mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2025-01-26 06:05:06 +00:00
moved packet output to a separate function - added the frame buffered by the decoder at EOF, if any
Originally committed as revision 2615 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard
parent
6e45e92856
commit
a700a6ae8f
379
ffmpeg.c
379
ffmpeg.c
@ -791,6 +791,197 @@ static void print_report(AVFormatContext **output_files,
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fprintf(stderr, "\n");
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}
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/* pkt = NULL means EOF (needed to flush decoder buffers) */
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static int output_packet(AVInputStream *ist, int ist_index,
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AVOutputStream **ost_table, int nb_ostreams,
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AVPacket *pkt)
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{
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AVFormatContext *os;
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AVOutputStream *ost;
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uint8_t *ptr;
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int len, ret, i;
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uint8_t *data_buf;
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int data_size, got_picture;
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AVFrame picture;
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short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2];
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void *buffer_to_free;
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if (pkt && pkt->pts != AV_NOPTS_VALUE) {
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ist->pts = pkt->pts;
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} else {
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ist->pts = ist->next_pts;
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}
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if (pkt == NULL) {
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/* EOF handling */
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ptr = NULL;
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len = 0;
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goto handle_eof;
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}
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len = pkt->size;
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ptr = pkt->data;
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while (len > 0) {
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handle_eof:
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/* decode the packet if needed */
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data_buf = NULL; /* fail safe */
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data_size = 0;
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if (ist->decoding_needed) {
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switch(ist->st->codec.codec_type) {
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case CODEC_TYPE_AUDIO:
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/* XXX: could avoid copy if PCM 16 bits with same
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endianness as CPU */
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ret = avcodec_decode_audio(&ist->st->codec, samples, &data_size,
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ptr, len);
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if (ret < 0)
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goto fail_decode;
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ptr += ret;
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len -= ret;
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/* Some bug in mpeg audio decoder gives */
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/* data_size < 0, it seems they are overflows */
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if (data_size <= 0) {
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/* no audio frame */
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continue;
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}
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data_buf = (uint8_t *)samples;
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ist->next_pts += ((int64_t)AV_TIME_BASE * data_size) /
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(2 * ist->st->codec.channels);
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break;
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case CODEC_TYPE_VIDEO:
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data_size = (ist->st->codec.width * ist->st->codec.height * 3) / 2;
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/* XXX: allocate picture correctly */
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memset(&picture, 0, sizeof(picture));
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ret = avcodec_decode_video(&ist->st->codec,
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&picture, &got_picture, ptr, len);
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ist->st->quality= picture.quality;
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if (ret < 0)
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goto fail_decode;
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if (!got_picture) {
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/* no picture yet */
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goto discard_packet;
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}
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if (ist->st->codec.frame_rate_base != 0) {
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ist->next_pts += ((int64_t)AV_TIME_BASE *
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ist->st->codec.frame_rate_base) /
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ist->st->codec.frame_rate;
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}
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len = 0;
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break;
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default:
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goto fail_decode;
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}
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} else {
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data_buf = ptr;
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data_size = len;
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ret = len;
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len = 0;
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}
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buffer_to_free = NULL;
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if (ist->st->codec.codec_type == CODEC_TYPE_VIDEO) {
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pre_process_video_frame(ist, (AVPicture *)&picture,
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&buffer_to_free);
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}
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/* frame rate emulation */
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if (ist->st->codec.rate_emu) {
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int64_t pts = av_rescale((int64_t) ist->frame * ist->st->codec.frame_rate_base, 1000000, ist->st->codec.frame_rate);
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int64_t now = av_gettime() - ist->start;
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if (pts > now)
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usleep(pts - now);
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ist->frame++;
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}
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#if 0
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/* mpeg PTS deordering : if it is a P or I frame, the PTS
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is the one of the next displayed one */
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/* XXX: add mpeg4 too ? */
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if (ist->st->codec.codec_id == CODEC_ID_MPEG1VIDEO) {
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if (ist->st->codec.pict_type != B_TYPE) {
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int64_t tmp;
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tmp = ist->last_ip_pts;
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ist->last_ip_pts = ist->frac_pts.val;
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ist->frac_pts.val = tmp;
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}
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}
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#endif
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/* if output time reached then transcode raw format,
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encode packets and output them */
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if (start_time == 0 || ist->pts >= start_time)
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for(i=0;i<nb_ostreams;i++) {
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int frame_size;
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ost = ost_table[i];
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if (ost->source_index == ist_index) {
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os = output_files[ost->file_index];
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#if 0
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printf("%d: got pts=%0.3f %0.3f\n", i,
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(double)pkt->pts / AV_TIME_BASE,
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((double)ist->pts / AV_TIME_BASE) -
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((double)ost->st->pts.val * os->pts_num / os->pts_den));
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#endif
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/* set the input output pts pairs */
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ost->sync_ipts = (double)ist->pts / AV_TIME_BASE;
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/* XXX: take into account the various fifos,
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in particular for audio */
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ost->sync_opts = ost->st->pts.val;
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//printf("ipts=%lld sync_ipts=%f sync_opts=%lld pts.val=%lld pkt->pts=%lld\n", ist->pts, ost->sync_ipts, ost->sync_opts, ost->st->pts.val, pkt->pts);
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if (ost->encoding_needed) {
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switch(ost->st->codec.codec_type) {
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case CODEC_TYPE_AUDIO:
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do_audio_out(os, ost, ist, data_buf, data_size);
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break;
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case CODEC_TYPE_VIDEO:
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/* find an audio stream for synchro */
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{
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int i;
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AVOutputStream *audio_sync, *ost1;
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audio_sync = NULL;
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for(i=0;i<nb_ostreams;i++) {
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ost1 = ost_table[i];
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if (ost1->file_index == ost->file_index &&
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ost1->st->codec.codec_type == CODEC_TYPE_AUDIO) {
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audio_sync = ost1;
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break;
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}
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}
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do_video_out(os, ost, ist, &picture, &frame_size, audio_sync);
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if (do_vstats && frame_size)
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do_video_stats(os, ost, frame_size);
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}
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break;
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default:
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av_abort();
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}
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} else {
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AVFrame avframe;
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/* no reencoding needed : output the packet directly */
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/* force the input stream PTS */
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memset(&avframe, 0, sizeof(AVFrame));
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ost->st->codec.coded_frame= &avframe;
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avframe.key_frame = pkt->flags & PKT_FLAG_KEY;
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av_write_frame(os, ost->index, data_buf, data_size);
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ost->st->codec.frame_number++;
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ost->frame_number++;
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}
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}
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}
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av_free(buffer_to_free);
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}
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discard_packet:
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return 0;
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fail_decode:
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return -1;
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}
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/*
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* The following code is the main loop of the file converter
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*/
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@ -1191,13 +1382,6 @@ static int av_encode(AVFormatContext **output_files,
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for(; received_sigterm == 0;) {
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int file_index, ist_index;
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AVPacket pkt;
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uint8_t *ptr;
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int len;
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uint8_t *data_buf;
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int data_size, got_picture;
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AVFrame picture;
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short samples[AVCODEC_MAX_AUDIO_FRAME_SIZE / 2];
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void *buffer_to_free;
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double pts_min;
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redo:
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@ -1258,179 +1442,28 @@ static int av_encode(AVFormatContext **output_files,
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goto discard_packet;
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//fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
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if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
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fprintf(stderr, "Error while decoding stream #%d.%d\n",
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ist->file_index, ist->index);
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av_free_packet(&pkt);
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goto redo;
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}
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if (pkt.pts != AV_NOPTS_VALUE) {
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ist->pts = pkt.pts;
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} else {
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ist->pts = ist->next_pts;
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}
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len = pkt.size;
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ptr = pkt.data;
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while (len > 0) {
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/* decode the packet if needed */
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data_buf = NULL; /* fail safe */
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data_size = 0;
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if (ist->decoding_needed) {
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switch(ist->st->codec.codec_type) {
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case CODEC_TYPE_AUDIO:
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/* XXX: could avoid copy if PCM 16 bits with same
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endianness as CPU */
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ret = avcodec_decode_audio(&ist->st->codec, samples, &data_size,
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ptr, len);
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if (ret < 0)
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goto fail_decode;
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ptr += ret;
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len -= ret;
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/* Some bug in mpeg audio decoder gives */
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/* data_size < 0, it seems they are overflows */
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if (data_size <= 0) {
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/* no audio frame */
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continue;
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}
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data_buf = (uint8_t *)samples;
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ist->next_pts += ((int64_t)AV_TIME_BASE * data_size) /
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(2 * ist->st->codec.channels);
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break;
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case CODEC_TYPE_VIDEO:
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data_size = (ist->st->codec.width * ist->st->codec.height * 3) / 2;
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/* XXX: allocate picture correctly */
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memset(&picture, 0, sizeof(picture));
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ret = avcodec_decode_video(&ist->st->codec,
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&picture, &got_picture, ptr, len);
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ist->st->quality= picture.quality;
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if (ret < 0) {
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fail_decode:
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fprintf(stderr, "Error while decoding stream #%d.%d\n",
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ist->file_index, ist->index);
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av_free_packet(&pkt);
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goto redo;
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}
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if (!got_picture) {
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/* no picture yet */
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goto discard_packet;
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}
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if (ist->st->codec.frame_rate_base != 0) {
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ist->next_pts += ((int64_t)AV_TIME_BASE *
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ist->st->codec.frame_rate_base) /
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ist->st->codec.frame_rate;
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}
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len = 0;
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break;
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default:
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goto fail_decode;
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}
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} else {
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data_buf = ptr;
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data_size = len;
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ret = len;
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len = 0;
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}
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buffer_to_free = NULL;
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if (ist->st->codec.codec_type == CODEC_TYPE_VIDEO) {
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pre_process_video_frame(ist, (AVPicture *)&picture,
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&buffer_to_free);
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}
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/* frame rate emulation */
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if (ist->st->codec.rate_emu) {
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int64_t pts = av_rescale((int64_t) ist->frame * ist->st->codec.frame_rate_base, 1000000, ist->st->codec.frame_rate);
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int64_t now = av_gettime() - ist->start;
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if (pts > now)
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usleep(pts - now);
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ist->frame++;
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}
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#if 0
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/* mpeg PTS deordering : if it is a P or I frame, the PTS
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is the one of the next displayed one */
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/* XXX: add mpeg4 too ? */
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if (ist->st->codec.codec_id == CODEC_ID_MPEG1VIDEO) {
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if (ist->st->codec.pict_type != B_TYPE) {
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int64_t tmp;
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tmp = ist->last_ip_pts;
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ist->last_ip_pts = ist->frac_pts.val;
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ist->frac_pts.val = tmp;
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}
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}
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#endif
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/* if output time reached then transcode raw format,
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encode packets and output them */
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if (start_time == 0 || ist->pts >= start_time)
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for(i=0;i<nb_ostreams;i++) {
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int frame_size;
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ost = ost_table[i];
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if (ost->source_index == ist_index) {
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os = output_files[ost->file_index];
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#if 0
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printf("%d: got pts=%0.3f %0.3f\n", i,
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(double)pkt.pts / AV_TIME_BASE,
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((double)ist->pts / AV_TIME_BASE) -
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((double)ost->st->pts.val * os->pts_num / os->pts_den));
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#endif
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/* set the input output pts pairs */
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ost->sync_ipts = (double)ist->pts / AV_TIME_BASE;
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/* XXX: take into account the various fifos,
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in particular for audio */
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ost->sync_opts = ost->st->pts.val;
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//printf("ipts=%lld sync_ipts=%f sync_opts=%lld pts.val=%lld pkt.pts=%lld\n", ist->pts, ost->sync_ipts, ost->sync_opts, ost->st->pts.val, pkt.pts);
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if (ost->encoding_needed) {
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switch(ost->st->codec.codec_type) {
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case CODEC_TYPE_AUDIO:
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do_audio_out(os, ost, ist, data_buf, data_size);
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break;
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case CODEC_TYPE_VIDEO:
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/* find an audio stream for synchro */
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{
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int i;
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AVOutputStream *audio_sync, *ost1;
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audio_sync = NULL;
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for(i=0;i<nb_ostreams;i++) {
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ost1 = ost_table[i];
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if (ost1->file_index == ost->file_index &&
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ost1->st->codec.codec_type == CODEC_TYPE_AUDIO) {
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audio_sync = ost1;
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break;
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}
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}
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do_video_out(os, ost, ist, &picture, &frame_size, audio_sync);
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if (do_vstats && frame_size)
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do_video_stats(os, ost, frame_size);
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}
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break;
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default:
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av_abort();
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}
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} else {
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AVFrame avframe;
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/* no reencoding needed : output the packet directly */
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/* force the input stream PTS */
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memset(&avframe, 0, sizeof(AVFrame));
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ost->st->codec.coded_frame= &avframe;
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avframe.key_frame = pkt.flags & PKT_FLAG_KEY;
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av_write_frame(os, ost->index, data_buf, data_size);
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ost->st->codec.frame_number++;
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ost->frame_number++;
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}
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}
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}
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av_free(buffer_to_free);
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}
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discard_packet:
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av_free_packet(&pkt);
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/* dump report by using the output first video and audio streams */
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print_report(output_files, ost_table, nb_ostreams, 0);
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}
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/* at the end of stream, we must flush the decoder buffers */
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for(i=0;i<nb_istreams;i++) {
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ist = ist_table[i];
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if (ist->decoding_needed) {
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output_packet(ist, i, ost_table, nb_ostreams, NULL);
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}
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}
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term_exit();
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/* dump report by using the first video and audio streams */
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