diff options
| author | Marth64 <marth64@proxyid.net> | 2023-02-18 11:24:38 -0600 |
|---|---|---|
| committer | Hendrik Leppkes <h.leppkes@gmail.com> | 2023-03-02 13:45:59 +0100 |
| commit | 96ed043afa44d468ff3629095f90d391450c4e60 (patch) | |
| tree | 7f2b45027ba2fc443e7f2ad5f6352d7be53e4637 | |
| parent | a4e5b946332dd625affd0e259eb787575e5c32f2 (diff) | |
avcodec/mlpdec: add detection of Atmos spatial extension profile in TrueHD
Signed-off-by: Marth64 <marth64@proxyid.net>
| -rw-r--r-- | libavcodec/avcodec.h | 2 | ||||
| -rw-r--r-- | libavcodec/codec_desc.c | 1 | ||||
| -rw-r--r-- | libavcodec/mlpdec.c | 10 | ||||
| -rw-r--r-- | libavcodec/profiles.c | 5 | ||||
| -rw-r--r-- | libavcodec/profiles.h | 1 |
5 files changed, 19 insertions, 0 deletions
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 3e9b0dbd26..0645114772 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -1593,6 +1593,8 @@ typedef struct AVCodecContext { #define FF_PROFILE_EAC3_DDP_ATMOS 30 +#define FF_PROFILE_TRUEHD_ATMOS 30 + #define FF_PROFILE_MPEG2_422 0 #define FF_PROFILE_MPEG2_HIGH 1 #define FF_PROFILE_MPEG2_SS 2 diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c index 4098d4f5a5..e80ac07700 100644 --- a/libavcodec/codec_desc.c +++ b/libavcodec/codec_desc.c @@ -2960,6 +2960,7 @@ static const AVCodecDescriptor codec_descriptors[] = { .name = "truehd", .long_name = NULL_IF_CONFIG_SMALL("TrueHD"), .props = AV_CODEC_PROP_LOSSLESS, + .profiles = NULL_IF_CONFIG_SMALL(ff_truehd_profiles), }, { .id = AV_CODEC_ID_MP4ALS, diff --git a/libavcodec/mlpdec.c b/libavcodec/mlpdec.c index 0ee1f0982c..966ee0f0a2 100644 --- a/libavcodec/mlpdec.c +++ b/libavcodec/mlpdec.c @@ -42,6 +42,7 @@ #include "mlpdsp.h" #include "mlp.h" #include "config.h" +#include "profiles.h" /** number of bits used for VLC lookup - longest Huffman code is 9 */ #if ARCH_ARM @@ -392,6 +393,14 @@ static int read_major_sync(MLPDecodeContext *m, GetBitContext *gb) m->num_substreams = mh.num_substreams; m->substream_info = mh.substream_info; + /* If there is a 4th substream and the MSB of substream_info is set, + * there is a 16-channel spatial presentation (Atmos in TrueHD). + */ + if (m->avctx->codec_id == AV_CODEC_ID_TRUEHD + && m->num_substreams == 4 && m->substream_info >> 7 == 1) { + m->avctx->profile = FF_PROFILE_TRUEHD_ATMOS; + } + /* limit to decoding 3 substreams, as the 4th is used by Dolby Atmos for non-audio data */ m->max_decoded_substream = FFMIN(m->num_substreams - 1, 2); @@ -1452,5 +1461,6 @@ const FFCodec ff_truehd_decoder = { FF_CODEC_DECODE_CB(read_access_unit), .flush = mlp_decode_flush, .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF, + .p.profiles = NULL_IF_CONFIG_SMALL(ff_truehd_profiles), }; #endif /* CONFIG_TRUEHD_DECODER */ diff --git a/libavcodec/profiles.c b/libavcodec/profiles.c index 5c026ef380..ec5d646344 100644 --- a/libavcodec/profiles.c +++ b/libavcodec/profiles.c @@ -50,6 +50,11 @@ const AVProfile ff_eac3_profiles[] = { { FF_PROFILE_UNKNOWN }, }; +const AVProfile ff_truehd_profiles[] = { + { FF_PROFILE_TRUEHD_ATMOS, "Dolby TrueHD + Dolby Atmos"}, + { FF_PROFILE_UNKNOWN }, +}; + const AVProfile ff_dnxhd_profiles[] = { { FF_PROFILE_DNXHD, "DNXHD"}, { FF_PROFILE_DNXHR_LB, "DNXHR LB"}, diff --git a/libavcodec/profiles.h b/libavcodec/profiles.h index 6ebedbd03f..1d523992fc 100644 --- a/libavcodec/profiles.h +++ b/libavcodec/profiles.h @@ -59,6 +59,7 @@ extern const AVProfile ff_aac_profiles[]; extern const AVProfile ff_dca_profiles[]; extern const AVProfile ff_eac3_profiles[]; +extern const AVProfile ff_truehd_profiles[]; extern const AVProfile ff_dnxhd_profiles[]; extern const AVProfile ff_h264_profiles[]; extern const AVProfile ff_hevc_profiles[]; |