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Merge commit '1b0082eabc' into release/1.1

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* commit '1b0082eabc':
  flvdec: Don't read the VP6 header byte when setting codec type based on metadata
  vorbisdec: Accept 0 amplitude_bits
  vorbisdec: Error on bark_map_size equal to 0.
  vorbisdec: Add missing checks
  ac3dec: validate channel output mode against channel count

Conflicts:
	libavcodec/ac3dec.c
	libavformat/flvdec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-03-03 11:56:42 +01:00
commit b3c8fd1f0e
3 changed files with 34 additions and 23 deletions
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16
libavcodec/ac3dec.c
View file

@ -1336,8 +1336,10 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
if (!err) {
avctx->sample_rate = s->sample_rate;
avctx->bit_rate = s->bit_rate;
}
/* channel config */
/* channel config */
if (!err || (s->channels && s->out_channels != s->channels)) {
s->out_channels = s->channels;
s->output_mode = s->channel_mode;
if (s->lfe_on)
@ -1360,22 +1362,18 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
s->fbw_channels == s->out_channels)) {
set_downmix_coeffs(s);
}
} else if (!s->out_channels) {
s->out_channels = avctx->channels;
if (s->out_channels < s->channels)
s->output_mode = s->out_channels == 1 ? AC3_CHMODE_MONO : AC3_CHMODE_STEREO;
}
if (avctx->channels != s->out_channels) {
av_log(avctx, AV_LOG_ERROR, "channel number mismatching on damaged frame\n");
} else if (!s->channels) {
av_log(avctx, AV_LOG_ERROR, "unable to determine channel mode\n");
return AVERROR_INVALIDDATA;
}
avctx->channels = s->out_channels;
/* set audio service type based on bitstream mode for AC-3 */
avctx->audio_service_type = s->bitstream_mode;
if (s->bitstream_mode == 0x7 && s->channels > 1)
avctx->audio_service_type = AV_AUDIO_SERVICE_TYPE_KARAOKE;
/* get output buffer */
avctx->channels = s->out_channels;
s->frame.nb_samples = s->num_blocks * 256;
if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

25
libavcodec/vorbisdec.c
View file

@ -591,16 +591,24 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
floor_setup->decode = vorbis_floor0_decode;
floor_setup->data.t0.order = get_bits(gb, 8);
floor_setup->data.t0.rate = get_bits(gb, 16);
floor_setup->data.t0.bark_map_size = get_bits(gb, 16);
floor_setup->data.t0.amplitude_bits = get_bits(gb, 6);
/* zero would result in a div by zero later *
* 2^0 - 1 == 0 */
if (floor_setup->data.t0.amplitude_bits == 0) {
if (!floor_setup->data.t0.order) {
av_log(vc->avccontext, AV_LOG_ERROR,
"Floor 0 amplitude bits is 0.\n");
"Floor 0 order is 0.\n");
return AVERROR_INVALIDDATA;
}
floor_setup->data.t0.rate = get_bits(gb, 16);
if (!floor_setup->data.t0.rate) {
av_log(vc->avccontext, AV_LOG_ERROR,
"Floor 0 rate is 0.\n");
return AVERROR_INVALIDDATA;
}
floor_setup->data.t0.bark_map_size = get_bits(gb, 16);
if (floor_setup->data.t0.bark_map_size == 0) {
av_log(vc->avccontext, AV_LOG_ERROR,
"Floor 0 bark map size is 0.\n");
return AVERROR_INVALIDDATA;
}
floor_setup->data.t0.amplitude_bits = get_bits(gb, 6);
floor_setup->data.t0.amplitude_offset = get_bits(gb, 8);
floor_setup->data.t0.num_books = get_bits(gb, 4) + 1;
@ -1054,6 +1062,9 @@ static int vorbis_floor0_decode(vorbis_context *vc,
unsigned amplitude, book_idx;
unsigned blockflag = vc->modes[vc->mode_number].blockflag;
if (!vf->amplitude_bits)
return 1;
amplitude = get_bits(&vc->gb, vf->amplitude_bits);
if (amplitude > 0) {
float last = 0;