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Fix stream copy & transcoding one stream at the same time. 

Fixes issue1660.

Originally committed as revision 21042 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-01-07 01:15:16 +00:00
parent 9f907d853f
commit 036c1382a7
1 changed files with 17 additions and 15 deletions
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32
ffmpeg.c
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@ -1299,8 +1299,8 @@ static int output_packet(AVInputStream *ist, int ist_index,
//while we have more to decode or while the decoder did output something on EOF
while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
uint8_t *data_buf;
int data_size;
uint8_t *data_buf, *decoded_data_buf;
int data_size, decoded_data_size;
handle_eof:
ist->pts= ist->next_pts;
@ -1309,8 +1309,10 @@ static int output_packet(AVInputStream *ist, int ist_index,
fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
/* decode the packet if needed */
data_buf = NULL; /* fail safe */
data_size = 0;
decoded_data_buf = NULL; /* fail safe */
decoded_data_size= 0;
data_buf = avpkt.data;
data_size = avpkt.size;
subtitle_to_free = NULL;
if (ist->decoding_needed) {
switch(ist->st->codec->codec_type) {
@ -1320,27 +1322,28 @@ static int output_packet(AVInputStream *ist, int ist_index,
av_free(samples);
samples= av_malloc(samples_size);
}
data_size= samples_size;
decoded_data_size= samples_size;
/* XXX: could avoid copy if PCM 16 bits with same
endianness as CPU */
ret = avcodec_decode_audio3(ist->st->codec, samples, &data_size,
ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
&avpkt);
if (ret < 0)
goto fail_decode;
avpkt.data += ret;
avpkt.size -= ret;
data_size = ret;
/* Some bug in mpeg audio decoder gives */
/* data_size < 0, it seems they are overflows */
if (data_size <= 0) {
/* decoded_data_size < 0, it seems they are overflows */
if (decoded_data_size <= 0) {
/* no audio frame */
continue;
}
data_buf = (uint8_t *)samples;
ist->next_pts += ((int64_t)AV_TIME_BASE/bps * data_size) /
decoded_data_buf = (uint8_t *)samples;
ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
(ist->st->codec->sample_rate * ist->st->codec->channels);
break;}
case CODEC_TYPE_VIDEO:
data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
/* XXX: allocate picture correctly */
avcodec_get_frame_defaults(&picture);
@ -1390,8 +1393,6 @@ static int output_packet(AVInputStream *ist, int ist_index,
}
break;
}
data_buf = avpkt.data;
data_size = avpkt.size;
ret = avpkt.size;
avpkt.size = 0;
}
@ -1407,7 +1408,7 @@ static int output_packet(AVInputStream *ist, int ist_index,
if (audio_volume != 256) {
short *volp;
volp = samples;
for(i=0;i<(data_size / sizeof(short));i++) {
for(i=0;i<(decoded_data_size / sizeof(short));i++) {
int v = ((*volp) * audio_volume + 128) >> 8;
if (v < -32768) v = -32768;
if (v > 32767) v = 32767;
@ -1438,9 +1439,10 @@ static int output_packet(AVInputStream *ist, int ist_index,
//ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
if (ost->encoding_needed) {
assert(ist->decoding_needed);
switch(ost->st->codec->codec_type) {
case CODEC_TYPE_AUDIO:
do_audio_out(os, ost, ist, data_buf, data_size);
do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
break;
case CODEC_TYPE_VIDEO:
do_video_out(os, ost, ist, &picture, &frame_size);