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Add log_level_offset parameter to ff_flac_decode_frame_header(). It will be used 

to optionally silence the error messages.
Patch by Michael Chinen [mchinen at gmail]

Originally committed as revision 25912 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Chinen 2010-12-07 14:00:38 +00:00 committed by Justin Ruggles
parent 71b6fc216c
commit 3c795698d0
3 changed files with 12 additions and 11 deletions
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18
libavcodec/flac.c
View File

@ -33,13 +33,13 @@ static int64_t get_utf8(GetBitContext *gb)
}
int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
FLACFrameInfo *fi)
FLACFrameInfo *fi, int log_level_offset)
{
int bs_code, sr_code, bps_code;
/* frame sync code */
if ((get_bits(gb, 15) & 0x7FFF) != 0x7FFC) {
av_log(avctx, AV_LOG_ERROR, "invalid sync code\n");
av_log(avctx, AV_LOG_ERROR + log_level_offset, "invalid sync code\n");
return -1;
}
@ -58,14 +58,14 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
} else if (fi->ch_mode <= FLAC_CHMODE_MID_SIDE) {
fi->channels = 2;
} else {
av_log(avctx, AV_LOG_ERROR, "invalid channel mode: %d\n", fi->ch_mode);
av_log(avctx, AV_LOG_ERROR + log_level_offset, "invalid channel mode: %d\n", fi->ch_mode);
return -1;
}
/* bits per sample */
bps_code = get_bits(gb, 3);
if (bps_code == 3 || bps_code == 7) {
av_log(avctx, AV_LOG_ERROR, "invalid sample size code (%d)\n",
av_log(avctx, AV_LOG_ERROR + log_level_offset, "invalid sample size code (%d)\n",
bps_code);
return -1;
}
@ -73,20 +73,20 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
/* reserved bit */
if (get_bits1(gb)) {
av_log(avctx, AV_LOG_ERROR, "broken stream, invalid padding\n");
av_log(avctx, AV_LOG_ERROR + log_level_offset, "broken stream, invalid padding\n");
return -1;
}
/* sample or frame count */
fi->frame_or_sample_num = get_utf8(gb);
if (fi->frame_or_sample_num < 0) {
av_log(avctx, AV_LOG_ERROR, "sample/frame number invalid; utf8 fscked\n");
av_log(avctx, AV_LOG_ERROR + log_level_offset, "sample/frame number invalid; utf8 fscked\n");
return -1;
}
/* blocksize */
if (bs_code == 0) {
av_log(avctx, AV_LOG_ERROR, "reserved blocksize code: 0\n");
av_log(avctx, AV_LOG_ERROR + log_level_offset, "reserved blocksize code: 0\n");
return -1;
} else if (bs_code == 6) {
fi->blocksize = get_bits(gb, 8) + 1;
@ -106,7 +106,7 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
} else if (sr_code == 14) {
fi->samplerate = get_bits(gb, 16) * 10;
} else {
av_log(avctx, AV_LOG_ERROR, "illegal sample rate code %d\n",
av_log(avctx, AV_LOG_ERROR + log_level_offset, "illegal sample rate code %d\n",
sr_code);
return -1;
}
@ -115,7 +115,7 @@ int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
skip_bits(gb, 8);
if (av_crc(av_crc_get_table(AV_CRC_8_ATM), 0, gb->buffer,
get_bits_count(gb)/8)) {
av_log(avctx, AV_LOG_ERROR, "header crc mismatch\n");
av_log(avctx, AV_LOG_ERROR + log_level_offset, "header crc mismatch\n");
return -1;
}

3
libavcodec/flac.h
View File

@ -131,8 +131,9 @@ int ff_flac_get_max_frame_size(int blocksize, int ch, int bps);
* @param avctx AVCodecContext to use as av_log() context
* @param gb GetBitContext from which to read frame header
* @param[out] fi frame information
* @param log_level_offset log level offset. can be used to silence error messages.
* @return non-zero on error, 0 if ok
*/
int ff_flac_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
FLACFrameInfo *fi);
FLACFrameInfo *fi, int log_level_offset);
#endif /* AVCODEC_FLAC_H */

2
libavcodec/flacdec.c
View File

@ -476,7 +476,7 @@ static int decode_frame(FLACContext *s)
GetBitContext *gb = &s->gb;
FLACFrameInfo fi;
if (ff_flac_decode_frame_header(s->avctx, gb, &fi)) {
if (ff_flac_decode_frame_header(s->avctx, gb, &fi, 0)) {
av_log(s->avctx, AV_LOG_ERROR, "invalid frame header\n");
return -1;
}