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metasound: add last missing modes (8kHz @ 6kbps per channel)

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Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Kostya Shishkov 2013-11-18 12:07:14 +01:00 committed by Anton Khirnov
parent de44dfc7c0
commit 56d061ce9d
7 changed files with 31 additions and 4 deletions
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2
Changelog
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@ -32,7 +32,7 @@ version 10:
the -noaccurate_seek option.
- avconv -t option can now be used for inputs, to limit the duration of
data read from an input file
- incomplete Voxware MetaSound decoder
- Voxware MetaSound decoder
- WebP decoder
- Error Resilient AAC syntax (ER AAC LC) decoding
- Low Delay AAC (ER AAC LD) decoding

1
doc/general.texi
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@ -827,7 +827,6 @@ following image formats are supported:
@item Vorbis @tab E @tab X
@tab A native but very primitive encoder exists.
@item Voxware MetaSound @tab @tab X
@tab imperfect and incomplete support
@item WavPack @tab E @tab X
@tab supported through external library libwavpack
@item Westwood Audio (SND1) @tab @tab X

9
libavcodec/metasound.c
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@ -187,7 +187,7 @@ static int metasound_read_bitstream(AVCodecContext *avctx, TwinVQContext *tctx,
sub = mtab->fmode[bits->ftype].sub;
if (bits->ftype != TWINVQ_FT_SHORT)
if (bits->ftype != TWINVQ_FT_SHORT && !tctx->is_6kbps)
get_bits(&gb, 2);
read_cb_data(tctx, &gb, bits->main_coeffs, bits->ftype);
@ -307,6 +307,12 @@ static av_cold int metasound_decode_init(AVCodecContext *avctx)
ibps = avctx->bit_rate / (1000 * avctx->channels);
switch ((avctx->channels << 16) + (isampf << 8) + ibps) {
case (1 << 16) + ( 8 << 8) + 6:
tctx->mtab = &ff_metasound_mode0806;
break;
case (2 << 16) + ( 8 << 8) + 6:
tctx->mtab = &ff_metasound_mode0806s;
break;
case (1 << 16) + ( 8 << 8) + 8:
tctx->mtab = &ff_metasound_mode0808;
break;
@ -362,6 +368,7 @@ static av_cold int metasound_decode_init(AVCodecContext *avctx)
tctx->decode_ppc = decode_ppc;
tctx->frame_size = avctx->bit_rate * tctx->mtab->size
/ avctx->sample_rate;
tctx->is_6kbps = ibps == 6;
return ff_twinvq_decode_init(avctx);
}

18
libavcodec/metasound_data.c
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@ -15190,6 +15190,24 @@ static const uint16_t bark_tab_s44_128[] = {
1, 2, 1, 2, 3, 4, 6, 10, 23, 76
};
const TwinVQModeTab ff_metasound_mode0806 = {
{
{ 8, bark_tab_s8_64, 10, fcb8s, 1, 5, cb0806ss0, cb0806ss1, 27 },
{ 2, bark_tab_m8_256, 20, fcb8m, 2, 5, cb0806sm0, cb0806sm1, 22 },
{ 1, bark_tab_l8_512, 30, fcb8l, 3, 6, cb0806sl0, cb0806sl1, 24 }
},
512, 12, lsp8, 1, 5, 3, 3, shape8, 8, 28, 20, 6, 200
};
const TwinVQModeTab ff_metasound_mode0806s = {
{
{ 8, bark_tab_s8s_64, 10, fcb8ss, 1, 5, cb0806ss0, cb0806ss1, 27 },
{ 2, bark_tab_m8s_256, 20, fcb8sm, 2, 5, cb0806sm0, cb0806sm1, 22 },
{ 1, bark_tab_l8s_512, 30, fcb8sl, 3, 6, cb0806sl0, cb0806sl1, 24 }
},
512, 12, lsp8s, 1, 5, 3, 3, shape8s, 8, 28, 20, 6, 200
};
const TwinVQModeTab ff_metasound_mode0808 = {
{
{ 8, bark_tab_s8_64, 10, fcb8s, 1, 5, cb0808s0, cb0808s1, 18 },

2
libavcodec/twinvq.c
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@ -706,7 +706,7 @@ static av_cold void init_bitstream_params(TwinVQContext *tctx)
TWINVQ_WINDOW_TYPE_BITS +
mtab->fmode[i].sub * (bse_bits[i] + n_ch * TWINVQ_SUB_GAIN_BITS);
if (tctx->codec == TWINVQ_CODEC_METASOUND) {
if (tctx->codec == TWINVQ_CODEC_METASOUND && !tctx->is_6kbps) {
bsize_no_main_cb[1] += 2;
bsize_no_main_cb[2] += 2;
}

2
libavcodec/twinvq.h
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@ -141,6 +141,8 @@ typedef struct TwinVQContext {
const TwinVQModeTab *mtab;
int is_6kbps;
// history
float lsp_hist[2][20]; ///< LSP coefficients of the last frame
float bark_hist[3][2][40]; ///< BSE coefficients of last frame

1
libavcodec/twinvqdec.c
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@ -402,6 +402,7 @@ static av_cold int twinvq_decode_init(AVCodecContext *avctx)
tctx->decode_ppc = decode_ppc;
tctx->frame_size = avctx->bit_rate * tctx->mtab->size
/ avctx->sample_rate + 8;
tctx->is_6kbps = 0;
if (avctx->block_align && avctx->block_align * 8 / tctx->frame_size > 1) {
av_log(avctx, AV_LOG_ERROR,
"VQF TwinVQ should have only one frame per packet\n");