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Code Issues Releases Activity

Try to allocate audio buffer sizes depending on the number of input bytes.

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Fixes issue1167.

Originally committed as revision 20768 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2009-12-08 14:28:28 +00:00
parent 5ee05a62f9
commit 15bfe412b7
1 changed files with 18 additions and 3 deletions
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21
ffmpeg.c
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@ -555,17 +555,33 @@ static void do_audio_out(AVFormatContext *s,
unsigned char *buf, int size)
{
uint8_t *buftmp;
const int audio_out_size= 4*MAX_AUDIO_PACKET_SIZE;
int64_t audio_out_size, audio_buf_size;
int size_out, frame_bytes, ret;
AVCodecContext *enc= ost->st->codec;
AVCodecContext *dec= ist->st->codec;
int osize= av_get_bits_per_sample_format(enc->sample_fmt)/8;
int isize= av_get_bits_per_sample_format(dec->sample_fmt)/8;
const int coded_bps = av_get_bits_per_sample(enc->codec->id);
audio_buf_size= (size + isize*dec->channels - 1) / (isize*dec->channels);
audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
audio_buf_size= audio_buf_size*2 + 10000; //saftey factors for the deprecated resampling API
audio_buf_size*= osize*enc->channels;
audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
if(coded_bps > 8*osize)
audio_out_size= audio_out_size * coded_bps / (8*osize);
audio_out_size += FF_MIN_BUFFER_SIZE;
if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
fprintf(stderr, "Buffer sizes too large\n");
av_exit(1);
}
/* SC: dynamic allocation of buffers */
if (!audio_buf)
audio_buf = av_malloc(audio_out_size);
audio_buf = av_malloc(audio_buf_size);
if (!audio_out)
audio_out = av_malloc(audio_out_size);
if (!audio_buf || !audio_out)
@ -717,7 +733,6 @@ static void do_audio_out(AVFormatContext *s,
}
} else {
AVPacket pkt;
int coded_bps = av_get_bits_per_sample(enc->codec->id);
av_init_packet(&pkt);
ost->sync_opts += size_out / (osize * enc->channels);