From 85f07f223de9fbeb2b9d66db11f89091ac717926 Mon Sep 17 00:00:00 2001 From: Fabrice Bellard Date: Sun, 22 Jul 2001 14:37:44 +0000 Subject: [PATCH] merge Originally committed as revision 6 to svn://svn.ffmpeg.org/ffmpeg/trunk --- Makefile | 42 + README | 73 ++ doc/README.tech | 46 + doc/TODO | 63 ++ doc/ffmpeg.txt | 181 ++++ doc/ffserver.conf | 261 ++++++ ffmpeg.c | 2079 +++++++++++++++++++++++++++++++++++++++++++++ ffserver.c | 1577 ++++++++++++++++++++++++++++++++++ libav/Makefile | 22 + 9 files changed, 4344 insertions(+) create mode 100644 Makefile create mode 100644 README create mode 100644 doc/README.tech create mode 100644 doc/TODO create mode 100644 doc/ffmpeg.txt create mode 100644 doc/ffserver.conf create mode 100644 ffmpeg.c create mode 100644 ffserver.c create mode 100644 libav/Makefile diff --git a/Makefile b/Makefile new file mode 100644 index 0000000000..1650c89612 --- /dev/null +++ b/Makefile @@ -0,0 +1,42 @@ +# Main ffmpeg Makefile +# (c) 2000, 2001 Gerard Lantau +# +include config.mk + +CFLAGS= -O2 -Wall -g -I./libavcodec -I./libav +LDFLAGS= -g +ifdef CONFIG_GPROF +CFLAGS+=-p +LDFLAGS+=-p +endif + +PROG= ffmpeg ffserver + +all: lib $(PROG) + +lib: + make -C libavcodec all + make -C libav all + +ffmpeg: ffmpeg.o libav/libav.a libavcodec/libavcodec.a + gcc $(LDFLAGS) -o $@ $^ -lm + +ffserver: ffserver.o libav/libav.a libavcodec/libavcodec.a + gcc $(LDFLAGS) -o $@ $^ -lm + +%.o: %.c + gcc $(CFLAGS) -c -o $@ $< + +install: all + install -s -m 755 $(PROG) $(PREFIX)/bin + +clean: + make -C libavcodec clean + make -C libav clean + rm -f *.o *~ gmon.out TAGS $(PROG) + +distclean: clean + rm -f Rules.mk config.h + +TAGS: + etags *.[ch] libav/*.[ch] libavcodec/*.[ch] diff --git a/README b/README new file mode 100644 index 0000000000..4ae288ece9 --- /dev/null +++ b/README @@ -0,0 +1,73 @@ +FFmpeg - (c) 2000,2001 Gerard Lantau. + +1) Introduction +--------------- + +ffmpeg is a hyper fast realtime audio/video encoder, a streaming +server and a generic audio and video file converter. + +It can grab from a standard Video4Linux video source and convert it +into several file formats based on DCT/motion compensation +encoding. Sound is compressed in MPEG audio layer 2 or using an AC3 +compatible stream. + +What makes ffmpeg interesting ? + +- Innovative streaming technology : multiformat, real time encoding, + simple configuration. + +- Simple and efficient video encoder: outputs MPEG1, H263, Real + Video(tm), MPEG4, DIVX and MJPEG compatible bitstreams using the + same encoder core. + +- Real time encoding (25 fps in 352x288 on a K6 500) using the + video4linux API. + +- Generates I and P frames, which means it is far better than a MJPEG + encoder. + +- Hyper fast MPEG audio layer 2 compression (50 times faster than + realtime on a K6 500). + +- Hyper fast AC3 compatible encoder. + +- simple and very small portable C source code, easy to understand and + to modify. It be may the smallest decent MPEG encoder :-) + +- optional non real time higher quality encoding (different motion + estimators available). + +- Audio and Video decoders are in development. + +ffmpeg is made of two programs: + +* ffmpeg: soft VCR which encodes in real time to several formats. It + can also encode from any supported input file format to any input + supported format. + +* ffserver: high performance live broadcast streaming server based on + the ffmpeg core encoders. + +2) Documentation +---------------- + +* Read doc/ffmpeg.txt and doc/ffserver.txt to learn the basic features. + +* Read doc/TODO to know what are the know bugs and missing features. + +* Read doc/README.dev if you want to contribute or use the codec or + format libraries. + +3) Licensing: +------------ + +* See the file COPYING. ffmpeg and the associated library are licensed + under the GNU General Public License. I may change the license of + libavcodec and libav to LGPL if many people ask it (and if they + submit good patches!). + +* This code should be patent free since it is very simple. I took care + to use the same video encoder/decoder core for all formats to show + that they really ARE THE SAME except for the encoding huffman codes. + +Gerard Lantau (glantau@yahoo.fr). diff --git a/doc/README.tech b/doc/README.tech new file mode 100644 index 0000000000..e110b3a960 --- /dev/null +++ b/doc/README.tech @@ -0,0 +1,46 @@ +Technical notes: +--------------- + +Video: +----- + +- The decision intra/predicted macroblock is the algorithm suggested + by the mpeg 1 specification. + +- only Huffman based H263 is supported, mainly because of patent + issues. + +- MPEG4 is supported, as an extension of the H263 encoder. MPEG4 DC + prediction is used, but not AC prediction. Specific VLC are used for + intra pictures. The output format is compatible with Open DIVX + version 47. + +- MJPEG is supported, but in the current version the huffman tables + are not optimized. It could be interesting to add this feature for + the flash format. + +- To increase speed, only motion vectors (0,0) are tested for real + time compression. NEW: now motion compensation is done with several + methods : none, full, log, and phods. The code is mmx/sse optimized. + +- In high quality mode, full search is used for motion + vectors. Currently, only fcode = 1 is used for both H263/MPEG1. Half + pel vectors are used. + +I also plan to improve the bitrate control which is too simplistic. + +Audio: +----- + +- I rewrote the mpeg audio layer 2 compatible encoder from scratch. It + is one of the simplest encoder you can imagine (800 lines of C code + !). It is also one of the fastest because of its simplicity. There + are still some problems of overflow. A minimal psycho acoustic model + could be added. Currently, stereo is supported, but not joint + stereo. + +- I rewrote the AC3 audio encoder from scratch. It is fairly naive, + but the result are quiet interesting at 64 kbit/s. It includes + extensions for low sampling rates used in some Internet + formats. Differential and coupled stereo is not handled. Stereo + channels are simply handled as two mono channels. diff --git a/doc/TODO b/doc/TODO new file mode 100644 index 0000000000..09c5f2b6c2 --- /dev/null +++ b/doc/TODO @@ -0,0 +1,63 @@ +ffmpeg TODO list: +---------------- + +(in approximate decreasing priority order) + +Planned in next release: + +(DONE) - apply header fixes +(DONE) - mpeg audio decoder. +(DONE) - fix decode/encode codec string. +(DONE) - fix EINTR error if VIDIOCSYNC. +(DONE) - add CONFIG system. +(DONE) - merge mplayer mmx accel. +(DONE) - fix emms bug. +(DONE) - add I263 handling +(DONE) - add RV10 decoding. +(DONE) - add true pgm support. +(DONE) - msmpeg4 0x18 fix. +- add qscale out. +- add format autodetect with content (for example to distinguish + mpegvideo/mpegmux). +- add external alloc for libavcodec (avifile request). +- fix -sameq in grabbing +- find a solution to clear feed1.ffm if format change. +- new grab architecture : use avformat instead of audio: and video: + protocol. +- correct PTS handling to sync audio and video. +- fix 0 size picture in AVIs = skip picture + +BUGS: + +- fix audio/video synchro (including real player synchro bugs) + +- Improve the bit rate control for video codecs. + +- see ov511.o YUV problem (420 instead of 420P). + +- fix file caching pb in windows (add correct headers) + +- add low pass filter to suppress noise coming from cheap TV cards. + +- test/debug audio in flash format + +- sort out ASF streaming pbs. + +- Improve psycho acoustic model for AC3 & mpeg audio. + +FEATURES: + +- add MPEG4 in mpegmux support. + +- add RTP / multicast layer. + +- demux streams for CCTV : N streams in one stream. Add option to + generate multiple streams. + +- add disconnect user option in stat.html. + +- deny & allow + password in ffserver. + +- graphical user interface. + +- animated gif as output format diff --git a/doc/ffmpeg.txt b/doc/ffmpeg.txt new file mode 100644 index 0000000000..7352a662e2 --- /dev/null +++ b/doc/ffmpeg.txt @@ -0,0 +1,181 @@ +*************** FFMPEG soft VCR documentation ***************** + +0) Introduction +--------------- + + FFmpeg is a very fast video and audio encoder. It can grab from + files or from a live audio/video source. + + The command line interface is designed to be intuitive, in the sense + that ffmpeg tries to figure out all the paramters, when + possible. You have usually to give only the target bitrate you want. + + FFmpeg can also convert from any sample rate to any other, and + resize video on the fly with a high quality polyphase filter. + +1) Video and Audio grabbing +--------------------------- + +* ffmpeg can use a video4linux compatible video source and any Open + Sound System audio source: + + ffmpeg /tmp/out.mpg + + Note that you must activate the right video source and channel + before launching ffmpeg. You can use any TV viewer such as xawtv by + Gerd Knorr which I find very good. You must also set correctly the + audio recording levels with a standard mixer. + +2) Video and Audio file format convertion +----------------------------------------- + +* ffmpeg can use any supported file format and protocol as input : + +examples: + + ffmpeg -i /tmp/test%d.Y /tmp/out.mpg + +If will use the files: +/tmp/test0.Y, /tmp/test0.U, /tmp/test0.V, +/tmp/test1.Y, /tmp/test1.U, /tmp/test1.V, etc... + +The Y files use twice the resolution of the U and V files. They are +raw files, without header. They can be generated by all decent video +decoders. You must specify the size of the image with the '-s' option +if ffmpeg cannot guess it. + +* You can set several input files and output files: + + ffmpeg -i /tmp/a.wav -s 640x480 -i /tmp/a.yuv /tmp/a.mpg + +Convert the audio file a.wav and the raw yuv video file a.yuv to mpeg file a.mpg + +* you can also do audio and video convertions at the same time: + + ffmpeg -i /tmp/a.wav -ar 22050 /tmp/a.mp2 + +Convert the sample rate of a.wav to 22050 Hz and encode it to MPEG audio. + +* you can encode to several formats at the same time and define a + mapping from input stream to output streams: + + ffmpeg -i /tmp/a.wav -ab 64 /tmp/a.mp2 -ab 128 /tmp/b.mp2 -map 0:0 -map 0:0 + + convert a.wav to a.mp2 at 64 kbits and b.mp2 at 128 kbits. '-map + file:index' specify which input stream is used for each output + stream, in the order of the definition of output streams. + +NOTE: to see the supported input formats, use 'ffmpeg -formats'. + +2) Invocation +------------- + +* The generic syntax is : + + ffmpeg [[options][-i input_file]]... {[options] output_file}... + + If no input file is given, audio/video grabbing is done. + + As a general rule, options are applied to the next specified + file. For example, if you give the '-b 64' option, it sets the video + bitrate of the next file. Format option may be needed for raw input + files. + + By default, ffmpeg tries to convert as losslessly as possible: it + uses the same audio and video parameter fors the outputs as the one + specified for the inputs. + +* Main options are: + +-h show help +-formats show available formats, codecs and protocols +-L print the LICENSE +-i filename input file name +-y overwrite output files +-t duration set recording time in seconds +-f format set encoding format [guessed] +-title string set the title +-author string set the author +-copyright string set the copyright +-comment string set the comment + +* Video Options are: + +-s size set frame size [160x128] +-r fps set frame rate [25] +-b bitrate set the video bitrate in kbit/s [200] +-vn disable video recording [no] + +* Audio Options are: + +-ar freq set the audio sampling freq [44100] +-ab bitrate set the audio bitrate in kbit/s [64] +-ac channels set the number of audio channels [1] +-an disable audio recording [no] + +Advanced options are: + +-map file:stream set input stream mapping +-g gop_size set the group of picture size [12] +-intra use only intra frames [no] +-qscale q use fixed video quantiser scale (VBR) +-c comment set the comment string +-vd device set video4linux device name [/dev/video] +-vcodec codec force audio codec +-me method set motion estimation method +-ad device set audio device name [/dev/dsp] +-acodec codec force audio codec + +The output file can be "-" to output to a pipe. This is only possible +with mpeg1 and h263 formats. + +3) Protocols + + ffmpeg handles also many protocols specified with the URL syntax. + + Use 'ffmpeg -formats' to have a list of the supported protocols. + + The protocol 'http:' is currently used only to communicate with + ffserver (see the ffserver documentation). When ffmpeg will be a + video player it will also be used for streaming :-) + +4) File formats and codecs +-------------------------- + + Use 'ffmpeg -formats' to have a list of the supported output + formats. Only some formats are handled as input, but it will improve + in the next versions. + +5) Tips +------- + +- For streaming at very low bit rate application, use a low frame rate + and a small gop size. This is especially true for real video where + the Linux player does not seem to be very fast, so it can miss + frames. An example is: + + ffmpeg -g 3 -r 3 -t 10 -b 50 -s qcif -f rv10 /tmp/b.rm + +- The parameter 'q' which is displayed while encoding is the current + quantizer. The value of 1 indicates that a very good quality could + be achieved. The value of 31 indicates the worst quality. If q=31 + too often, it means that the encoder cannot compress enough to meet + your bit rate. You must either increase the bit rate, decrease the + frame rate or decrease the frame size. + +- If your computer is not fast enough, you can speed up the + compression at the expense of the compression ratio. You can use + '-me zero' to speed up motion estimation, and '-intra' to disable + completly motion estimation (you have only I frames, which means it + is about as good as JPEG compression). + +- To have very low bitrates in audio, reduce the sampling frequency + (down to 22050 kHz for mpeg audio, 22050 or 11025 for ac3). + +- To have a constant quality (but a variable bitrate), use the option + '-qscale n' when 'n' is between 1 (excellent quality) and 31 (worst + quality). + +- When converting video files, you can use the '-sameq' option which + uses in the encoder the same quality factor than in the decoder. It + allows to be almost lossless in encoding. diff --git a/doc/ffserver.conf b/doc/ffserver.conf new file mode 100644 index 0000000000..311f48b817 --- /dev/null +++ b/doc/ffserver.conf @@ -0,0 +1,261 @@ +# Port on which the server is listening. You must select a different +# port from your standard http web server if it is running on the same +# computer. + +Port 8090 + +# Address on which the server is bound. Only useful if you have +# several network interfaces. + +BindAddress 0.0.0.0 + +# Number of simultaneous requests that can be handled. Since FFServer +# is very fast, this limit is determined mainly by your Internet +# connection speed. + +MaxClients 1000 + +# Access Log file (uses standard Apache log file format) +# '-' is the standard output + +CustomLog - + +################################################################## +# Definition of the live feeds. Each live feed contains one video +# and/or audio sequence coming from an ffmpeg encoder or another +# ffserver. This sequence may be encoded simultaneously with several +# codecs at several resolutions. + + + +# You must use 'ffmpeg' to send a live feed to ffserver. In this +# example, you can type: +# +# ffmpeg http://localhost:8090/feed1.ffm + +# ffserver can also do time shifting. It means that it can stream any +# previously recorded live stream. The request should contain: +# "http://xxxx?date=[YYYY-MM-DDT][[HH:]MM:]SS[.m...]".You must specify +# a path where the feed is stored on disk. You also specify the +# maximum size of the feed (100M bytes here). Default: +# File=/tmp/feed_name.ffm FileMaxSize=5M + +File /tmp/feed1.ffm +FileMaxSize 50M + + + +################################################################## +# Now you can define each stream which will be generated from the +# original audio and video stream. Each format has a filename (here +# 'test128.mpg'). FFServer will send this stream when answering a +# request containing this filename. + + + +# coming from live feed 'feed1' +Feed feed1.ffm + +# Format of the stream : you can choose among: +# mpeg : MPEG1 multiplexed video and audio +# mpegvideo : only MPEG1 video +# mp2 : MPEG audio layer 2 +# mp3 : MPEG audio layer 3 (currently sent as layer 2) +# rm : Real Networks compatible stream. Multiplexed audio and video. +# ra : Real Networks compatible stream. Audio only. +# mpjpeg : Multipart JPEG (works with Netscape without any plugin) +# jpeg : Generate a single JPEG image. +# asf : ASF compatible stream (Windows Media Player format). Not finished yet. +# swf : Macromedia flash(tm) compatible stream +# avi : AVI format (open divx video, mpeg audio sound) +# master : special ffmpeg stream used to duplicate a server + +Format mpeg + +# Bitrate for the audio stream. Codecs usually support only a few different bitrates. + +AudioBitRate 32 + +# Number of audio channels : 1 = mono, 2 = stereo + +AudioChannels 1 + +# Sampling frequency for audio. When using low bitrates, you should +# lower this frequency to 22050 or 11025. The supported frequencies +# depend on the selected audio codec. + +AudioSampleRate 44100 + +# Bitrate for the video stream. +VideoBitRate 64 + +# Number of frames per second +VideoFrameRate 3 + +# Size of the video frame : WxH (default: 160x128) +# W : width, H : height +# The following abbreviation are defined : sqcif, qcif, cif, 4cif +VideoSize 160x128 + +# transmit only intra frames (useful for low bitrates) +VideoIntraOnly + +# If non intra only, an intra frame is transmitted every VideoGopSize +# frames Video synchronization can only begin at an I frames. +#VideoGopSize 12 + +# Suppress audio +#NoAudio + +# Suppress video +#NoVideo + + + +# second mpeg stream with high frame rate + + +Feed feed1.ffm +Format mpegvideo +VideoBitRate 128 +VideoFrameRate 25 +#VideoSize 352x240 +VideoGopSize 25 + + +################################################################## +# A stream coming from a file : you only need to set the input +# filename and optionnally a new format. Supported conversions: +# avi -> asf +# + + + +#File "/tmp/file.avi" +File "tmp/file.avi" +# avi must be converted to asf to be streamed +Format asf + + + +# another file streaming + + +File "tmp/file.mp3" + + + +################################################################## +# Another stream : Real with audio only at 32 kbits + + + +Feed feed1.ffm +Format rm +AudioBitRate 32 +NoVideo + + + +################################################################## +# Another stream : Real with audio and video at 64 kbits + + + +Feed feed1.ffm +Format rm + +AudioBitRate 32 +VideoBitRate 20 +VideoFrameRate 2 +VideoIntraOnly + + + +################################################################## +# Another stream : Mpeg audio layer 2 at 64 kbits. + + + +Feed feed1.ffm +Format mp2 +AudioBitRate 64 +AudioSampleRate 44100 + + + + + +Feed feed1.ffm +Format mp2 +AudioBitRate 32 +AudioSampleRate 16000 + + + +################################################################## +# Another stream : Multipart JPEG + + + +Feed feed1.ffm +Format mpjpeg + +VideoFrameRate 2 +VideoIntraOnly + + + +################################################################## +# Another stream : Multipart JPEG + + + +Feed feed1.ffm +Format jpeg + +# the parameters are choose here to take the same output as the +# Multipart JPEG one. +VideoFrameRate 2 +VideoIntraOnly +#VideoSize 352x240 + + + +################################################################## +# Another stream : Flash + + + +Feed feed1.ffm +Format swf + +VideoFrameRate 2 +VideoIntraOnly + + + + +################################################################## +# Another stream : ASF compatible + + + +Feed feed1.ffm +Format asf + +AudioBitRate 64 +AudioSampleRate 44100 +VideoFrameRate 2 +VideoIntraOnly + + + +################################################################## +# Special stream : server status + + + +Format status + + diff --git a/ffmpeg.c b/ffmpeg.c new file mode 100644 index 0000000000..d5bc917a42 --- /dev/null +++ b/ffmpeg.c @@ -0,0 +1,2079 @@ +/* + * FFmpeg main + * Copyright (c) 2000,2001 Gerard Lantau + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "avformat.h" + +typedef struct { + const char *name; + int flags; +#define HAS_ARG 0x0001 +#define OPT_BOOL 0x0002 +#define OPT_EXPERT 0x0004 +#define OPT_STRING 0x0008 + union { + void (*func_arg)(); + int *int_arg; + char **str_arg; + } u; + const char *help; + const char *argname; +} OptionDef; + +/* select an input stream for an output stream */ +typedef struct AVStreamMap { + int file_index; + int stream_index; +} AVStreamMap; + +extern const OptionDef options[]; + +void show_help(void); + +#define MAX_FILES 20 + +static AVFormatContext *input_files[MAX_FILES]; +static int nb_input_files = 0; + +static AVFormatContext *output_files[MAX_FILES]; +static int nb_output_files = 0; + +static AVStreamMap stream_maps[MAX_FILES]; +static int nb_stream_maps; + +static AVFormat *file_format; +static int frame_width = 160; +static int frame_height = 128; +static int frame_rate = 25 * FRAME_RATE_BASE; +static int video_bit_rate = 200000; +static int video_qscale = 0; +static int video_disable = 0; +static int video_codec_id = CODEC_ID_NONE; +static int same_quality = 0; + +static int gop_size = 12; +static int intra_only = 0; +static int audio_sample_rate = 44100; +static int audio_bit_rate = 64000; +static int audio_disable = 0; +static int audio_channels = 1; +static int audio_codec_id = CODEC_ID_NONE; + +static INT64 recording_time = 0; +static int file_overwrite = 0; +static char *str_title = NULL; +static char *str_author = NULL; +static char *str_copyright = NULL; +static char *str_comment = NULL; + +typedef struct AVOutputStream { + int file_index; /* file index */ + int index; /* stream index in the output file */ + int source_index; /* AVInputStream index */ + AVStream *st; /* stream in the output file */ + int encoding_needed; /* true if encoding needed for this stream */ + + int fifo_packet_rptr; /* read index in the corresponding + avinputstream packet fifo */ + /* video only */ + AVPicture pict_tmp; /* temporary image for resizing */ + int video_resample; + ImgReSampleContext *img_resample_ctx; /* for image resampling */ + + /* audio only */ + int audio_resample; + ReSampleContext *resample; /* for audio resampling */ + FifoBuffer fifo; /* for compression: one audio fifo per codec */ +} AVOutputStream; + +typedef struct AVInputStream { + int file_index; + int index; + AVStream *st; + int discard; /* true if stream data should be discarded */ + int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */ + INT64 pts; /* current pts */ + int frame_number; /* current frame */ + INT64 sample_index; /* current sample */ +} AVInputStream; + +typedef struct AVInputFile { + int eof_reached; /* true if eof reached */ + int ist_index; /* index of first stream in ist_table */ + int buffer_size; /* current total buffer size */ + int buffer_size_max; /* buffer size at which we consider we can stop + buffering */ +} AVInputFile; + +/* init terminal so that we can grab keys */ +static struct termios oldtty; + +static void term_exit(void) +{ + tcsetattr (0, TCSANOW, &oldtty); +} + +static void term_init(void) +{ + struct termios tty; + + tcgetattr (0, &tty); + oldtty = tty; + + tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP + |INLCR|IGNCR|ICRNL|IXON); + tty.c_oflag |= OPOST; + tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); + tty.c_cflag &= ~(CSIZE|PARENB); + tty.c_cflag |= CS8; + tty.c_cc[VMIN] = 1; + tty.c_cc[VTIME] = 0; + + tcsetattr (0, TCSANOW, &tty); + + atexit(term_exit); +} + +/* read a key without blocking */ +static int read_key(void) +{ + struct timeval tv; + int n; + unsigned char ch; + fd_set rfds; + + FD_ZERO(&rfds); + FD_SET(0, &rfds); + tv.tv_sec = 0; + tv.tv_usec = 0; + n = select(1, &rfds, NULL, NULL, &tv); + if (n > 0) { + if (read(0, &ch, 1) == 1) + return ch; + } + return -1; +} + +#define AUDIO_FIFO_SIZE 8192 + +/* main loop for grabbing */ +int av_grab(AVFormatContext *s) +{ + UINT8 audio_buf[AUDIO_FIFO_SIZE/2]; + UINT8 audio_buf1[AUDIO_FIFO_SIZE/2]; + UINT8 audio_out[AUDIO_FIFO_SIZE/2]; + UINT8 video_buffer[128*1024]; + char buf[256]; + short *samples; + URLContext *audio_handle = NULL, *video_handle = NULL; + int ret; + AVCodecContext *enc, *first_video_enc = NULL; + int frame_size, frame_bytes; + int use_audio, use_video; + int frame_rate, sample_rate, channels; + int width, height, frame_number, i, pix_fmt = 0; + AVOutputStream *ost_table[s->nb_streams], *ost; + UINT8 *picture_in_buf = NULL, *picture_420p = NULL; + int audio_fifo_size = 0, picture_size = 0; + INT64 time_start; + + /* init output stream info */ + for(i=0;inb_streams;i++) + ost_table[i] = NULL; + + /* output stream init */ + for(i=0;inb_streams;i++) { + ost = av_mallocz(sizeof(AVOutputStream)); + if (!ost) + goto fail; + ost->index = i; + ost->st = s->streams[i]; + ost_table[i] = ost; + } + + use_audio = 0; + use_video = 0; + frame_rate = 0; + sample_rate = 0; + frame_size = 0; + channels = 1; + width = 0; + height = 0; + frame_number = 0; + + for(i=0;inb_streams;i++) { + AVCodec *codec; + + ost = ost_table[i]; + enc = &ost->st->codec; + codec = avcodec_find_encoder(enc->codec_id); + if (!codec) { + fprintf(stderr, "Unknown codec\n"); + return -1; + } + if (avcodec_open(enc, codec) < 0) { + fprintf(stderr, "Incorrect encode parameters\n"); + return -1; + } + switch(enc->codec_type) { + case CODEC_TYPE_AUDIO: + use_audio = 1; + if (enc->sample_rate > sample_rate) + sample_rate = enc->sample_rate; + if (enc->frame_size > frame_size) + frame_size = enc->frame_size; + if (enc->channels > channels) + channels = enc->channels; + break; + case CODEC_TYPE_VIDEO: + if (!first_video_enc) + first_video_enc = enc; + use_video = 1; + if (enc->frame_rate > frame_rate) + frame_rate = enc->frame_rate; + if (enc->width > width) + width = enc->width; + if (enc->height > height) + height = enc->height; + break; + } + } + + /* audio */ + samples = NULL; + if (use_audio) { + snprintf(buf, sizeof(buf), "audio:%d,%d", sample_rate, channels); + ret = url_open(&audio_handle, buf, URL_RDONLY); + if (ret < 0) { + fprintf(stderr, "Could not open audio device: disabling audio capture\n"); + use_audio = 0; + } else { + URLFormat f; + /* read back exact grab parameters */ + if (url_getformat(audio_handle, &f) < 0) { + fprintf(stderr, "could not read back video grab parameters\n"); + goto fail; + } + sample_rate = f.sample_rate; + channels = f.channels; + audio_fifo_size = ((AUDIO_FIFO_SIZE / 2) / audio_handle->packet_size) * + audio_handle->packet_size; + fprintf(stderr, "Audio sampling: %d Hz, %s\n", + sample_rate, channels == 2 ? "stereo" : "mono"); + } + } + + /* video */ + if (use_video) { + snprintf(buf, sizeof(buf), "video:%d,%d,%f", + width, height, (float)frame_rate / FRAME_RATE_BASE); + + ret = url_open(&video_handle, buf, URL_RDONLY); + if (ret < 0) { + fprintf(stderr,"Could not init video 4 linux capture: disabling video capture\n"); + use_video = 0; + } else { + URLFormat f; + const char *pix_fmt_str; + /* read back exact grab parameters */ + if (url_getformat(video_handle, &f) < 0) { + fprintf(stderr, "could not read back video grab parameters\n"); + goto fail; + } + width = f.width; + height = f.height; + pix_fmt = f.pix_fmt; + switch(pix_fmt) { + case PIX_FMT_YUV420P: + pix_fmt_str = "420P"; + break; + case PIX_FMT_YUV422: + pix_fmt_str = "422"; + break; + case PIX_FMT_RGB24: + pix_fmt_str = "RGB24"; + break; + case PIX_FMT_BGR24: + pix_fmt_str = "BGR24"; + break; + default: + pix_fmt_str = "???"; + break; + } + picture_size = video_handle->packet_size; + picture_in_buf = malloc(picture_size); + if (!picture_in_buf) + goto fail; + /* allocate a temporary picture if not grabbing in 420P format */ + if (pix_fmt != PIX_FMT_YUV420P) { + picture_420p = malloc((width * height * 3) / 2); + } + fprintf(stderr, "Video sampling: %dx%d, %s format, %0.2f fps\n", + width, height, pix_fmt_str, (float)frame_rate / FRAME_RATE_BASE); + } + } + + if (!use_video && !use_audio) { + fprintf(stderr,"Could not open grab devices : exiting\n"); + exit(1); + } + + /* init built in conversion functions */ + for(i=0;inb_streams;i++) { + ost = ost_table[i]; + enc = &ost->st->codec; + switch(enc->codec_type) { + case CODEC_TYPE_AUDIO: + ost->audio_resample = 0; + if ((enc->channels != channels || + enc->sample_rate != sample_rate)) { + ost->audio_resample = 1; + ost->resample = audio_resample_init(enc->channels, channels, + enc->sample_rate, sample_rate); + } + if (fifo_init(&ost->fifo, (2 * audio_fifo_size * enc->sample_rate) / + sample_rate)) + goto fail; + break; + case CODEC_TYPE_VIDEO: + ost->video_resample = 0; + if (enc->width != width || + enc->height != height) { + UINT8 *buf; + ost->video_resample = 1; + buf = malloc((enc->width * enc->height * 3) / 2); + if (!buf) + goto fail; + ost->pict_tmp.data[0] = buf; + ost->pict_tmp.data[1] = buf + enc->width * height; + ost->pict_tmp.data[2] = ost->pict_tmp.data[1] + (enc->width * height) / 4; + ost->pict_tmp.linesize[0] = enc->width; + ost->pict_tmp.linesize[1] = enc->width / 2; + ost->pict_tmp.linesize[2] = enc->width / 2; + ost->img_resample_ctx = img_resample_init( + ost->st->codec.width, ost->st->codec.height, + width, height); + } + } + } + + fprintf(stderr, "Press [q] to stop encoding\n"); + + s->format->write_header(s); + time_start = gettime(); + term_init(); + + for(;;) { + /* if 'q' pressed, exits */ + if (read_key() == 'q') + break; + + /* read & compress audio frames */ + if (use_audio) { + int ret, nb_samples, nb_samples_out; + UINT8 *buftmp; + + for(;;) { + ret = url_read(audio_handle, audio_buf, audio_fifo_size); + if (ret <= 0) + break; + /* fill each codec fifo by doing the right sample + rate conversion. This is not optimal because we + do too much work, but it is easy to do */ + nb_samples = ret / (channels * 2); + for(i=0;inb_streams;i++) { + ost = ost_table[i]; + enc = &ost->st->codec; + if (enc->codec_type == CODEC_TYPE_AUDIO) { + /* rate & stereo convertion */ + if (!ost->audio_resample) { + buftmp = audio_buf; + nb_samples_out = nb_samples; + } else { + buftmp = audio_buf1; + nb_samples_out = audio_resample(ost->resample, + (short *)buftmp, (short *)audio_buf, + nb_samples); + } + fifo_write(&ost->fifo, buftmp, nb_samples_out * enc->channels * 2, + &ost->fifo.wptr); + } + } + + /* compress as many frame as possible with each audio codec */ + for(i=0;inb_streams;i++) { + ost = ost_table[i]; + enc = &ost->st->codec; + if (enc->codec_type == CODEC_TYPE_AUDIO) { + frame_bytes = enc->frame_size * 2 * enc->channels; + + while (fifo_read(&ost->fifo, audio_buf, + frame_bytes, &ost->fifo.rptr) == 0) { + ret = avcodec_encode_audio(enc, + audio_out, sizeof(audio_out), + (short *)audio_buf); + s->format->write_packet(s, ost->index, audio_out, ret); + } + } + } + } + } + + if (use_video) { + AVPicture *picture1; + AVPicture picture; + UINT8 *pict_buffer; + + ret = url_read(video_handle, picture_in_buf, picture_size); + if (ret < 0) + break; + if (pix_fmt != PIX_FMT_YUV420P) { + pict_buffer = picture_420p; + img_convert_to_yuv420(pict_buffer, picture_in_buf, pix_fmt, width, height); + } else { + pict_buffer = picture_in_buf; + } + /* build a picture storage */ + picture.data[0] = pict_buffer; + picture.data[1] = picture.data[0] + width * height; + picture.data[2] = picture.data[1] + (width * height) / 4; + picture.linesize[0] = width; + picture.linesize[1] = width / 2; + picture.linesize[2] = width / 2; + + for(i=0;inb_streams;i++) { + ost = ost_table[i]; + enc = &ost->st->codec; + if (enc->codec_type == CODEC_TYPE_VIDEO) { + int n1, n2, nb; + + /* feed each codec with its requested frame rate */ + n1 = ((INT64)frame_number * enc->frame_rate) / frame_rate; + n2 = (((INT64)frame_number + 1) * enc->frame_rate) / frame_rate; + nb = n2 - n1; + if (nb > 0) { + /* resize the picture if needed */ + if (ost->video_resample) { + picture1 = &ost->pict_tmp; + img_resample(ost->img_resample_ctx, + picture1, &picture); + } else { + picture1 = &picture; + } + ret = avcodec_encode_video(enc, video_buffer, + sizeof(video_buffer), + picture1); + s->format->write_packet(s, ost->index, video_buffer, ret); + } + } + } + frame_number++; + } + + /* write report */ + { + char buf[1024]; + INT64 total_size; + float ti, bitrate; + static float last_ti; + INT64 ti1; + + total_size = url_ftell(&s->pb); + ti1 = gettime() - time_start; + /* check elapsed time */ + if (recording_time && ti1 >= recording_time) + break; + + ti = ti1 / 1000000.0; + if (ti < 0.1) + ti = 0.1; + /* dispaly twice per second */ + if ((ti - last_ti) >= 0.5) { + last_ti = ti; + bitrate = (int)((total_size * 8) / ti / 1000.0); + + buf[0] = '\0'; + if (use_video) { + sprintf(buf + strlen(buf), "frame=%5d fps=%4.1f q=%2d ", + frame_number, (float)frame_number / ti, first_video_enc->quality); + } + + sprintf(buf + strlen(buf), "size=%8LdkB time=%0.1f bitrate=%6.1fkbits/s", + total_size / 1024, ti, bitrate); + fprintf(stderr, "%s \r", buf); + fflush(stderr); + } + } + } + term_exit(); + + for(i=0;inb_streams;i++) { + ost = ost_table[i]; + enc = &ost->st->codec; + avcodec_close(enc); + } + s->format->write_trailer(s); + + if (audio_handle) + url_close(audio_handle); + + if (video_handle) + url_close(video_handle); + + /* write report */ + { + float ti, bitrate; + INT64 total_size; + + total_size = url_ftell(&s->pb); + + ti = (gettime() - time_start) / 1000000.0; + if (ti < 0.1) + ti = 0.1; + bitrate = (int)((total_size * 8) / ti / 1000.0); + + fprintf(stderr, "\033[K\nTotal time = %0.1f s, %Ld KBytes, %0.1f kbits/s\n", + ti, total_size / 1024, bitrate); + if (use_video) { + fprintf(stderr, "Total frames = %d\n", frame_number); + } + } + + ret = 0; + fail1: + if (picture_in_buf) + free(picture_in_buf); + if (picture_420p) + free(picture_420p); + for(i=0;inb_streams;i++) { + ost = ost_table[i]; + if (ost) { + if (ost->fifo.buffer) + fifo_free(&ost->fifo); + if (ost->pict_tmp.data[0]) + free(ost->pict_tmp.data[0]); + if (ost->video_resample) + img_resample_close(ost->img_resample_ctx); + if (ost->audio_resample) + audio_resample_close(ost->resample); + free(ost); + } + } + return ret; + fail: + ret = -ENOMEM; + goto fail1; +} + +int read_ffserver_streams(AVFormatContext *s, const char *filename) +{ + int i; + AVFormatContext *ic; + + ic = av_open_input_file(filename, FFM_PACKET_SIZE); + if (!ic) + return -EIO; + /* copy stream format */ + s->nb_streams = ic->nb_streams; + for(i=0;inb_streams;i++) { + AVStream *st; + st = av_mallocz(sizeof(AVFormatContext)); + memcpy(st, ic->streams[i], sizeof(AVStream)); + s->streams[i] = st; + } + + av_close_input_file(ic); + return 0; +} + +#define MAX_AUDIO_PACKET_SIZE 16384 + +static void do_audio_out(AVFormatContext *s, + AVOutputStream *ost, + AVInputStream *ist, + unsigned char *buf, int size) +{ + UINT8 *buftmp; + UINT8 audio_buf[2*MAX_AUDIO_PACKET_SIZE]; /* XXX: allocate it */ + UINT8 audio_out[MAX_AUDIO_PACKET_SIZE]; /* XXX: allocate it */ + int size_out, frame_bytes, ret; + AVCodecContext *enc; + + enc = &ost->st->codec; + + if (ost->audio_resample) { + buftmp = audio_buf; + size_out = audio_resample(ost->resample, + (short *)buftmp, (short *)buf, + size / (ist->st->codec.channels * 2)); + size_out = size_out * enc->channels * 2; + } else { + buftmp = buf; + size_out = size; + } + + /* now encode as many frames as possible */ + if (enc->codec_id != CODEC_ID_PCM) { + /* output resampled raw samples */ + fifo_write(&ost->fifo, buftmp, size_out, + &ost->fifo.wptr); + + frame_bytes = enc->frame_size * 2 * enc->channels; + + while (fifo_read(&ost->fifo, audio_buf, frame_bytes, + &ost->fifo.rptr) == 0) { + ret = avcodec_encode_audio(enc, + audio_out, sizeof(audio_out), (short *)audio_buf); + s->format->write_packet(s, ost->index, audio_out, ret); + } + } else { + /* XXX: handle endianness */ + s->format->write_packet(s, ost->index, buftmp, size_out); + } +} + +/* write a picture to a raw mux */ +static void write_picture(AVFormatContext *s, int index, AVPicture *picture, int w, int h) +{ + UINT8 *buf, *src, *dest; + int size, j, i; + /* XXX: not efficient, should add test if we can take + directly the AVPicture */ + size = (w * h) * 3 / 2; + buf = malloc(size); + dest = buf; + for(i=0;i<3;i++) { + if (i == 1) { + w >>= 1; + h >>= 1; + } + src = picture->data[i]; + for(j=0;jlinesize[i]; + } + } + s->format->write_packet(s, index, buf, size); + free(buf); +} + + +static void do_video_out(AVFormatContext *s, + AVOutputStream *ost, + AVInputStream *ist, + AVPicture *pict) +{ + int n1, n2, nb, i, ret, frame_number; + AVPicture *picture; + UINT8 video_buffer[128*1024]; + AVCodecContext *enc; + + enc = &ost->st->codec; + + frame_number = ist->frame_number; + /* first drop frame if needed */ + n1 = ((INT64)frame_number * enc->frame_rate) / ist->st->codec.frame_rate; + n2 = (((INT64)frame_number + 1) * enc->frame_rate) / ist->st->codec.frame_rate; + nb = n2 - n1; + if (nb <= 0) + return; + + if (ost->video_resample) { + picture = &ost->pict_tmp; + img_resample(ost->img_resample_ctx, picture, pict); + } else { + picture = pict; + } + + /* duplicates frame if needed */ + /* XXX: pb because no interleaving */ + for(i=0;icodec_id != CODEC_ID_RAWVIDEO) { + /* handles sameq here. This is not correct because it may + not be a global option */ + if (same_quality) { + ost->st->codec.quality = ist->st->codec.quality; + } + ret = avcodec_encode_video(&ost->st->codec, + video_buffer, sizeof(video_buffer), + picture); + s->format->write_packet(s, ost->index, video_buffer, ret); + } else { + write_picture(s, ost->index, picture, enc->width, enc->height); + } + } +} + +//#define HEX_DUMP + +#ifdef HEX_DUMP +static void hex_dump(UINT8 *buf, int size) +{ + int len, i, j, c; + + for(i=0;i 16) + len = 16; + printf("%08x ", i); + for(j=0;j<16;j++) { + if (j < len) + printf(" %02x", buf[i+j]); + else + printf(" "); + } + printf(" "); + for(j=0;j '~') + c = '.'; + printf("%c", c); + } + printf("\n"); + } +} +#endif + +/* + * The following code is the main loop of the file converter + */ +static int av_encode(AVFormatContext **output_files, + int nb_output_files, + AVFormatContext **input_files, + int nb_input_files, + AVStreamMap *stream_maps, int nb_stream_maps) +{ + int ret, i, j, k, n, nb_istreams, nb_ostreams = 0; + AVFormatContext *is, *os; + AVCodecContext *codec, *icodec; + AVOutputStream *ost, **ost_table = NULL; + AVInputStream *ist, **ist_table = NULL; + INT64 min_pts, start_time; + AVInputFile file_table[nb_input_files]; + + memset(file_table, 0, sizeof(file_table)); + + /* input stream init */ + j = 0; + for(i=0;inb_streams; + } + nb_istreams = j; + + ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *)); + if (!ist_table) + return -ENOMEM; + + for(i=0;inb_streams;k++) { + ist = ist_table[j++]; + ist->st = is->streams[k]; + ist->file_index = i; + ist->index = k; + ist->discard = 1; /* the stream is discarded by default + (changed later) */ + } + } + + /* output stream init */ + nb_ostreams = 0; + for(i=0;inb_streams; + } + if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) { + fprintf(stderr, "Number of stream maps must match number of output streams\n"); + exit(1); + } + + ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams); + if (!ost_table) + goto fail; + for(i=0;inb_streams;i++) { + int found; + ost = ost_table[n++]; + ost->file_index = k; + ost->index = i; + ost->st = os->streams[i]; + if (nb_stream_maps > 0) { + ost->source_index = file_table[stream_maps[n-1].file_index].ist_index + + stream_maps[n-1].stream_index; + } else { + /* get corresponding input stream index : we select the first one with the right type */ + found = 0; + for(j=0;jdiscard && + ist->st->codec.codec_type == ost->st->codec.codec_type) { + ost->source_index = j; + found = 1; + } + } + + if (!found) { + /* try again and reuse existing stream */ + for(j=0;jst->codec.codec_type == ost->st->codec.codec_type) { + ost->source_index = j; + found = 1; + } + } + if (!found) { + fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n", + ost->file_index, ost->index); + exit(1); + } + } + } + ist = ist_table[ost->source_index]; + ist->discard = 0; + } + } + + /* dump the stream mapping */ + fprintf(stderr, "Stream mapping:\n"); + for(i=0;i #%d.%d\n", + ist_table[ost->source_index]->file_index, + ist_table[ost->source_index]->index, + ost->file_index, + ost->index); + } + + /* for each output stream, we compute the right encoding parameters */ + for(i=0;isource_index]; + + codec = &ost->st->codec; + icodec = &ist->st->codec; + + switch(codec->codec_type) { + case CODEC_TYPE_AUDIO: + /* check if same codec with same parameters. If so, no + reencoding is needed */ + if (codec->codec_id == icodec->codec_id && + codec->bit_rate == icodec->bit_rate && + codec->sample_rate == icodec->sample_rate && + codec->channels == icodec->channels) { + /* no reencoding */ + } else { + if (fifo_init(&ost->fifo, 2 * MAX_AUDIO_PACKET_SIZE)) + goto fail; + + if (codec->channels == icodec->channels && + codec->sample_rate == icodec->sample_rate) { + ost->audio_resample = 0; + } else { + ost->audio_resample = 1; + ost->resample = audio_resample_init(codec->channels, icodec->channels, + codec->sample_rate, + icodec->sample_rate); + } + ist->decoding_needed = 1; + ost->encoding_needed = 1; + } + break; + case CODEC_TYPE_VIDEO: + /* check if same codec with same parameters. If so, no + reencoding is needed */ + if (codec->codec_id == icodec->codec_id && + codec->bit_rate == icodec->bit_rate && + codec->frame_rate == icodec->frame_rate && + codec->width == icodec->width && + codec->height == icodec->height) { + /* no reencoding */ + } else { + if (codec->width == icodec->width && + codec->height == icodec->height) { + ost->video_resample = 0; + } else { + UINT8 *buf; + ost->video_resample = 1; + buf = malloc((codec->width * codec->height * 3) / 2); + if (!buf) + goto fail; + ost->pict_tmp.data[0] = buf; + ost->pict_tmp.data[1] = ost->pict_tmp.data[0] + (codec->width * codec->height); + ost->pict_tmp.data[2] = ost->pict_tmp.data[1] + (codec->width * codec->height) / 4; + ost->pict_tmp.linesize[0] = codec->width; + ost->pict_tmp.linesize[1] = codec->width / 2; + ost->pict_tmp.linesize[2] = codec->width / 2; + + ost->img_resample_ctx = img_resample_init( + ost->st->codec.width, ost->st->codec.height, + ist->st->codec.width, ist->st->codec.height); + } + ost->encoding_needed = 1; + ist->decoding_needed = 1; + } + break; + } + } + + /* open each encoder */ + for(i=0;iencoding_needed) { + AVCodec *codec; + codec = avcodec_find_encoder(ost->st->codec.codec_id); + if (!codec) { + fprintf(stderr, "Unsupported codec for output stream #%d.%d\n", + ost->file_index, ost->index); + exit(1); + } + if (avcodec_open(&ost->st->codec, codec) < 0) { + fprintf(stderr, "Error while opening codec for stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height\n", + ost->file_index, ost->index); + exit(1); + } + } + } + + /* open each decoder */ + for(i=0;idecoding_needed) { + AVCodec *codec; + codec = avcodec_find_decoder(ist->st->codec.codec_id); + if (!codec) { + fprintf(stderr, "Unsupported codec for input stream #%d.%d\n", + ist->file_index, ist->index); + exit(1); + } + if (avcodec_open(&ist->st->codec, codec) < 0) { + fprintf(stderr, "Error while opening codec for input stream #%d.%d\n", + ist->file_index, ist->index); + exit(1); + } + } + } + + /* init pts */ + for(i=0;ipts = 0; + ist->frame_number = 0; + } + + /* compute buffer size max (should use a complete heuristic) */ + for(i=0;iformat->write_header(os); + } + + start_time = gettime(); + min_pts = 0; + for(;;) { + int file_index, ist_index; + AVPacket pkt; + UINT8 *ptr; + int len; + UINT8 *data_buf; + int data_size, got_picture; + AVPicture picture; + short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2]; + + /* select the input file with the smallest pts */ + redo: + file_index = -1; + min_pts = (1ULL << 63) - 1; + for(i=0;idiscard && !file_table[ist->file_index].eof_reached && ist->pts < min_pts) { + min_pts = ist->pts; + file_index = ist->file_index; + } + } + /* if none, if is finished */ + if (file_index < 0) + break; + /* finish if recording time exhausted */ + if (recording_time > 0 && min_pts >= recording_time) + break; + /* read a packet from it and output it in the fifo */ + + is = input_files[file_index]; + if (av_read_packet(is, &pkt) < 0) { + file_table[file_index].eof_reached = 1; + continue; + } + ist_index = file_table[file_index].ist_index + pkt.stream_index; + ist = ist_table[ist_index]; + if (ist->discard) { + continue; + } + +#ifdef HEX_DUMP + printf("stream #%d, size=%d:\n", pkt.stream_index, pkt.size); + hex_dump(pkt.data, pkt.size); +#endif + + // printf("read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size); + + len = pkt.size; + ptr = pkt.data; + while (len > 0) { + + /* decode the packet if needed */ + data_buf = NULL; /* fail safe */ + data_size = 0; + if (ist->decoding_needed) { + switch(ist->st->codec.codec_type) { + case CODEC_TYPE_AUDIO: + if (ist->st->codec.codec_id == CODEC_ID_PCM) { + /* no need to call a codec */ + data_buf = ptr; + data_size = len; + ret = len; + } else { + ret = avcodec_decode_audio(&ist->st->codec, samples, &data_size, + ptr, len); + if (ret < 0) + goto fail_decode; + if (data_size == 0) { + /* no audio frame */ + ptr += ret; + len -= ret; + continue; + } + data_buf = (UINT8 *)samples; + } + break; + case CODEC_TYPE_VIDEO: + if (ist->st->codec.codec_id == CODEC_ID_RAWVIDEO) { + int size; + size = (ist->st->codec.width * ist->st->codec.height); + + picture.data[0] = ptr; + picture.data[1] = picture.data[0] + size; + picture.data[2] = picture.data[1] + size / 4; + picture.linesize[0] = ist->st->codec.width; + picture.linesize[1] = ist->st->codec.width / 2; + picture.linesize[2] = ist->st->codec.width / 2; + ret = len; + } else { + data_size = (ist->st->codec.width * ist->st->codec.height * 3) / 2; + ret = avcodec_decode_video(&ist->st->codec, + &picture, &got_picture, ptr, len); + if (ret < 0) { + fail_decode: + fprintf(stderr, "Error while decoding stream #%d.%d\n", + ist->file_index, ist->index); + av_free_packet(&pkt); + goto redo; + } + if (!got_picture) { + /* no picture yet */ + ptr += ret; + len -= ret; + continue; + } + } + break; + default: + goto fail_decode; + } + } else { + data_buf = ptr; + data_size = len; + ret = len; + } + /* update pts */ + switch(ist->st->codec.codec_type) { + case CODEC_TYPE_AUDIO: + ist->pts = (INT64)1000000 * ist->sample_index / ist->st->codec.sample_rate; + ist->sample_index += data_size / (2 * ist->st->codec.channels); + break; + case CODEC_TYPE_VIDEO: + ist->frame_number++; + ist->pts = ((INT64)ist->frame_number * 1000000 * FRAME_RATE_BASE) / + ist->st->codec.frame_rate; + break; + } + ptr += ret; + len -= ret; + + /* transcode raw format, encode packets and output them */ + + for(i=0;isource_index == ist_index) { + os = output_files[ost->file_index]; + + if (ost->encoding_needed) { + switch(ost->st->codec.codec_type) { + case CODEC_TYPE_AUDIO: + do_audio_out(os, ost, ist, data_buf, data_size); + break; + case CODEC_TYPE_VIDEO: + do_video_out(os, ost, ist, &picture); + break; + } + } else { + /* no reencoding needed : output the packet directly */ + os->format->write_packet(os, ost->index, data_buf, data_size); + } + } + } + } + av_free_packet(&pkt); + + /* dump report by using the first video and audio streams */ + { + char buf[1024]; + AVFormatContext *oc; + INT64 total_size, ti; + AVCodecContext *enc; + int frame_number, vid; + double bitrate, ti1; + static INT64 last_time; + + if ((min_pts - last_time) >= 500000) { + last_time = min_pts; + + oc = output_files[0]; + + total_size = url_ftell(&oc->pb); + + buf[0] = '\0'; + ti = (1ULL << 63) - 1; + vid = 0; + for(i=0;ist->codec; + ist = ist_table[ost->source_index]; + if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) { + frame_number = ist->frame_number; + sprintf(buf + strlen(buf), "frame=%5d q=%2d ", + frame_number, enc->quality); + vid = 1; + } + /* compute min pts value */ + if (!ist->discard && ist->pts < ti) { + ti = ist->pts; + } + } + + ti1 = ti / 1000000.0; + if (ti1 < 0.1) + ti1 = 0.1; + bitrate = (double)(total_size * 8) / ti1 / 1000.0; + + sprintf(buf + strlen(buf), "size=%8LdkB time=%0.1f bitrate=%6.1fkbits/s", + total_size / 1024, ti1, bitrate); + + fprintf(stderr, "%s \r", buf); + fflush(stderr); + } + } + } + + /* dump report by using the first video and audio streams */ + { + char buf[1024]; + AVFormatContext *oc; + INT64 total_size, ti; + AVCodecContext *enc; + int frame_number, vid; + double bitrate, ti1; + + oc = output_files[0]; + + total_size = url_ftell(&oc->pb); + + buf[0] = '\0'; + ti = (1ULL << 63) - 1; + vid = 0; + for(i=0;ist->codec; + ist = ist_table[ost->source_index]; + if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) { + frame_number = ist->frame_number; + sprintf(buf + strlen(buf), "frame=%5d q=%2d ", + frame_number, enc->quality); + vid = 1; + } + /* compute min pts value */ + if (!ist->discard && ist->pts < ti) { + ti = ist->pts; + } + } + + ti1 = ti / 1000000.0; + if (ti1 < 0.1) + ti1 = 0.1; + bitrate = (double)(total_size * 8) / ti1 / 1000.0; + + sprintf(buf + strlen(buf), "size=%8LdkB time=%0.1f bitrate=%6.1fkbits/s", + total_size / 1024, ti1, bitrate); + + fprintf(stderr, "%s \n", buf); + } + /* close each encoder */ + for(i=0;iencoding_needed) { + avcodec_close(&ost->st->codec); + } + } + + /* close each decoder */ + for(i=0;idecoding_needed) { + avcodec_close(&ist->st->codec); + } + } + + + /* write the trailer if needed and close file */ + for(i=0;iformat->write_trailer(os); + } + /* finished ! */ + + ret = 0; + fail1: + if (ist_table) { + for(i=0;ipict_tmp.data[0]) + free(ost->pict_tmp.data[0]); + if (ost->video_resample) + img_resample_close(ost->img_resample_ctx); + if (ost->audio_resample) + audio_resample_close(ost->resample); + free(ost); + } + } + free(ost_table); + } + return ret; + fail: + ret = -ENOMEM; + goto fail1; +} + +#if 0 +int file_read(const char *filename) +{ + URLContext *h; + unsigned char buffer[1024]; + int len, i; + + if (url_open(&h, filename, O_RDONLY) < 0) { + printf("could not open '%s'\n", filename); + return -1; + } + for(;;) { + len = url_read(h, buffer, sizeof(buffer)); + if (len <= 0) + break; + for(i=0;iname, arg) != 0) f = f->next; + if (f == NULL) { + fprintf(stderr, "Invalid format: %s\n", arg); + exit(1); + } + file_format = f; +} + +void opt_video_bitrate(const char *arg) +{ + video_bit_rate = atoi(arg) * 1000; +} + +void opt_frame_rate(const char *arg) +{ + frame_rate = (int)(strtod(arg, 0) * FRAME_RATE_BASE); +} + +void opt_frame_size(const char *arg) +{ + parse_image_size(&frame_width, &frame_height, arg); + if (frame_width <= 0 || frame_height <= 0) { + fprintf(stderr, "Incorrect frame size\n"); + exit(1); + } + if ((frame_width % 2) != 0 || (frame_height % 2) != 0) { + fprintf(stderr, "Frame size must be a multiple of 2\n"); + exit(1); + } +} + +void opt_gop_size(const char *arg) +{ + gop_size = atoi(arg); +} + +void opt_qscale(const char *arg) +{ + video_qscale = atoi(arg); + if (video_qscale < 0 || + video_qscale > 31) { + fprintf(stderr, "qscale must be >= 1 and <= 31\n"); + exit(1); + } +} + + +void opt_audio_bitrate(const char *arg) +{ + audio_bit_rate = atoi(arg) * 1000; +} + +void opt_audio_rate(const char *arg) +{ + audio_sample_rate = atoi(arg); +} + +void opt_audio_channels(const char *arg) +{ + audio_channels = atoi(arg); +} + +void opt_video_device(const char *arg) +{ + v4l_device = strdup(arg); +} + +void opt_audio_device(const char *arg) +{ + audio_device = strdup(arg); +} + +void opt_audio_codec(const char *arg) +{ + AVCodec *p; + + p = first_avcodec; + while (p) { + if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_AUDIO) + break; + p = p->next; + } + if (p == NULL) { + fprintf(stderr, "Unknown audio codec '%s'\n", arg); + exit(1); + } else { + audio_codec_id = p->id; + } +} + +const char *motion_str[] = { + "zero", + "full", + "log", + "phods", + NULL, +}; + +void opt_motion_estimation(const char *arg) +{ + const char **p; + p = motion_str; + for(;;) { + if (!*p) { + fprintf(stderr, "Unknown motion estimation method '%s'\n", arg); + exit(1); + } + if (!strcmp(*p, arg)) + break; + p++; + } + motion_estimation_method = p - motion_str; +} + +void opt_video_codec(const char *arg) +{ + AVCodec *p; + + p = first_avcodec; + while (p) { + if (!strcmp(p->name, arg) && p->type == CODEC_TYPE_VIDEO) + break; + p = p->next; + } + if (p == NULL) { + fprintf(stderr, "Unknown video codec '%s'\n", arg); + exit(1); + } else { + video_codec_id = p->id; + } +} + +void opt_map(const char *arg) +{ + AVStreamMap *m; + const char *p; + + p = arg; + m = &stream_maps[nb_stream_maps++]; + + m->file_index = strtol(arg, (char **)&p, 0); + if (*p) + p++; + m->stream_index = strtol(arg, (char **)&p, 0); +} + +void opt_recording_time(const char *arg) +{ + recording_time = parse_date(arg, 1); +} + +/* return the number of packet read to find the codec parameters */ +int find_codec_parameters(AVFormatContext *ic) +{ + int val, i, count, ret, got_picture, size; + AVCodec *codec; + AVCodecContext *enc; + AVStream *st; + AVPacket *pkt; + AVPicture picture; + AVPacketList *pktl, **ppktl; + short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2]; + UINT8 *ptr; + + count = 0; + ppktl = &ic->packet_buffer; + for(;;) { + for(i=0;inb_streams;i++) { + enc = &ic->streams[i]->codec; + + switch(enc->codec_type) { + case CODEC_TYPE_AUDIO: + val = enc->sample_rate; + break; + case CODEC_TYPE_VIDEO: + val = enc->width; + break; + default: + val = 1; + break; + } + /* if no parameters supplied, then we should read it from + the stream */ + if (val == 0) + break; + } + if (i == ic->nb_streams) { + ret = count; + break; + } + + if (count == 0) { + /* open each codec */ + for(i=0;inb_streams;i++) { + st = ic->streams[i]; + codec = avcodec_find_decoder(st->codec.codec_id); + if (codec == NULL) { + ret = -1; + goto the_end; + } + avcodec_open(&st->codec, codec); + } + } + pktl = av_mallocz(sizeof(AVPacketList)); + if (!pktl) { + ret = -1; + break; + } + + /* add the packet in the buffered packet list */ + *ppktl = pktl; + ppktl = &pktl->next; + + pkt = &pktl->pkt; + if (ic->format->read_packet(ic, pkt) < 0) { + ret = -1; + break; + } + st = ic->streams[pkt->stream_index]; + + /* decode the data and update codec parameters */ + ptr = pkt->data; + size = pkt->size; + while (size > 0) { + switch(st->codec.codec_type) { + case CODEC_TYPE_VIDEO: + ret = avcodec_decode_video(&st->codec, &picture, &got_picture, ptr, size); + break; + case CODEC_TYPE_AUDIO: + ret = avcodec_decode_audio(&st->codec, samples, &got_picture, ptr, size); + break; + default: + ret = -1; + break; + } + if (ret < 0) { + ret = -1; + goto the_end; + } + if (got_picture) + break; + ptr += ret; + size -= ret; + } + + count++; + } + the_end: + if (count > 0) { + /* close each codec */ + for(i=0;inb_streams;i++) { + st = ic->streams[i]; + avcodec_close(&st->codec); + } + } + return ret; +} + + +void opt_input_file(const char *filename) +{ + AVFormatContext *ic; + AVFormatParameters params, *ap = ¶ms; + URLFormat url_format; + AVFormat *fmt; + int err, i, ret; + + ic = av_mallocz(sizeof(AVFormatContext)); + strcpy(ic->filename, filename); + /* first format guess to know if we must open file */ + fmt = file_format; + if (!fmt) + fmt = guess_format(NULL, filename, NULL); + + if (fmt == NULL || !(fmt->flags & AVFMT_NOFILE)) { + /* open file */ + if (url_fopen(&ic->pb, filename, URL_RDONLY) < 0) { + fprintf(stderr, "Could not open '%s'\n", filename); + exit(1); + } + + /* find format and set default parameters */ + fmt = file_format; + err = url_getformat(url_fileno(&ic->pb), &url_format); + if (err >= 0) { + if (!fmt) + fmt = guess_format(url_format.format_name, NULL, NULL); + ap->sample_rate = url_format.sample_rate; + ap->frame_rate = url_format.frame_rate; + ap->channels = url_format.channels; + ap->width = url_format.width; + ap->height = url_format.height; + ap->pix_fmt = url_format.pix_fmt; + } else { + if (!fmt) + fmt = guess_format(NULL, filename, NULL); + memset(ap, 0, sizeof(*ap)); + } + } else { + memset(ap, 0, sizeof(*ap)); + } + + if (!fmt || !fmt->read_header) { + fprintf(stderr, "%s: Unknown file format\n", filename); + exit(1); + } + ic->format = fmt; + + /* get default parameters from command line */ + if (!ap->sample_rate) + ap->sample_rate = audio_sample_rate; + if (!ap->channels) + ap->channels = audio_channels; + + if (!ap->frame_rate) + ap->frame_rate = frame_rate; + if (!ap->width) + ap->width = frame_width; + if (!ap->height) + ap->height = frame_height; + + err = ic->format->read_header(ic, ap); + if (err < 0) { + fprintf(stderr, "%s: Error while parsing header\n", filename); + exit(1); + } + + /* If not enough info for the codecs, we decode the first frames + to get it. (used in mpeg case for example) */ + ret = find_codec_parameters(ic); + if (ret < 0) { + fprintf(stderr, "%s: could not find codec parameters\n", filename); + exit(1); + } + + /* update the current parameters so that they match the one of the input stream */ + for(i=0;inb_streams;i++) { + AVCodecContext *enc = &ic->streams[i]->codec; + switch(enc->codec_type) { + case CODEC_TYPE_AUDIO: + audio_channels = enc->channels; + audio_sample_rate = enc->sample_rate; + break; + case CODEC_TYPE_VIDEO: + frame_height = enc->height; + frame_width = enc->width; + frame_rate = enc->frame_rate; + break; + } + } + + input_files[nb_input_files] = ic; + /* dump the file content */ + dump_format(ic, nb_input_files, filename, 0); + nb_input_files++; + file_format = NULL; +} + +void opt_output_file(const char *filename) +{ + AVStream *st; + AVFormatContext *oc; + int use_video, use_audio, nb_streams; + int codec_id; + + if (!strcmp(filename, "-")) + filename = "pipe:"; + + oc = av_mallocz(sizeof(AVFormatContext)); + + if (!file_format) { + file_format = guess_format(NULL, filename, NULL); + if (!file_format) + file_format = &mpeg_mux_format; + } + + oc->format = file_format; + + if (!strcmp(file_format->name, "ffm") && + strstart(filename, "http:", NULL)) { + /* special case for files sent to ffserver: we get the stream + parameters from ffserver */ + if (read_ffserver_streams(oc, filename) < 0) { + fprintf(stderr, "Could not read stream parameters from '%s'\n", filename); + exit(1); + } + } else { + use_video = file_format->video_codec != CODEC_ID_NONE; + use_audio = file_format->audio_codec != CODEC_ID_NONE; + + if (audio_disable) { + use_audio = 0; + } + if (video_disable) { + use_video = 0; + } + + nb_streams = 0; + if (use_video) { + AVCodecContext *video_enc; + + st = av_mallocz(sizeof(AVStream)); + if (!st) { + fprintf(stderr, "Could not alloc stream\n"); + exit(1); + } + video_enc = &st->codec; + + codec_id = file_format->video_codec; + if (video_codec_id != CODEC_ID_NONE) + codec_id = video_codec_id; + + video_enc->codec_id = codec_id; + video_enc->codec_type = CODEC_TYPE_VIDEO; + + video_enc->bit_rate = video_bit_rate; + video_enc->frame_rate = frame_rate; + + video_enc->width = frame_width; + video_enc->height = frame_height; + if (!intra_only) + video_enc->gop_size = gop_size; + else + video_enc->gop_size = 0; + if (video_qscale || same_quality) { + video_enc->flags |= CODEC_FLAG_QSCALE; + video_enc->quality = video_qscale; + } + + oc->streams[nb_streams] = st; + nb_streams++; + } + + if (use_audio) { + AVCodecContext *audio_enc; + + st = av_mallocz(sizeof(AVStream)); + if (!st) { + fprintf(stderr, "Could not alloc stream\n"); + exit(1); + } + audio_enc = &st->codec; + codec_id = file_format->audio_codec; + if (audio_codec_id != CODEC_ID_NONE) + codec_id = audio_codec_id; + audio_enc->codec_id = codec_id; + audio_enc->codec_type = CODEC_TYPE_AUDIO; + + audio_enc->bit_rate = audio_bit_rate; + audio_enc->sample_rate = audio_sample_rate; + audio_enc->channels = audio_channels; + oc->streams[nb_streams] = st; + nb_streams++; + } + + oc->nb_streams = nb_streams; + + if (!nb_streams) { + fprintf(stderr, "No audio or video selected\n"); + exit(1); + } + + if (str_title) + nstrcpy(oc->title, sizeof(oc->title), str_title); + if (str_author) + nstrcpy(oc->author, sizeof(oc->author), str_author); + if (str_copyright) + nstrcpy(oc->copyright, sizeof(oc->copyright), str_copyright); + if (str_comment) + nstrcpy(oc->comment, sizeof(oc->comment), str_comment); + } + + output_files[nb_output_files] = oc; + /* dump the file content */ + dump_format(oc, nb_output_files, filename, 1); + nb_output_files++; + + strcpy(oc->filename, filename); + if (!(oc->format->flags & AVFMT_NOFILE)) { + /* test if it already exists to avoid loosing precious files */ + if (!file_overwrite && + (strchr(filename, ':') == NULL || + strstart(filename, "file:", NULL))) { + if (url_exist(filename)) { + int c; + + printf("File '%s' already exists. Overwrite ? [y/N] ", filename); + fflush(stdout); + c = getchar(); + if (toupper(c) != 'Y') { + fprintf(stderr, "Not overwriting - exiting\n"); + exit(1); + } + } + } + + /* open the file */ + if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) { + fprintf(stderr, "Could not open '%s'\n", filename); + exit(1); + } + } + + /* reset some options */ + file_format = NULL; + audio_disable = 0; + video_disable = 0; + audio_codec_id = CODEC_ID_NONE; + video_codec_id = CODEC_ID_NONE; +} + +void show_formats(void) +{ + AVFormat *f; + URLProtocol *up; + AVCodec *p; + const char **pp; + + printf("File formats:\n"); + printf(" Encoding:"); + for(f = first_format; f != NULL; f = f->next) { + if (f->write_header) + printf(" %s", f->name); + } + printf("\n"); + printf(" Decoding:"); + for(f = first_format; f != NULL; f = f->next) { + if (f->read_header) + printf(" %s", f->name); + } + printf("\n"); + + printf("Codecs:\n"); + printf(" Encoders:"); + for(p = first_avcodec; p != NULL; p = p->next) { + if (p->encode) + printf(" %s", p->name); + } + printf("\n"); + + printf(" Decoders:"); + for(p = first_avcodec; p != NULL; p = p->next) { + if (p->decode) + printf(" %s", p->name); + } + printf("\n"); + + printf("Supported file protocols:"); + for(up = first_protocol; up != NULL; up = up->next) + printf(" %s:", up->name); + printf("\n"); + + printf("Frame size abbreviations: sqcif qcif cif 4cif\n"); + printf("Motion estimation methods:"); + pp = motion_str; + while (*pp) { + printf(" %s", *pp); + if ((pp - motion_str) == ME_ZERO) + printf("(fastest)"); + else if ((pp - motion_str) == ME_FULL) + printf("(slowest)"); + else if ((pp - motion_str) == ME_LOG) + printf("(default)"); + pp++; + } + printf("\n"); + exit(1); +} + +void show_help(void) +{ + const OptionDef *po; + int i, expert; + + printf("ffmpeg version " FFMPEG_VERSION ", Copyright (c) 2000,2001 Gerard Lantau\n" + "usage: ffmpeg [[options] -i input_file]... {[options] outfile}...\n" + "Hyper fast MPEG1/MPEG4/H263/RV and AC3/MPEG audio encoder\n" + "\n" + "Main options are:\n"); + for(i=0;i<2;i++) { + if (i == 1) + printf("\nAdvanced options are:\n"); + for(po = options; po->name != NULL; po++) { + char buf[64]; + expert = (po->flags & OPT_EXPERT) != 0; + if (expert == i) { + strcpy(buf, po->name); + if (po->flags & HAS_ARG) { + strcat(buf, " "); + strcat(buf, po->argname); + } + printf("-%-17s %s\n", buf, po->help); + } + } + } + + exit(1); +} + +const OptionDef options[] = { + { "L", 0, {show_licence}, "show license" }, + { "h", 0, {show_help}, "show help" }, + { "formats", 0, {show_formats}, "show available formats, codecs, protocols, ..." }, + { "f", HAS_ARG, {opt_format}, "force format", "fmt" }, + { "i", HAS_ARG, {opt_input_file}, "input file name", "filename" }, + { "y", OPT_BOOL, {int_arg:&file_overwrite}, "overwrite output files" }, + { "map", HAS_ARG | OPT_EXPERT, {opt_map}, "set input stream mapping", "file:stream" }, + { "t", HAS_ARG, {opt_recording_time}, "set the recording time", "duration" }, + { "title", HAS_ARG | OPT_STRING, {str_arg: &str_title}, "set the title", "string" }, + { "author", HAS_ARG | OPT_STRING, {str_arg: &str_author}, "set the author", "string" }, + { "copyright", HAS_ARG | OPT_STRING, {str_arg: &str_copyright}, "set the copyright", "string" }, + { "comment", HAS_ARG | OPT_STRING, {str_arg: &str_comment}, "set the comment", "string" }, + /* video options */ + { "b", HAS_ARG, {opt_video_bitrate}, "set video bitrate (in kbit/s)", "bitrate" }, + { "r", HAS_ARG, {opt_frame_rate}, "set frame rate (in Hz)", "rate" }, + { "s", HAS_ARG, {opt_frame_size}, "set frame size (WxH or abbreviation)", "size" }, + { "g", HAS_ARG | OPT_EXPERT, {opt_gop_size}, "set the group of picture size", "gop_size" }, + { "intra", OPT_BOOL | OPT_EXPERT, {int_arg: &intra_only}, "use only intra frames"}, + { "vn", OPT_BOOL, {int_arg: &video_disable}, "disable video" }, + { "qscale", HAS_ARG | OPT_EXPERT, {opt_qscale}, "use fixed video quantiser scale (VBR)", "q" }, + { "vd", HAS_ARG | OPT_EXPERT, {opt_video_device}, "set video device", "device" }, + { "vcodec", HAS_ARG | OPT_EXPERT, {opt_video_codec}, "force video codec", "codec" }, + { "me", HAS_ARG | OPT_EXPERT, {opt_motion_estimation}, "set motion estimation method", + "method" }, + { "sameq", OPT_BOOL, {int_arg: &same_quality}, + "use same video quality as source (implies VBR)" }, + /* audio options */ + { "ab", HAS_ARG, {opt_audio_bitrate}, "set audio bitrate (in kbit/s)", "bitrate", }, + { "ar", HAS_ARG, {opt_audio_rate}, "set audio sampling rate (in Hz)", "rate" }, + { "ac", HAS_ARG, {opt_audio_channels}, "set number of audio channels", "channels" }, + { "an", OPT_BOOL, {int_arg: &audio_disable}, "disable audio" }, + { "ad", HAS_ARG | OPT_EXPERT, {opt_audio_device}, "set audio device", "device" }, + { "acodec", HAS_ARG | OPT_EXPERT, {opt_audio_codec}, "force audio codec", "codec" }, + + { NULL, }, +}; + +int main(int argc, char **argv) +{ + int optindex, i; + const char *opt, *arg; + const OptionDef *po; + + register_all(); + + if (argc <= 1) + show_help(); + + optindex = 1; + while (optindex < argc) { + opt = argv[optindex++]; + + if (opt[0] == '-' && opt[1] != '\0') { + po = options; + while (po->name != NULL) { + if (!strcmp(opt + 1, po->name)) + break; + po++; + } + if (!po->name) { + fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt); + exit(1); + } + arg = NULL; + if (po->flags & HAS_ARG) + arg = argv[optindex++]; + if (po->flags & OPT_STRING) { + char *str; + str = strdup(arg); + *po->u.str_arg = str; + } else if (po->flags & OPT_BOOL) { + *po->u.int_arg = 1; + } else { + po->u.func_arg(arg); + } + } else { + opt_output_file(opt); + } + } + + + if (nb_input_files == 0) { + if (nb_output_files != 1) { + fprintf(stderr, "Only one output file supported when grabbing\n"); + exit(1); + } + av_grab(output_files[0]); + } else { + if (nb_output_files <= 0) { + fprintf(stderr, "Must supply at least one output file\n"); + exit(1); + } + av_encode(output_files, nb_output_files, input_files, nb_input_files, + stream_maps, nb_stream_maps); + } + + /* close files */ + for(i=0;iformat->flags & AVFMT_NOFILE)) + url_fclose(&output_files[i]->pb); + } + for(i=0;iformat->flags & AVFMT_NOFILE)) + url_fclose(&input_files[i]->pb); + } + + return 0; +} diff --git a/ffserver.c b/ffserver.c new file mode 100644 index 0000000000..cfabe30823 --- /dev/null +++ b/ffserver.c @@ -0,0 +1,1577 @@ +/* + * Multiple format streaming server + * Copyright (c) 2000,2001 Gerard Lantau. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "avformat.h" + +/* maximum number of simultaneous HTTP connections */ +#define HTTP_MAX_CONNECTIONS 2000 + +enum HTTPState { + HTTPSTATE_WAIT_REQUEST, + HTTPSTATE_SEND_HEADER, + HTTPSTATE_SEND_DATA_HEADER, + HTTPSTATE_SEND_DATA, + HTTPSTATE_SEND_DATA_TRAILER, + HTTPSTATE_RECEIVE_DATA, + HTTPSTATE_WAIT_FEED, +}; + +const char *http_state[] = { + "WAIT_REQUEST", + "SEND_HEADER", + "SEND_DATA_HEADER", + "SEND_DATA", + "SEND_DATA_TRAILER", + "RECEIVE_DATA", + "WAIT_FEED", +}; + +#define IOBUFFER_MAX_SIZE 16384 + +/* coef for exponential mean for bitrate estimation in statistics */ +#define AVG_COEF 0.9 + +/* timeouts are in ms */ +#define REQUEST_TIMEOUT (15 * 1000) +#define SYNC_TIMEOUT (10 * 1000) + +/* context associated with one connection */ +typedef struct HTTPContext { + enum HTTPState state; + int fd; /* socket file descriptor */ + struct sockaddr_in from_addr; /* origin */ + struct pollfd *poll_entry; /* used when polling */ + long timeout; + UINT8 buffer[IOBUFFER_MAX_SIZE]; + UINT8 *buffer_ptr, *buffer_end; + int http_error; + struct HTTPContext *next; + int got_key_frame[MAX_STREAMS]; /* for each type */ + INT64 data_count; + /* feed input */ + int feed_fd; + /* input format handling */ + AVFormatContext *fmt_in; + /* output format handling */ + struct FFStream *stream; + AVFormatContext fmt_ctx; + int last_packet_sent; /* true if last data packet was sent */ +} HTTPContext; + +/* each generated stream is described here */ +enum StreamType { + STREAM_TYPE_LIVE, + STREAM_TYPE_STATUS, +}; + +/* description of each stream of the ffserver.conf file */ +typedef struct FFStream { + enum StreamType stream_type; + char filename[1024]; /* stream filename */ + struct FFStream *feed; + AVFormat *fmt; + int nb_streams; + AVStream *streams[MAX_STREAMS]; + int feed_streams[MAX_STREAMS]; /* index of streams in the feed */ + char feed_filename[1024]; /* file name of the feed storage, or + input file name for a stream */ + struct FFStream *next; + /* feed specific */ + int feed_opened; /* true if someone if writing to feed */ + int is_feed; /* true if it is a feed */ + INT64 feed_max_size; /* maximum storage size */ + INT64 feed_write_index; /* current write position in feed (it wraps round) */ + INT64 feed_size; /* current size of feed */ + struct FFStream *next_feed; +} FFStream; + +typedef struct FeedData { + long long data_count; + float avg_frame_size; /* frame size averraged over last frames with exponential mean */ +} FeedData; + +struct sockaddr_in my_addr; +char logfilename[1024]; +HTTPContext *first_http_ctx; +FFStream *first_feed; /* contains only feeds */ +FFStream *first_stream; /* contains all streams, including feeds */ + +static int handle_http(HTTPContext *c, long cur_time); +static int http_parse_request(HTTPContext *c); +static int http_send_data(HTTPContext *c); +static void compute_stats(HTTPContext *c); +static int open_input_stream(HTTPContext *c, const char *info); +static int http_start_receive_data(HTTPContext *c); +static int http_receive_data(HTTPContext *c); + +int nb_max_connections; +int nb_connections; + +static long gettime_ms(void) +{ + struct timeval tv; + + gettimeofday(&tv,NULL); + return (long long)tv.tv_sec * 1000 + (tv.tv_usec / 1000); +} + +static FILE *logfile = NULL; + +static void http_log(char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + + if (logfile) + vfprintf(logfile, fmt, ap); + va_end(ap); +} + +/* main loop of the http server */ +static int http_server(struct sockaddr_in my_addr) +{ + int server_fd, tmp, ret; + struct sockaddr_in from_addr; + struct pollfd poll_table[HTTP_MAX_CONNECTIONS + 1], *poll_entry; + HTTPContext *c, **cp; + long cur_time; + + server_fd = socket(AF_INET,SOCK_STREAM,0); + if (server_fd < 0) { + perror ("socket"); + return -1; + } + + tmp = 1; + setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp)); + + if (bind (server_fd, (struct sockaddr *) &my_addr, sizeof (my_addr)) < 0) { + perror ("bind"); + close(server_fd); + return -1; + } + + if (listen (server_fd, 5) < 0) { + perror ("listen"); + close(server_fd); + return -1; + } + + http_log("ffserver started.\n"); + + fcntl(server_fd, F_SETFL, O_NONBLOCK); + first_http_ctx = NULL; + nb_connections = 0; + first_http_ctx = NULL; + for(;;) { + poll_entry = poll_table; + poll_entry->fd = server_fd; + poll_entry->events = POLLIN; + poll_entry++; + + /* wait for events on each HTTP handle */ + c = first_http_ctx; + while (c != NULL) { + int fd; + fd = c->fd; + switch(c->state) { + case HTTPSTATE_WAIT_REQUEST: + c->poll_entry = poll_entry; + poll_entry->fd = fd; + poll_entry->events = POLLIN; + poll_entry++; + break; + case HTTPSTATE_SEND_HEADER: + case HTTPSTATE_SEND_DATA_HEADER: + case HTTPSTATE_SEND_DATA: + case HTTPSTATE_SEND_DATA_TRAILER: + c->poll_entry = poll_entry; + poll_entry->fd = fd; + poll_entry->events = POLLOUT; + poll_entry++; + break; + case HTTPSTATE_RECEIVE_DATA: + c->poll_entry = poll_entry; + poll_entry->fd = fd; + poll_entry->events = POLLIN; + poll_entry++; + break; + case HTTPSTATE_WAIT_FEED: + /* need to catch errors */ + c->poll_entry = poll_entry; + poll_entry->fd = fd; + poll_entry->events = 0; + poll_entry++; + break; + default: + c->poll_entry = NULL; + break; + } + c = c->next; + } + + /* wait for an event on one connection. We poll at least every + second to handle timeouts */ + do { + ret = poll(poll_table, poll_entry - poll_table, 1000); + } while (ret == -1); + + cur_time = gettime_ms(); + + /* now handle the events */ + + cp = &first_http_ctx; + while ((*cp) != NULL) { + c = *cp; + if (handle_http (c, cur_time) < 0) { + /* close and free the connection */ + close(c->fd); + if (c->fmt_in) + av_close_input_file(c->fmt_in); + *cp = c->next; + free(c); + nb_connections--; + } else { + cp = &c->next; + } + } + + /* new connection request ? */ + poll_entry = poll_table; + if (poll_entry->revents & POLLIN) { + int fd, len; + + len = sizeof(from_addr); + fd = accept(server_fd, (struct sockaddr *)&from_addr, + &len); + if (fd >= 0) { + fcntl(fd, F_SETFL, O_NONBLOCK); + /* XXX: should output a warning page when coming + close to the connection limit */ + if (nb_connections >= nb_max_connections) { + close(fd); + } else { + /* add a new connection */ + c = av_mallocz(sizeof(HTTPContext)); + c->next = first_http_ctx; + first_http_ctx = c; + c->fd = fd; + c->poll_entry = NULL; + c->from_addr = from_addr; + c->state = HTTPSTATE_WAIT_REQUEST; + c->buffer_ptr = c->buffer; + c->buffer_end = c->buffer + IOBUFFER_MAX_SIZE; + c->timeout = cur_time + REQUEST_TIMEOUT; + nb_connections++; + } + } + } + poll_entry++; + } +} + +static int handle_http(HTTPContext *c, long cur_time) +{ + int len; + + switch(c->state) { + case HTTPSTATE_WAIT_REQUEST: + /* timeout ? */ + if ((c->timeout - cur_time) < 0) + return -1; + if (c->poll_entry->revents & (POLLERR | POLLHUP)) + return -1; + + /* no need to read if no events */ + if (!(c->poll_entry->revents & POLLIN)) + return 0; + /* read the data */ + len = read(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr); + if (len < 0) { + if (errno != EAGAIN && errno != EINTR) + return -1; + } else if (len == 0) { + return -1; + } else { + /* search for end of request. XXX: not fully correct since garbage could come after the end */ + UINT8 *ptr; + c->buffer_ptr += len; + ptr = c->buffer_ptr; + if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) || + (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) { + /* request found : parse it and reply */ + if (http_parse_request(c) < 0) + return -1; + } else if (ptr >= c->buffer_end) { + /* request too long: cannot do anything */ + return -1; + } + } + break; + + case HTTPSTATE_SEND_HEADER: + if (c->poll_entry->revents & (POLLERR | POLLHUP)) + return -1; + + /* no need to read if no events */ + if (!(c->poll_entry->revents & POLLOUT)) + return 0; + len = write(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr); + if (len < 0) { + if (errno != EAGAIN && errno != EINTR) { + /* error : close connection */ + return -1; + } + } else { + c->buffer_ptr += len; + if (c->buffer_ptr >= c->buffer_end) { + /* if error, exit */ + if (c->http_error) + return -1; + /* all the buffer was send : synchronize to the incoming stream */ + c->state = HTTPSTATE_SEND_DATA_HEADER; + c->buffer_ptr = c->buffer_end = c->buffer; + } + } + break; + + case HTTPSTATE_SEND_DATA: + case HTTPSTATE_SEND_DATA_HEADER: + case HTTPSTATE_SEND_DATA_TRAILER: + /* no need to read if no events */ + if (c->poll_entry->revents & (POLLERR | POLLHUP)) + return -1; + + if (!(c->poll_entry->revents & POLLOUT)) + return 0; + if (http_send_data(c) < 0) + return -1; + break; + case HTTPSTATE_RECEIVE_DATA: + /* no need to read if no events */ + if (c->poll_entry->revents & (POLLERR | POLLHUP)) + return -1; + if (!(c->poll_entry->revents & POLLIN)) + return 0; + if (http_receive_data(c) < 0) + return -1; + break; + case HTTPSTATE_WAIT_FEED: + /* no need to read if no events */ + if (c->poll_entry->revents & (POLLERR | POLLHUP)) + return -1; + + /* nothing to do, we'll be waken up by incoming feed packets */ + break; + default: + return -1; + } + return 0; +} + +/* parse http request and prepare header */ +static int http_parse_request(HTTPContext *c) +{ + char *p; + int post; + char cmd[32]; + char info[1024], *filename; + char url[1024], *q; + char protocol[32]; + char msg[1024]; + const char *mime_type; + FFStream *stream; + + p = c->buffer; + q = cmd; + while (!isspace(*p) && *p != '\0') { + if ((q - cmd) < sizeof(cmd) - 1) + *q++ = *p; + p++; + } + *q = '\0'; + if (!strcmp(cmd, "GET")) + post = 0; + else if (!strcmp(cmd, "POST")) + post = 1; + else + return -1; + + while (isspace(*p)) p++; + q = url; + while (!isspace(*p) && *p != '\0') { + if ((q - url) < sizeof(url) - 1) + *q++ = *p; + p++; + } + *q = '\0'; + + while (isspace(*p)) p++; + q = protocol; + while (!isspace(*p) && *p != '\0') { + if ((q - protocol) < sizeof(protocol) - 1) + *q++ = *p; + p++; + } + *q = '\0'; + if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1")) + return -1; + + /* find the filename and the optional info string in the request */ + p = url; + if (*p == '/') + p++; + filename = p; + p = strchr(p, '?'); + if (p) { + strcpy(info, p); + *p = '\0'; + } else { + info[0] = '\0'; + } + + stream = first_stream; + while (stream != NULL) { + if (!strcmp(stream->filename, filename)) + break; + stream = stream->next; + } + if (stream == NULL) { + sprintf(msg, "File '%s' not found", url); + goto send_error; + } + c->stream = stream; + + /* should do it after so that the size can be computed */ + { + char buf1[32], buf2[32], *p; + time_t ti; + /* XXX: reentrant function ? */ + p = inet_ntoa(c->from_addr.sin_addr); + strcpy(buf1, p); + ti = time(NULL); + p = ctime(&ti); + strcpy(buf2, p); + p = buf2 + strlen(p) - 1; + if (*p == '\n') + *p = '\0'; + http_log("%s - - [%s] \"%s %s %s\" %d %d\n", + buf1, buf2, cmd, url, protocol, 200, 1024); + } + + /* XXX: add there authenticate and IP match */ + + if (post) { + /* if post, it means a feed is being sent */ + if (!stream->is_feed) { + sprintf(msg, "POST command not handled"); + goto send_error; + } + if (http_start_receive_data(c) < 0) { + sprintf(msg, "could not open feed"); + goto send_error; + } + c->http_error = 0; + c->state = HTTPSTATE_RECEIVE_DATA; + return 0; + } + + if (c->stream->stream_type == STREAM_TYPE_STATUS) + goto send_stats; + + /* open input stream */ + if (open_input_stream(c, info) < 0) { + sprintf(msg, "Input stream corresponding to '%s' not found", url); + goto send_error; + } + + /* prepare http header */ + q = c->buffer; + q += sprintf(q, "HTTP/1.0 200 OK\r\n"); + mime_type = c->stream->fmt->mime_type; + if (!mime_type) + mime_type = "application/x-octet_stream"; + q += sprintf(q, "Content-type: %s\r\n", mime_type); + q += sprintf(q, "Pragma: no-cache\r\n"); + + /* for asf, we need extra headers */ + if (!strcmp(c->stream->fmt->name,"asf")) { + q += sprintf(q, "Pragma: features=broadcast\r\n"); + } + q += sprintf(q, "\r\n"); + + /* prepare output buffer */ + c->http_error = 0; + c->buffer_ptr = c->buffer; + c->buffer_end = q; + c->state = HTTPSTATE_SEND_HEADER; + return 0; + send_error: + c->http_error = 404; + q = c->buffer; + q += sprintf(q, "HTTP/1.0 404 Not Found\r\n"); + q += sprintf(q, "Content-type: %s\r\n", "text/html"); + q += sprintf(q, "\r\n"); + q += sprintf(q, "\n"); + q += sprintf(q, "404 Not Found\n"); + q += sprintf(q, "%s\n", msg); + q += sprintf(q, "\n"); + + /* prepare output buffer */ + c->buffer_ptr = c->buffer; + c->buffer_end = q; + c->state = HTTPSTATE_SEND_HEADER; + return 0; + send_stats: + compute_stats(c); + c->http_error = 200; /* horrible : we use this value to avoid + going to the send data state */ + c->state = HTTPSTATE_SEND_HEADER; + return 0; +} + +static void compute_stats(HTTPContext *c) +{ + HTTPContext *c1; + FFStream *stream; + char *q, *p; + time_t ti; + int i; + + q = c->buffer; + q += sprintf(q, "HTTP/1.0 200 OK\r\n"); + q += sprintf(q, "Content-type: %s\r\n", "text/html"); + q += sprintf(q, "Pragma: no-cache\r\n"); + q += sprintf(q, "\r\n"); + + q += sprintf(q, "FFServer Status\n"); + q += sprintf(q, "

FFServer Status

\n"); + /* format status */ + q += sprintf(q, "

Available Streams

\n"); + q += sprintf(q, "\n"); + q += sprintf(q, "
PathFormatBit rate (kbits/s)VideoAudioFeed\n"); + stream = first_stream; + while (stream != NULL) { + q += sprintf(q, "
%s ", + stream->filename, stream->filename); + switch(stream->stream_type) { + case STREAM_TYPE_LIVE: + { + int audio_bit_rate = 0; + int video_bit_rate = 0; + + for(i=0;inb_streams;i++) { + AVStream *st = stream->streams[i]; + switch(st->codec.codec_type) { + case CODEC_TYPE_AUDIO: + audio_bit_rate += st->codec.bit_rate; + break; + case CODEC_TYPE_VIDEO: + video_bit_rate += st->codec.bit_rate; + break; + } + } + q += sprintf(q, " %s %d %d %d", + stream->fmt->name, + (audio_bit_rate + video_bit_rate) / 1000, + video_bit_rate / 1000, audio_bit_rate / 1000); + if (stream->feed) { + q += sprintf(q, "%s", stream->feed->filename); + } else { + q += sprintf(q, "%s", stream->feed_filename); + } + q += sprintf(q, "\n"); + } + break; + default: + q += sprintf(q, " - - - -\n"); + break; + } + stream = stream->next; + } + q += sprintf(q, "
\n"); + +#if 0 + { + float avg; + AVCodecContext *enc; + char buf[1024]; + + /* feed status */ + stream = first_feed; + while (stream != NULL) { + q += sprintf(q, "

Feed '%s'

\n", stream->filename); + q += sprintf(q, "\n"); + q += sprintf(q, "
ParametersFrame countSizeAvg bitrate (kbits/s)\n"); + for(i=0;inb_streams;i++) { + AVStream *st = stream->streams[i]; + FeedData *fdata = st->priv_data; + enc = &st->codec; + + avcodec_string(buf, sizeof(buf), enc); + avg = fdata->avg_frame_size * (float)enc->rate * 8.0; + if (enc->codec->type == CODEC_TYPE_AUDIO && enc->frame_size > 0) + avg /= enc->frame_size; + q += sprintf(q, "
%s %d %Ld %0.1f\n", + buf, enc->frame_number, fdata->data_count, avg / 1000.0); + } + q += sprintf(q, "
\n"); + stream = stream->next_feed; + } + } +#endif + + /* connection status */ + q += sprintf(q, "

Connection Status

\n"); + + q += sprintf(q, "Number of connections: %d / %d
\n", + nb_connections, nb_max_connections); + + q += sprintf(q, "\n"); + q += sprintf(q, "
#FileIPStateSize\n"); + c1 = first_http_ctx; + i = 0; + while (c1 != NULL) { + i++; + p = inet_ntoa(c1->from_addr.sin_addr); + q += sprintf(q, "
%d%s%s %s %s %Ld\n", + i, c1->stream->filename, + c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "", + p, + http_state[c1->state], + c1->data_count); + c1 = c1->next; + } + q += sprintf(q, "
\n"); + + /* date */ + ti = time(NULL); + p = ctime(&ti); + q += sprintf(q, "
Generated at %s", p); + q += sprintf(q, "\n\n"); + + c->buffer_ptr = c->buffer; + c->buffer_end = q; +} + + +static void http_write_packet(void *opaque, + unsigned char *buf, int size) +{ + HTTPContext *c = opaque; + if (size > IOBUFFER_MAX_SIZE) + abort(); + memcpy(c->buffer, buf, size); + c->buffer_ptr = c->buffer; + c->buffer_end = c->buffer + size; +} + +static int open_input_stream(HTTPContext *c, const char *info) +{ + char buf[128]; + char input_filename[1024]; + AVFormatContext *s; + int buf_size; + INT64 stream_pos; + + /* find file name */ + if (c->stream->feed) { + strcpy(input_filename, c->stream->feed->feed_filename); + buf_size = FFM_PACKET_SIZE; + /* compute position (absolute time) */ + if (find_info_tag(buf, sizeof(buf), "date", info)) { + stream_pos = parse_date(buf, 0); + } else { + stream_pos = gettime(); + } + } else { + strcpy(input_filename, c->stream->feed_filename); + buf_size = 0; + /* compute position (relative time) */ + if (find_info_tag(buf, sizeof(buf), "date", info)) { + stream_pos = parse_date(buf, 1); + } else { + stream_pos = 0; + } + } + if (input_filename[0] == '\0') + return -1; + + /* open stream */ + s = av_open_input_file(input_filename, buf_size); + if (!s) + return -1; + c->fmt_in = s; + + if (c->fmt_in->format->read_seek) { + c->fmt_in->format->read_seek(c->fmt_in, stream_pos); + } + + // printf("stream %s opened pos=%0.6f\n", input_filename, stream_pos / 1000000.0); + return 0; +} + +static int http_prepare_data(HTTPContext *c) +{ + int i; + + switch(c->state) { + case HTTPSTATE_SEND_DATA_HEADER: + memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx)); + if (c->stream->feed) { + /* open output stream by using specified codecs */ + c->fmt_ctx.format = c->stream->fmt; + c->fmt_ctx.nb_streams = c->stream->nb_streams; + for(i=0;ifmt_ctx.nb_streams;i++) { + AVStream *st; + st = av_mallocz(sizeof(AVStream)); + c->fmt_ctx.streams[i] = st; + memcpy(st, c->stream->streams[i], sizeof(AVStream)); + st->codec.frame_number = 0; /* XXX: should be done in + AVStream, not in codec */ + c->got_key_frame[i] = 0; + } + } else { + /* open output stream by using codecs in specified file */ + c->fmt_ctx.format = c->stream->fmt; + c->fmt_ctx.nb_streams = c->fmt_in->nb_streams; + for(i=0;ifmt_ctx.nb_streams;i++) { + AVStream *st; + st = av_mallocz(sizeof(AVStream)); + c->fmt_ctx.streams[i] = st; + memcpy(st, c->fmt_in->streams[i], sizeof(AVStream)); + st->codec.frame_number = 0; /* XXX: should be done in + AVStream, not in codec */ + c->got_key_frame[i] = 0; + } + } + init_put_byte(&c->fmt_ctx.pb, c->buffer, IOBUFFER_MAX_SIZE, + 1, c, NULL, http_write_packet, NULL); + c->fmt_ctx.pb.is_streamed = 1; + /* prepare header */ + c->fmt_ctx.format->write_header(&c->fmt_ctx); + c->state = HTTPSTATE_SEND_DATA; + c->last_packet_sent = 0; + break; + case HTTPSTATE_SEND_DATA: + /* find a new packet */ +#if 0 + fifo_total_size = http_fifo_write_count - c->last_http_fifo_write_count; + if (fifo_total_size >= ((3 * FIFO_MAX_SIZE) / 4)) { + /* overflow : resync. We suppose that wptr is at this + point a pointer to a valid packet */ + c->rptr = http_fifo.wptr; + for(i=0;ifmt_ctx.nb_streams;i++) { + c->got_key_frame[i] = 0; + } + } + + start_rptr = c->rptr; + if (fifo_read(&http_fifo, (UINT8 *)&hdr, sizeof(hdr), &c->rptr) < 0) + return 0; + payload_size = ntohs(hdr.payload_size); + payload = malloc(payload_size); + if (fifo_read(&http_fifo, payload, payload_size, &c->rptr) < 0) { + /* cannot read all the payload */ + free(payload); + c->rptr = start_rptr; + return 0; + } + + c->last_http_fifo_write_count = http_fifo_write_count - + fifo_size(&http_fifo, c->rptr); + + if (c->stream->stream_type != STREAM_TYPE_MASTER) { + /* test if the packet can be handled by this format */ + ret = 0; + for(i=0;ifmt_ctx.nb_streams;i++) { + AVStream *st = c->fmt_ctx.streams[i]; + if (test_header(&hdr, &st->codec)) { + /* only begin sending when got a key frame */ + if (st->codec.key_frame) + c->got_key_frame[i] = 1; + if (c->got_key_frame[i]) { + ret = c->fmt_ctx.format->write_packet(&c->fmt_ctx, i, + payload, payload_size); + } + break; + } + } + if (ret) { + /* must send trailer now */ + c->state = HTTPSTATE_SEND_DATA_TRAILER; + } + } else { + /* master case : send everything */ + char *q; + q = c->buffer; + memcpy(q, &hdr, sizeof(hdr)); + q += sizeof(hdr); + memcpy(q, payload, payload_size); + q += payload_size; + c->buffer_ptr = c->buffer; + c->buffer_end = q; + } + free(payload); +#endif + { + AVPacket pkt; + + /* read a packet from the input stream */ + if (c->stream->feed) { + ffm_set_write_index(c->fmt_in, + c->stream->feed->feed_write_index, + c->stream->feed->feed_size); + } + if (av_read_packet(c->fmt_in, &pkt) < 0) { + if (c->stream->feed && c->stream->feed->feed_opened) { + /* if coming from feed, it means we reached the end of the + ffm file, so must wait for more data */ + c->state = HTTPSTATE_WAIT_FEED; + return 1; /* state changed */ + } else { + /* must send trailer now because eof or error */ + c->state = HTTPSTATE_SEND_DATA_TRAILER; + } + } else { + /* send it to the appropriate stream */ + if (c->stream->feed) { + /* if coming from a feed, select the right stream */ + for(i=0;istream->nb_streams;i++) { + if (c->stream->feed_streams[i] == pkt.stream_index) { + pkt.stream_index = i; + goto send_it; + } + } + } else { + send_it: + av_write_packet(&c->fmt_ctx, &pkt); + } + + av_free_packet(&pkt); + } + } + break; + default: + case HTTPSTATE_SEND_DATA_TRAILER: + /* last packet test ? */ + if (c->last_packet_sent) + return -1; + /* prepare header */ + c->fmt_ctx.format->write_trailer(&c->fmt_ctx); + c->last_packet_sent = 1; + break; + } + return 0; +} + +/* should convert the format at the same time */ +static int http_send_data(HTTPContext *c) +{ + int len, ret; + + while (c->buffer_ptr >= c->buffer_end) { + ret = http_prepare_data(c); + if (ret < 0) + return -1; + else if (ret == 0) { + break; + } else { + /* state change requested */ + return 0; + } + } + + len = write(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr); + if (len < 0) { + if (errno != EAGAIN && errno != EINTR) { + /* error : close connection */ + return -1; + } + } else { + c->buffer_ptr += len; + c->data_count += len; + } + return 0; +} + +static int http_start_receive_data(HTTPContext *c) +{ + int fd; + + if (c->stream->feed_opened) + return -1; + + /* open feed */ + fd = open(c->stream->feed_filename, O_RDWR); + if (fd < 0) + return -1; + c->feed_fd = fd; + + c->stream->feed_write_index = ffm_read_write_index(fd); + c->stream->feed_size = lseek(fd, 0, SEEK_END); + lseek(fd, 0, SEEK_SET); + + /* init buffer input */ + c->buffer_ptr = c->buffer; + c->buffer_end = c->buffer + FFM_PACKET_SIZE; + c->stream->feed_opened = 1; + return 0; +} + +static int http_receive_data(HTTPContext *c) +{ + int len; + HTTPContext *c1; + + if (c->buffer_ptr >= c->buffer_end) { + /* a packet has been received : write it in the store, except + if header */ + if (c->data_count > FFM_PACKET_SIZE) { + FFStream *feed = c->stream; + + // printf("writing pos=0x%Lx size=0x%Lx\n", feed->feed_write_index, feed->feed_size); + /* XXX: use llseek or url_seek */ + lseek(c->feed_fd, feed->feed_write_index, SEEK_SET); + write(c->feed_fd, c->buffer, FFM_PACKET_SIZE); + + feed->feed_write_index += FFM_PACKET_SIZE; + /* update file size */ + if (feed->feed_write_index > c->stream->feed_size) + feed->feed_size = feed->feed_write_index; + + /* handle wrap around if max file size reached */ + if (feed->feed_write_index >= c->stream->feed_max_size) + feed->feed_write_index = FFM_PACKET_SIZE; + + /* write index */ + ffm_write_write_index(c->feed_fd, feed->feed_write_index); + + /* wake up any waiting connections */ + for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) { + if (c1->state == HTTPSTATE_WAIT_FEED && + c1->stream->feed == c->stream->feed) { + c1->state = HTTPSTATE_SEND_DATA; + } + } + } + c->buffer_ptr = c->buffer; + } + + len = read(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr); + if (len < 0) { + if (errno != EAGAIN && errno != EINTR) { + /* error : close connection */ + goto fail; + } + } else if (len == 0) { + /* end of connection : close it */ + goto fail; + } else { + c->buffer_ptr += len; + c->data_count += len; + } + return 0; + fail: + c->stream->feed_opened = 0; + close(c->feed_fd); + return -1; +} + +/* return the stream number in the feed */ +int add_av_stream(FFStream *feed, + AVStream *st) +{ + AVStream *fst; + AVCodecContext *av, *av1; + int i; + + av = &st->codec; + for(i=0;inb_streams;i++) { + st = feed->streams[i]; + av1 = &st->codec; + if (av1->codec == av->codec && + av1->bit_rate == av->bit_rate) { + + switch(av->codec_type) { + case CODEC_TYPE_AUDIO: + if (av1->channels == av->channels && + av1->sample_rate == av->sample_rate) + goto found; + break; + case CODEC_TYPE_VIDEO: + if (av1->width == av->width && + av1->height == av->height && + av1->frame_rate == av->frame_rate && + av1->gop_size == av->gop_size) + goto found; + break; + } + } + } + + fst = av_mallocz(sizeof(AVStream)); + if (!fst) + return -1; + fst->priv_data = av_mallocz(sizeof(FeedData)); + memcpy(&fst->codec, av, sizeof(AVCodecContext)); + feed->streams[feed->nb_streams++] = fst; + return feed->nb_streams - 1; + found: + return i; +} + +/* compute the needed AVStream for each feed */ +void build_feed_streams(void) +{ + FFStream *stream, *feed; + int i; + + /* gather all streams */ + for(stream = first_stream; stream != NULL; stream = stream->next) { + feed = stream->feed; + if (feed) { + if (!stream->is_feed) { + for(i=0;inb_streams;i++) { + stream->feed_streams[i] = add_av_stream(feed, stream->streams[i]); + } + } else { + for(i=0;inb_streams;i++) { + stream->feed_streams[i] = i; + } + } + } + } + + /* create feed files if needed */ + for(feed = first_feed; feed != NULL; feed = feed->next_feed) { + int fd; + + if (!url_exist(feed->feed_filename)) { + AVFormatContext s1, *s = &s1; + + /* only write the header of the ffm file */ + if (url_fopen(&s->pb, feed->feed_filename, URL_WRONLY) < 0) { + fprintf(stderr, "Could not open output feed file '%s'\n", + feed->feed_filename); + exit(1); + } + s->format = feed->fmt; + s->nb_streams = feed->nb_streams; + for(i=0;inb_streams;i++) { + AVStream *st; + st = feed->streams[i]; + s->streams[i] = st; + } + s->format->write_header(s); + + url_fclose(&s->pb); + } + /* get feed size and write index */ + fd = open(feed->feed_filename, O_RDONLY); + if (fd < 0) { + fprintf(stderr, "Could not open output feed file '%s'\n", + feed->feed_filename); + exit(1); + } + + feed->feed_write_index = ffm_read_write_index(fd); + feed->feed_size = lseek(fd, 0, SEEK_END); + /* ensure that we do not wrap before the end of file */ + if (feed->feed_max_size < feed->feed_size) + feed->feed_max_size = feed->feed_size; + + close(fd); + } +} + +static void get_arg(char *buf, int buf_size, const char **pp) +{ + const char *p; + char *q; + int quote; + + p = *pp; + while (isspace(*p)) p++; + q = buf; + quote = 0; + if (*p == '\"' || *p == '\'') + quote = *p++; + for(;;) { + if (quote) { + if (*p == quote) + break; + } else { + if (isspace(*p)) + break; + } + if (*p == '\0') + break; + if ((q - buf) < buf_size - 1) + *q++ = *p; + p++; + } + *q = '\0'; + if (quote && *p == quote) + p++; + *pp = p; +} + +/* add a codec and set the default parameters */ +void add_codec(FFStream *stream, AVCodecContext *av) +{ + AVStream *st; + + /* compute default parameters */ + switch(av->codec_type) { + case CODEC_TYPE_AUDIO: + if (av->bit_rate == 0) + av->bit_rate = 64000; + if (av->sample_rate == 0) + av->sample_rate = 22050; + if (av->channels == 0) + av->channels = 1; + break; + case CODEC_TYPE_VIDEO: + if (av->bit_rate == 0) + av->bit_rate = 64000; + if (av->frame_rate == 0) + av->frame_rate = 5 * FRAME_RATE_BASE; + if (av->width == 0 || av->height == 0) { + av->width = 160; + av->height = 128; + } + break; + } + + st = av_mallocz(sizeof(AVStream)); + if (!st) + return; + stream->streams[stream->nb_streams++] = st; + memcpy(&st->codec, av, sizeof(AVCodecContext)); +} + +int parse_ffconfig(const char *filename) +{ + FILE *f; + char line[1024]; + char cmd[64]; + char arg[1024]; + const char *p; + int val, errors, line_num; + FFStream **last_stream, *stream; + FFStream **last_feed, *feed; + AVCodecContext audio_enc, video_enc; + int audio_id, video_id; + + f = fopen(filename, "r"); + if (!f) { + perror(filename); + return -1; + } + + errors = 0; + line_num = 0; + first_stream = NULL; + last_stream = &first_stream; + first_feed = NULL; + last_feed = &first_feed; + stream = NULL; + feed = NULL; + audio_id = CODEC_ID_NONE; + video_id = CODEC_ID_NONE; + for(;;) { + if (fgets(line, sizeof(line), f) == NULL) + break; + line_num++; + p = line; + while (isspace(*p)) + p++; + if (*p == '\0' || *p == '#') + continue; + + get_arg(cmd, sizeof(cmd), &p); + + if (!strcasecmp(cmd, "Port")) { + get_arg(arg, sizeof(arg), &p); + my_addr.sin_port = htons (atoi(arg)); + } else if (!strcasecmp(cmd, "BindAddress")) { + get_arg(arg, sizeof(arg), &p); + if (!inet_aton(arg, &my_addr.sin_addr)) { + fprintf(stderr, "%s:%d: Invalid IP address: %s\n", + filename, line_num, arg); + errors++; + } + } else if (!strcasecmp(cmd, "MaxClients")) { + get_arg(arg, sizeof(arg), &p); + val = atoi(arg); + if (val < 1 || val > HTTP_MAX_CONNECTIONS) { + fprintf(stderr, "%s:%d: Invalid MaxClients: %s\n", + filename, line_num, arg); + errors++; + } else { + nb_max_connections = val; + } + } else if (!strcasecmp(cmd, "CustomLog")) { + get_arg(logfilename, sizeof(logfilename), &p); + } else if (!strcasecmp(cmd, "next; + /* add in feed list */ + *last_feed = feed; + last_feed = &feed->next_feed; + + get_arg(feed->filename, sizeof(feed->filename), &p); + q = strrchr(feed->filename, '>'); + if (*q) + *q = '\0'; + feed->fmt = guess_format("ffm", NULL, NULL); + /* defaut feed file */ + snprintf(feed->feed_filename, sizeof(feed->feed_filename), + "/tmp/%s.ffm", feed->filename); + feed->feed_max_size = 5 * 1024 * 1024; + feed->is_feed = 1; + feed->feed = feed; /* self feeding :-) */ + } + } else if (!strcasecmp(cmd, "File")) { + if (feed) { + get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p); + } else if (stream) { + get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p); + } + } else if (!strcasecmp(cmd, "FileMaxSize")) { + if (feed) { + const char *p1; + double fsize; + + get_arg(arg, sizeof(arg), &p); + p1 = arg; + fsize = strtod(p1, (char **)&p1); + switch(toupper(*p1)) { + case 'K': + fsize *= 1024; + break; + case 'M': + fsize *= 1024 * 1024; + break; + case 'G': + fsize *= 1024 * 1024 * 1024; + break; + } + feed->feed_max_size = (INT64)fsize; + } + } else if (!strcasecmp(cmd, "")) { + if (!feed) { + fprintf(stderr, "%s:%d: No corresponding for \n", + filename, line_num); + errors++; + } + feed = NULL; + } else if (!strcasecmp(cmd, "next; + + get_arg(stream->filename, sizeof(stream->filename), &p); + q = strrchr(stream->filename, '>'); + if (*q) + *q = '\0'; + stream->fmt = guess_format(NULL, stream->filename, NULL); + memset(&audio_enc, 0, sizeof(AVCodecContext)); + memset(&video_enc, 0, sizeof(AVCodecContext)); + audio_id = CODEC_ID_NONE; + video_id = CODEC_ID_NONE; + if (stream->fmt) { + audio_id = stream->fmt->audio_codec; + video_id = stream->fmt->video_codec; + } + } + } else if (!strcasecmp(cmd, "Feed")) { + get_arg(arg, sizeof(arg), &p); + if (stream) { + FFStream *sfeed; + + sfeed = first_feed; + while (sfeed != NULL) { + if (!strcmp(sfeed->filename, arg)) + break; + sfeed = sfeed->next_feed; + } + if (!sfeed) { + fprintf(stderr, "%s:%d: feed '%s' not defined\n", + filename, line_num, arg); + } else { + stream->feed = sfeed; + } + } + } else if (!strcasecmp(cmd, "Format")) { + get_arg(arg, sizeof(arg), &p); + if (!strcmp(arg, "status")) { + stream->stream_type = STREAM_TYPE_STATUS; + stream->fmt = NULL; + } else { + stream->stream_type = STREAM_TYPE_LIVE; + stream->fmt = guess_format(arg, NULL, NULL); + if (!stream->fmt) { + fprintf(stderr, "%s:%d: Unknown Format: %s\n", + filename, line_num, arg); + errors++; + } + } + if (stream->fmt) { + audio_id = stream->fmt->audio_codec; + video_id = stream->fmt->video_codec; + } + } else if (!strcasecmp(cmd, "AudioBitRate")) { + get_arg(arg, sizeof(arg), &p); + if (stream) { + audio_enc.bit_rate = atoi(arg) * 1000; + } + } else if (!strcasecmp(cmd, "AudioChannels")) { + get_arg(arg, sizeof(arg), &p); + if (stream) { + audio_enc.channels = atoi(arg); + } + } else if (!strcasecmp(cmd, "AudioSampleRate")) { + get_arg(arg, sizeof(arg), &p); + if (stream) { + audio_enc.sample_rate = atoi(arg); + } + } else if (!strcasecmp(cmd, "VideoBitRate")) { + get_arg(arg, sizeof(arg), &p); + if (stream) { + video_enc.bit_rate = atoi(arg) * 1000; + } + } else if (!strcasecmp(cmd, "VideoSize")) { + get_arg(arg, sizeof(arg), &p); + if (stream) { + parse_image_size(&video_enc.width, &video_enc.height, arg); + if ((video_enc.width % 16) != 0 || + (video_enc.height % 16) != 0) { + fprintf(stderr, "%s:%d: Image size must be a multiple of 16\n", + filename, line_num); + errors++; + } + } + } else if (!strcasecmp(cmd, "VideoFrameRate")) { + get_arg(arg, sizeof(arg), &p); + if (stream) { + video_enc.frame_rate = (int)(strtod(arg, NULL) * FRAME_RATE_BASE); + } + } else if (!strcasecmp(cmd, "VideoGopSize")) { + get_arg(arg, sizeof(arg), &p); + if (stream) { + video_enc.gop_size = atoi(arg); + } + } else if (!strcasecmp(cmd, "VideoIntraOnly")) { + if (stream) { + video_enc.gop_size = 1; + } + } else if (!strcasecmp(cmd, "NoVideo")) { + video_id = CODEC_ID_NONE; + } else if (!strcasecmp(cmd, "NoAudio")) { + audio_id = CODEC_ID_NONE; + } else if (!strcasecmp(cmd, "")) { + if (!stream) { + fprintf(stderr, "%s:%d: No corresponding for \n", + filename, line_num); + errors++; + } + if (stream->feed && stream->fmt && strcmp(stream->fmt->name, "ffm") != 0) { + if (audio_id != CODEC_ID_NONE) { + audio_enc.codec_type = CODEC_TYPE_AUDIO; + audio_enc.codec_id = audio_id; + add_codec(stream, &audio_enc); + } + if (video_id != CODEC_ID_NONE) { + video_enc.codec_type = CODEC_TYPE_VIDEO; + video_enc.codec_id = video_id; + add_codec(stream, &video_enc); + } + } + stream = NULL; + } else { + fprintf(stderr, "%s:%d: Incorrect keyword: '%s'\n", + filename, line_num, cmd); + errors++; + } + } + + fclose(f); + if (errors) + return -1; + else + return 0; +} + + +void *http_server_thread(void *arg) +{ + http_server(my_addr); + return NULL; +} + +#if 0 +static void write_packet(FFCodec *ffenc, + UINT8 *buf, int size) +{ + PacketHeader hdr; + AVCodecContext *enc = &ffenc->enc; + UINT8 *wptr; + mk_header(&hdr, enc, size); + wptr = http_fifo.wptr; + fifo_write(&http_fifo, (UINT8 *)&hdr, sizeof(hdr), &wptr); + fifo_write(&http_fifo, buf, size, &wptr); + /* atomic modification of wptr */ + http_fifo.wptr = wptr; + ffenc->data_count += size; + ffenc->avg_frame_size = ffenc->avg_frame_size * AVG_COEF + size * (1.0 - AVG_COEF); +} +#endif + +void help(void) +{ + printf("ffserver version " FFMPEG_VERSION ", Copyright (c) 2000,2001 Gerard Lantau\n" + "usage: ffserver [-L] [-h] [-f configfile]\n" + "Hyper fast multi format Audio/Video streaming server\n" + "\n" + "-L : print the LICENCE\n" + "-h : this help\n" + "-f configfile : use configfile instead of /etc/ffserver.conf\n" + ); +} + +void licence(void) +{ + printf( + "ffserver version " FFMPEG_VERSION "\n" + "Copyright (c) 2000,2001 Gerard Lantau\n" + "This program is free software; you can redistribute it and/or modify\n" + "it under the terms of the GNU General Public License as published by\n" + "the Free Software Foundation; either version 2 of the License, or\n" + "(at your option) any later version.\n" + "\n" + "This program is distributed in the hope that it will be useful,\n" + "but WITHOUT ANY WARRANTY; without even the implied warranty of\n" + "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" + "GNU General Public License for more details.\n" + "\n" + "You should have received a copy of the GNU General Public License\n" + "along with this program; if not, write to the Free Software\n" + "Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n" + ); +} + +int main(int argc, char **argv) +{ + const char *config_filename; + int c; + + register_all(); + + config_filename = "/etc/ffserver.conf"; + + for(;;) { + c = getopt_long_only(argc, argv, "Lh?f:", NULL, NULL); + if (c == -1) + break; + switch(c) { + case 'L': + licence(); + exit(1); + case '?': + case 'h': + help(); + exit(1); + case 'f': + config_filename = optarg; + break; + default: + exit(2); + } + } + + /* address on which the server will handle connections */ + my_addr.sin_family = AF_INET; + my_addr.sin_port = htons (8080); + my_addr.sin_addr.s_addr = htonl (INADDR_ANY); + nb_max_connections = 5; + first_stream = NULL; + logfilename[0] = '\0'; + + if (parse_ffconfig(config_filename) < 0) { + fprintf(stderr, "Incorrect config file - exiting.\n"); + exit(1); + } + + build_feed_streams(); + + /* signal init */ + signal(SIGPIPE, SIG_IGN); + + /* open log file if needed */ + if (logfilename[0] != '\0') { + if (!strcmp(logfilename, "-")) + logfile = stdout; + else + logfile = fopen(logfilename, "w"); + } + + if (http_server(my_addr) < 0) { + fprintf(stderr, "Could start http server\n"); + exit(1); + } + + return 0; +} diff --git a/libav/Makefile b/libav/Makefile new file mode 100644 index 0000000000..08d507a7f2 --- /dev/null +++ b/libav/Makefile @@ -0,0 +1,22 @@ +include ../config.mk +CFLAGS= -O2 -Wall -g -I../libavcodec + +OBJS= rm.o mpeg.o asf.o avienc.o jpegenc.o swf.o wav.o raw.o \ + avidec.o ffm.o \ + avio.o aviobuf.o utils.o \ + udp.o http.o file.o grab.o audio.o img.o + +LIB= libav.a + +all: $(LIB) + +$(LIB): $(OBJS) + rm -f $@ + $(AR) rcs $@ $(OBJS) + +%.o: %.c + $(CC) $(CFLAGS) -c -o $@ $< + +clean: + rm -f *.o *~ *.a +