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avcodec/dca_xll: add detection of DTS:X and DTS:X IMAX

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Signed-off-by: Marth64 <marth64@proxyid.net>
This commit is contained in:
Marth64 2023-02-17 19:14:56 -06:00 committed by Hendrik Leppkes
parent 96ed043afa
commit 98a4699216
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GPG Key ID: 846079A4B0A7C1B5
5 changed files with 48 additions and 13 deletions
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3
libavcodec/avcodec.h
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@ -1590,6 +1590,9 @@ typedef struct AVCodecContext {
#define FF_PROFILE_DTS_HD_HRA 50
#define FF_PROFILE_DTS_HD_MA 60
#define FF_PROFILE_DTS_EXPRESS 70
#define FF_PROFILE_DTS_HD_MA_X 61
#define FF_PROFILE_DTS_HD_MA_X_IMAX 62
#define FF_PROFILE_EAC3_DDP_ATMOS 30

3
libavcodec/dca_syncwords.h
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@ -33,4 +33,7 @@
#define DCA_SYNCWORD_SUBSTREAM_CORE 0x02B09261U
#define DCA_SYNCWORD_REV1AUX 0x9A1105A0U
#define DCA_SYNCWORD_XLL_X 0x02000850U
#define DCA_SYNCWORD_XLL_X_IMAX 0xF14000D0U
#endif /* AVCODEC_DCA_SYNCWORDS_H */

26
libavcodec/dca_xll.c
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@ -18,6 +18,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "libavutil/channel_layout.h"
#include "dcadec.h"
#include "dcadata.h"
@ -1054,6 +1055,22 @@ static int parse_frame(DCAXllDecoder *s, const uint8_t *data, int size, DCAExssA
return ret;
if ((ret = parse_band_data(s)) < 0)
return ret;
if (s->frame_size * 8 > FFALIGN(get_bits_count(&s->gb), 32)) {
unsigned int extradata_syncword;
// Align to dword
skip_bits_long(&s->gb, -get_bits_count(&s->gb) & 31);
extradata_syncword = show_bits_long(&s->gb, 32);
if (extradata_syncword == DCA_SYNCWORD_XLL_X) {
s->x_syncword_present = 1;
} else if ((extradata_syncword >> 1) == (DCA_SYNCWORD_XLL_X_IMAX >> 1)) {
s->x_imax_syncword_present = 1;
}
}
if (ff_dca_seek_bits(&s->gb, s->frame_size * 8)) {
av_log(s->avctx, AV_LOG_ERROR, "Read past end of XLL frame\n");
return AVERROR_INVALIDDATA;
@ -1428,8 +1445,15 @@ int ff_dca_xll_filter_frame(DCAXllDecoder *s, AVFrame *frame)
return AVERROR(EINVAL);
}
avctx->bits_per_raw_sample = p->storage_bit_res;
if (s->x_imax_syncword_present) {
avctx->profile = FF_PROFILE_DTS_HD_MA_X_IMAX;
} else if (s->x_syncword_present) {
avctx->profile = FF_PROFILE_DTS_HD_MA_X;
} else {
avctx->profile = FF_PROFILE_DTS_HD_MA;
}
avctx->bits_per_raw_sample = p->storage_bit_res;
avctx->bit_rate = 0;
frame->nb_samples = nsamples = s->nframesamples << (s->nfreqbands - 1);

3
libavcodec/dca_xll.h
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@ -135,6 +135,9 @@ typedef struct DCAXllDecoder {
DCADSPContext *dcadsp;
int x_syncword_present; ///< Syncword for extension data at end of frame (DTS:X) is present
int x_imax_syncword_present; ///< Syncword for extension data at end of frame (DTS:X IMAX) is present
int output_mask;
int32_t *output_samples[DCA_SPEAKER_COUNT];
} DCAXllDecoder;

2
libavcodec/profiles.c
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@ -41,6 +41,8 @@ const AVProfile ff_dca_profiles[] = {
{ FF_PROFILE_DTS_96_24, "DTS 96/24" },
{ FF_PROFILE_DTS_HD_HRA, "DTS-HD HRA" },
{ FF_PROFILE_DTS_HD_MA, "DTS-HD MA" },
{ FF_PROFILE_DTS_HD_MA_X, "DTS-HD MA + DTS:X" },
{ FF_PROFILE_DTS_HD_MA_X_IMAX, "DTS-HD MA + DTS:X IMAX" },
{ FF_PROFILE_DTS_EXPRESS, "DTS Express" },
{ FF_PROFILE_UNKNOWN },
};