virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-10 06:10:52 +02:00
Code Issues Releases Activity

Add silence support for AV_SAMPLE_FMT_U8.

Browse Source 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Alex Converse
2011-04-04 16:07:23 -07:00
committed by Anton Khirnov
parent b840484798
commit 14cf0fd2f5
1 changed files with 9 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
ffmpeg.c
View File

@@ -1390,6 +1390,14 @@ static void print_report(AVFormatContext **output_files,
} }
} }
static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
{
int fill_char = 0x00;
if (sample_fmt == AV_SAMPLE_FMT_U8)
fill_char = 0x80;
memset(buf, fill_char, size);
}
/* pkt = NULL means EOF (needed to flush decoder buffers) */ /* pkt = NULL means EOF (needed to flush decoder buffers) */
static int output_packet(AVInputStream *ist, int ist_index, static int output_packet(AVInputStream *ist, int ist_index,
AVOutputStream **ost_table, int nb_ostreams, AVOutputStream **ost_table, int nb_ostreams,
@@ -1732,7 +1740,7 @@ static int output_packet(AVInputStream *ist, int ist_index,
int frame_bytes = enc->frame_size*osize*enc->channels; int frame_bytes = enc->frame_size*osize*enc->channels;
if (allocated_audio_buf_size < frame_bytes) if (allocated_audio_buf_size < frame_bytes)
ffmpeg_exit(1); ffmpeg_exit(1);
memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes); generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
} }
ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf); ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);