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aacdec: add MPEG4AudioConfig as parameter for decode_audio_specific_config 

This will be used by the latm decoder to avoid AACContext changes during
audio specific config parsing.

Originally committed as revision 25638 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Janne Grunau 2010-11-02 08:28:28 +00:00
parent 45290fcdf0
commit 37d289530f
1 changed files with 16 additions and 13 deletions
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29
libavcodec/aacdec.c
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@ -381,6 +381,7 @@ static av_cold int set_default_channel_config(AACContext *ac,
* @return Returns error status. 0 - OK, !0 - error
*/
static int decode_ga_specific_config(AACContext *ac, GetBitContext *gb,
MPEG4AudioConfig *m4ac,
int channel_config)
{
enum ChannelPosition new_che_pos[4][MAX_ELEM_ID];
@ -395,8 +396,8 @@ static int decode_ga_specific_config(AACContext *ac, GetBitContext *gb,
skip_bits(gb, 14); // coreCoderDelay
extension_flag = get_bits1(gb);
if (ac->m4ac.object_type == AOT_AAC_SCALABLE ||
ac->m4ac.object_type == AOT_ER_AAC_SCALABLE)
if (m4ac->object_type == AOT_AAC_SCALABLE ||
m4ac->object_type == AOT_ER_AAC_SCALABLE)
skip_bits(gb, 3); // layerNr
memset(new_che_pos, 0, 4 * MAX_ELEM_ID * sizeof(new_che_pos[0][0]));
@ -412,7 +413,7 @@ static int decode_ga_specific_config(AACContext *ac, GetBitContext *gb,
return ret;
if (extension_flag) {
switch (ac->m4ac.object_type) {
switch (m4ac->object_type) {
case AOT_ER_BSAC:
skip_bits(gb, 5); // numOfSubFrame
skip_bits(gb, 11); // layer_length
@ -440,7 +441,8 @@ static int decode_ga_specific_config(AACContext *ac, GetBitContext *gb,
*
* @return Returns error status. 0 - OK, !0 - error
*/
static int decode_audio_specific_config(AACContext *ac, void *data,
static int decode_audio_specific_config(AACContext *ac,
MPEG4AudioConfig *m4ac, void *data,
int data_size)
{
GetBitContext gb;
@ -448,28 +450,29 @@ static int decode_audio_specific_config(AACContext *ac, void *data,
init_get_bits(&gb, data, data_size * 8);
if ((i = ff_mpeg4audio_get_config(&ac->m4ac, data, data_size)) < 0)
if ((i = ff_mpeg4audio_get_config(m4ac, data, data_size)) < 0)
return -1;
if (ac->m4ac.sampling_index > 12) {
av_log(ac->avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", ac->m4ac.sampling_index);
if (m4ac->sampling_index > 12) {
av_log(ac->avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", m4ac->sampling_index);
return -1;
}
if (ac->m4ac.sbr == 1 && ac->m4ac.ps == -1)
ac->m4ac.ps = 1;
if (m4ac->sbr == 1 && m4ac->ps == -1)
m4ac->ps = 1;
skip_bits_long(&gb, i);
switch (ac->m4ac.object_type) {
switch (m4ac->object_type) {
case AOT_AAC_MAIN:
case AOT_AAC_LC:
if (decode_ga_specific_config(ac, &gb, ac->m4ac.chan_config))
if (decode_ga_specific_config(ac, &gb, m4ac, m4ac->chan_config))
return -1;
break;
default:
av_log(ac->avctx, AV_LOG_ERROR, "Audio object type %s%d is not supported.\n",
ac->m4ac.sbr == 1? "SBR+" : "", ac->m4ac.object_type);
m4ac->sbr == 1? "SBR+" : "", m4ac->object_type);
return -1;
}
return 0;
}
@ -523,7 +526,7 @@ static av_cold int aac_decode_init(AVCodecContext *avctx)
ac->m4ac.sample_rate = avctx->sample_rate;
if (avctx->extradata_size > 0) {
if (decode_audio_specific_config(ac, avctx->extradata, avctx->extradata_size))
if (decode_audio_specific_config(ac, &ac->m4ac, avctx->extradata, avctx->extradata_size) < 0)
return -1;
}