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correctly interleave packets during encoding

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dts/pts fixed for streamcopy
dont use coded_frame->key_frame hack in muxers, use AVPacket.flags instead

Originally committed as revision 3171 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-05-29 18:50:31 +00:00
parent 5751815562
commit 3c895fc098
7 changed files with 164 additions and 110 deletions
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18
ffmpeg.c
View File

@ -458,7 +458,7 @@ static void do_audio_out(AVFormatContext *s,
if(enc->coded_frame)
pkt.pts= enc->coded_frame->pts;
pkt.flags |= PKT_FLAG_KEY;
av_write_frame(s, &pkt);
av_interleaved_write_frame(s, &pkt);
}
} else {
AVPacket pkt;
@ -484,7 +484,7 @@ static void do_audio_out(AVFormatContext *s,
if(enc->coded_frame)
pkt.pts= enc->coded_frame->pts;
pkt.flags |= PKT_FLAG_KEY;
av_write_frame(s, &pkt);
av_interleaved_write_frame(s, &pkt);
}
}
@ -771,7 +771,7 @@ static void do_video_out(AVFormatContext *s,
if(dec->coded_frame && dec->coded_frame->key_frame)
pkt.flags |= PKT_FLAG_KEY;
av_write_frame(s, &pkt);
av_interleaved_write_frame(s, &pkt);
enc->coded_frame = old_frame;
} else {
AVFrame big_picture;
@ -807,7 +807,7 @@ static void do_video_out(AVFormatContext *s,
pkt.pts= enc->coded_frame->pts;
if(enc->coded_frame && enc->coded_frame->key_frame)
pkt.flags |= PKT_FLAG_KEY;
av_write_frame(s, &pkt);
av_interleaved_write_frame(s, &pkt);
*frame_size = ret;
//fprintf(stderr,"\nFrame: %3d %3d size: %5d type: %d",
// enc->frame_number-1, enc->real_pict_num, ret,
@ -1165,10 +1165,11 @@ static int output_packet(AVInputStream *ist, int ist_index,
opkt.stream_index= ost->index;
opkt.data= data_buf;
opkt.size= data_size;
opkt.pts= ist->pts; //FIXME dts vs. pts
opkt.pts= pkt->pts; //FIXME ist->pts?
opkt.dts= pkt->dts;
opkt.flags= pkt->flags;
av_write_frame(os, &opkt);
av_interleaved_write_frame(os, &opkt);
ost->st->codec.frame_number++;
ost->frame_number++;
}
@ -1633,7 +1634,10 @@ static int av_encode(AVFormatContext **output_files,
ost = ost_table[i];
os = output_files[ost->file_index];
ist = ist_table[ost->source_index];
pts = (double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den;
if(ost->st->codec.codec_type == CODEC_TYPE_VIDEO)
pts = (double)ost->sync_opts * ost->st->codec.frame_rate_base / ost->st->codec.frame_rate;
else
pts = (double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den;
if (!file_table[ist->file_index].eof_reached &&
pts < pts_min) {
pts_min = pts;

12
libavformat/asf-enc.c
View File

@ -586,7 +586,8 @@ static void put_payload_header(
int presentation_time,
int m_obj_size,
int m_obj_offset,
int payload_len
int payload_len,
int flags
)
{
ASFContext *asf = s->priv_data;
@ -594,7 +595,7 @@ static void put_payload_header(
int val;
val = stream->num;
if (s->streams[val - 1]->codec.coded_frame->key_frame)
if (flags & PKT_FLAG_KEY)
val |= ASF_PL_FLAG_KEY_FRAME;
put_byte(pb, val);
@ -621,7 +622,8 @@ static void put_frame(
ASFStream *stream,
int timestamp,
const uint8_t *buf,
int m_obj_size
int m_obj_size,
int flags
)
{
ASFContext *asf = s->priv_data;
@ -662,7 +664,7 @@ static void put_frame(
else if (payload_len == (frag_len1 - 1))
payload_len = frag_len1 - 2; //additional byte need to put padding length
put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len);
put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len, flags);
put_buffer(&asf->pb, buf, payload_len);
if (asf->multi_payloads_present)
@ -706,7 +708,7 @@ static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
if (duration > asf->duration)
asf->duration = duration;
put_frame(s, stream, pkt->pts, pkt->data, pkt->size);
put_frame(s, stream, pkt->pts, pkt->data, pkt->size, pkt->flags);
return 0;
}

3
libavformat/avformat.h
View File

@ -5,7 +5,7 @@
extern "C" {
#endif
#define LIBAVFORMAT_BUILD 4615
#define LIBAVFORMAT_BUILD 4616
#define LIBAVFORMAT_VERSION_INT FFMPEG_VERSION_INT
#define LIBAVFORMAT_VERSION FFMPEG_VERSION
@ -557,6 +557,7 @@ int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts
int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
int av_write_header(AVFormatContext *s);
int av_write_frame(AVFormatContext *s, AVPacket *pkt);
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
int av_write_trailer(AVFormatContext *s);

50
libavformat/mpeg.c
View File

@ -803,51 +803,6 @@ static void put_vcd_padding_sector(AVFormatContext *ctx)
s->packet_number++;
}
/* XXX: move that to upper layer */
/* XXX: we assume that there are always 'max_b_frames' between
reference frames. A better solution would be to use the AVFrame pts
field */
static void compute_pts_dts(AVStream *st, int64_t *ppts, int64_t *pdts,
int64_t timestamp)
{
int frame_delay;
int64_t pts, dts;
if (st->codec.codec_type == CODEC_TYPE_VIDEO &&
st->codec.max_b_frames != 0) {
frame_delay = (st->codec.frame_rate_base * 90000LL) /
st->codec.frame_rate;
if (timestamp == 0) {
/* specific case for first frame : DTS just before */
pts = timestamp;
dts = timestamp - frame_delay;
} else {
timestamp -= frame_delay;
if (st->codec.coded_frame->pict_type == FF_B_TYPE) {
/* B frames has identical pts/dts */
pts = timestamp;
dts = timestamp;
} else {
/* a reference frame has a pts equal to the dts of the
_next_ one */
dts = timestamp;
pts = timestamp + (st->codec.max_b_frames + 1) * frame_delay;
}
}
#if 1
av_log(&st->codec, AV_LOG_DEBUG, "pts=%0.3f dts=%0.3f pict_type=%c\n",
pts / 90000.0, dts / 90000.0,
av_get_pict_type_char(st->codec.coded_frame->pict_type));
#endif
} else {
pts = timestamp;
dts = timestamp;
}
*ppts = pts & ((1LL << 33) - 1);
*pdts = dts & ((1LL << 33) - 1);
}
static int64_t update_scr(AVFormatContext *ctx,int stream_index,int64_t pts)
{
MpegMuxContext *s = ctx->priv_data;
@ -923,9 +878,6 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
int64_t pts, dts, new_start_pts, new_start_dts;
int len, avail_size;
//XXX/FIXME this is and always was broken
// compute_pts_dts(st, &pts, &dts, pkt->pts);
pts= pkt->pts;
dts= pkt->dts;
@ -1395,7 +1347,7 @@ static int mpegps_read_packet(AVFormatContext *s,
pkt->dts = dts;
pkt->stream_index = st->index;
#if 0
printf("%d: pts=%0.3f dts=%0.3f\n",
av_log(s, AV_LOG_DEBUG, "%d: pts=%0.3f dts=%0.3f\n",
pkt->stream_index, pkt->pts / 90000.0, pkt->dts / 90000.0);
#endif
return 0;

12
libavformat/rm.c
View File

@ -324,7 +324,7 @@ static int rm_write_header(AVFormatContext *s)
return 0;
}
static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size)
static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size, int flags)
{
uint8_t *buf1;
RMContext *rm = s->priv_data;
@ -335,7 +335,7 @@ static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size)
/* XXX: suppress this malloc */
buf1= (uint8_t*) av_malloc( size * sizeof(uint8_t) );
write_packet_header(s, stream, size, stream->enc->coded_frame->key_frame);
write_packet_header(s, stream, size, !!(flags & PKT_FLAG_KEY));
/* for AC3, the words seems to be reversed */
for(i=0;i<size;i+=2) {
@ -349,12 +349,12 @@ static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size)
return 0;
}
static int rm_write_video(AVFormatContext *s, const uint8_t *buf, int size)
static int rm_write_video(AVFormatContext *s, const uint8_t *buf, int size, int flags)
{
RMContext *rm = s->priv_data;
ByteIOContext *pb = &s->pb;
StreamInfo *stream = rm->video_stream;
int key_frame = stream->enc->coded_frame->key_frame;
int key_frame = !!(flags & PKT_FLAG_KEY);
/* XXX: this is incorrect: should be a parameter */
@ -393,9 +393,9 @@ static int rm_write_packet(AVFormatContext *s, AVPacket *pkt)
{
if (s->streams[pkt->stream_index]->codec.codec_type ==
CODEC_TYPE_AUDIO)
return rm_write_audio(s, pkt->data, pkt->size);
return rm_write_audio(s, pkt->data, pkt->size, pkt->flags);
else
return rm_write_video(s, pkt->data, pkt->size);
return rm_write_video(s, pkt->data, pkt->size, pkt->flags);
}
static int rm_write_trailer(AVFormatContext *s)

173
libavformat/utils.c
View File

@ -528,8 +528,7 @@ static int get_audio_frame_size(AVCodecContext *enc, int size)
/* return the frame duration in seconds, return 0 if not available */
static void compute_frame_duration(int *pnum, int *pden,
AVFormatContext *s, AVStream *st,
static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
AVCodecParserContext *pc, AVPacket *pkt)
{
int frame_size;
@ -577,7 +576,7 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
}
if (pkt->duration == 0) {
compute_frame_duration(&num, &den, s, st, pc, pkt);
compute_frame_duration(&num, &den, st, pc, pkt);
if (den && num) {
pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num);
}
@ -604,7 +603,7 @@ static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
else st->cur_dts = 0;
}
// av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%lld, dts:%lld cur_dts:%lld\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts);
// av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%lld, dts:%lld cur_dts:%lld st:%d pc:%p\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts, pkt->stream_index, pc);
/* interpolate PTS and DTS if they are not present */
if (presentation_delayed) {
/* DTS = decompression time stamp */
@ -1865,28 +1864,12 @@ int av_write_header(AVFormatContext *s)
return 0;
}
/**
* Write a packet to an output media file. The packet shall contain
* one audio or video frame.
*
* @param s media file handle
* @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...
* @return < 0 if error, = 0 if OK, 1 if end of stream wanted.
*/
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
{
AVStream *st;
int64_t pts_mask;
int ret, frame_size;
int b_frames;
//FIXME merge with compute_pkt_fields
static void compute_pkt_fields2(AVStream *st, AVPacket *pkt){
int b_frames = FFMAX(st->codec.has_b_frames, st->codec.max_b_frames);
int num, den, frame_size;
if(pkt->stream_index<0)
return -1;
st = s->streams[pkt->stream_index];
b_frames = FFMAX(st->codec.has_b_frames, st->codec.max_b_frames);
// av_log(s, AV_LOG_DEBUG, "av_write_frame: pts:%lld dts:%lld cur_dts:%lld b:%d size:%d\n", pkt->pts, pkt->dts, st->cur_dts, b_frames, pkt->size);
// av_log(NULL, AV_LOG_DEBUG, "av_write_frame: pts:%lld dts:%lld cur_dts:%lld b:%d size:%d st:%d\n", pkt->pts, pkt->dts, st->cur_dts, b_frames, pkt->size, pkt->stream_index);
/* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
return -1;*/
@ -1898,6 +1881,12 @@ int av_write_frame(AVFormatContext *s, AVPacket *pkt)
/* duration field */
pkt->duration = av_rescale(pkt->duration, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
if (pkt->duration == 0) {
compute_frame_duration(&num, &den, st, NULL, pkt);
if (den && num) {
pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num);
}
}
//XXX/FIXME this is a temporary hack until all encoders output pts
if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !b_frames){
@ -1910,9 +1899,7 @@ int av_write_frame(AVFormatContext *s, AVPacket *pkt)
if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE){
if(b_frames){
if(st->last_IP_pts == AV_NOPTS_VALUE){
st->last_IP_pts= -av_rescale(1,
st->codec.frame_rate_base*(int64_t)st->time_base.den,
st->codec.frame_rate *(int64_t)st->time_base.num);
st->last_IP_pts= -pkt->duration;
}
if(st->last_IP_pts < pkt->pts){
pkt->dts= st->last_IP_pts;
@ -1923,19 +1910,10 @@ int av_write_frame(AVFormatContext *s, AVPacket *pkt)
pkt->dts= pkt->pts;
}
// av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%lld dts2:%lld\n", pkt->pts, pkt->dts);
// av_log(NULL, AV_LOG_DEBUG, "av_write_frame: pts2:%lld dts2:%lld\n", pkt->pts, pkt->dts);
st->cur_dts= pkt->dts;
st->pts.val= pkt->dts;
pts_mask = (2LL << (st->pts_wrap_bits-1)) - 1;
pkt->pts &= pts_mask;
pkt->dts &= pts_mask;
ret = s->oformat->write_packet(s, pkt);
if (ret < 0)
return ret;
/* update pts */
switch (st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
@ -1953,7 +1931,106 @@ int av_write_frame(AVFormatContext *s, AVPacket *pkt)
default:
break;
}
return ret;
}
static void truncate_ts(AVStream *st, AVPacket *pkt){
int64_t pts_mask = (2LL << (st->pts_wrap_bits-1)) - 1;
if(pkt->dts < 0)
pkt->dts= 0; //this happens for low_delay=0 and b frames, FIXME, needs further invstigation about what we should do here
pkt->pts &= pts_mask;
pkt->dts &= pts_mask;
}
/**
* Write a packet to an output media file. The packet shall contain
* one audio or video frame.
*
* @param s media file handle
* @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...
* @return < 0 if error, = 0 if OK, 1 if end of stream wanted.
*/
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
{
compute_pkt_fields2(s->streams[pkt->stream_index], pkt);
truncate_ts(s->streams[pkt->stream_index], pkt);
return s->oformat->write_packet(s, pkt);
}
/**
* Writes a packet to an output media file ensuring correct interleaving.
* The packet shall contain one audio or video frame.
* If the packets are already correctly interleaved the application should
* call av_write_frame() instead as its slightly faster, its also important
* to keep in mind that non interlaved input will need huge amounts
* of memory to interleave with this, so its prefereable to interleave at the
* demuxer level
*
* @param s media file handle
* @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...
* @return < 0 if error, = 0 if OK, 1 if end of stream wanted.
*/
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
AVPacketList *pktl, **next_point, *this_pktl;
int stream_count=0;
int streams[MAX_STREAMS];
AVStream *st= s->streams[ pkt->stream_index];
compute_pkt_fields2(st, pkt);
if(pkt->dts == AV_NOPTS_VALUE)
return -1;
assert(pkt->destruct != av_destruct_packet); //FIXME
this_pktl = av_mallocz(sizeof(AVPacketList));
this_pktl->pkt= *pkt;
av_dup_packet(&this_pktl->pkt);
next_point = &s->packet_buffer;
while(*next_point){
AVStream *st2= s->streams[ (*next_point)->pkt.stream_index];
int64_t left= st2->time_base.num * st ->time_base.den;
int64_t right= st ->time_base.num * st2->time_base.den;
if((*next_point)->pkt.dts * left > pkt->dts * right) //FIXME this can overflow
break;
next_point= &(*next_point)->next;
}
this_pktl->next= *next_point;
*next_point= this_pktl;
memset(streams, 0, sizeof(streams));
pktl= s->packet_buffer;
while(pktl){
//av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
if(streams[ pktl->pkt.stream_index ] == 0)
stream_count++;
streams[ pktl->pkt.stream_index ]++;
pktl= pktl->next;
}
while(s->nb_streams == stream_count){
int ret;
pktl= s->packet_buffer;
//av_log(s, AV_LOG_DEBUG, "write st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
truncate_ts(s->streams[pktl->pkt.stream_index], &pktl->pkt);
ret= s->oformat->write_packet(s, &pktl->pkt);
s->packet_buffer= pktl->next;
if((--streams[ pktl->pkt.stream_index ]) == 0)
stream_count--;
av_free_packet(&pktl->pkt);
av_freep(&pktl);
if(ret<0)
return ret;
}
return 0;
}
/**
@ -1965,6 +2042,24 @@ int av_write_frame(AVFormatContext *s, AVPacket *pkt)
int av_write_trailer(AVFormatContext *s)
{
int ret;
while(s->packet_buffer){
int ret;
AVPacketList *pktl= s->packet_buffer;
//av_log(s, AV_LOG_DEBUG, "write_trailer st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
truncate_ts(s->streams[pktl->pkt.stream_index], &pktl->pkt);
ret= s->oformat->write_packet(s, &pktl->pkt);
s->packet_buffer= pktl->next;
av_free_packet(&pktl->pkt);
av_freep(&pktl);
if(ret<0)
return ret;
}
ret = s->oformat->write_trailer(s);
av_freep(&s->priv_data);
return ret;

6
tests/libav.regression.ref
View File

@ -7,9 +7,9 @@ a09d8460b207c4a67a26842c70fbb060 *./data/b-libav.asf
./data/b-libav.asf CRC=4b9f25a1
be8eb1b5705c8105e4727258e448cb24 *./data/b-libav.rm
356950 ./data/b-libav.rm
e826aa1637ff15144ab484c1efca7fe7 *./data/b-libav.mpg
382976 ./data/b-libav.mpg
./data/b-libav.mpg CRC=eda0e29e
4edcd572ffc30b7a7b95b6a38f157b20 *./data/b-libav.mpg
385024 ./data/b-libav.mpg
./data/b-libav.mpg CRC=8b9ae29e
01a4130e776b8955fa99e477113e94fd *./data/b-libav.swf
41743 ./data/b-libav.swf
./data/b-libav.swf CRC=eaaf4640