diff options
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/mlp_parse.c | 50 | ||||
| -rw-r--r-- | libavcodec/mlp_parse.h | 49 |
2 files changed, 49 insertions, 50 deletions
diff --git a/libavcodec/mlp_parse.c b/libavcodec/mlp_parse.c index 067735303c..3a71f2c0b7 100644 --- a/libavcodec/mlp_parse.c +++ b/libavcodec/mlp_parse.c @@ -60,56 +60,6 @@ static const uint64_t mlp_layout[32] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; -static const uint8_t thd_chancount[13] = { -// LR C LFE LRs LRvh LRc LRrs Cs Ts LRsd LRw Cvh LFE2 - 2, 1, 1, 2, 2, 2, 2, 1, 1, 2, 2, 1, 1 -}; - -static const uint64_t thd_layout[13] = { - AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT, // LR - AV_CH_FRONT_CENTER, // C - AV_CH_LOW_FREQUENCY, // LFE - AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT, // LRs - AV_CH_TOP_FRONT_LEFT|AV_CH_TOP_FRONT_RIGHT, // LRvh - AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER, // LRc - AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT, // LRrs - AV_CH_BACK_CENTER, // Cs - AV_CH_TOP_CENTER, // Ts - AV_CH_SURROUND_DIRECT_LEFT|AV_CH_SURROUND_DIRECT_RIGHT, // LRsd - AV_CH_WIDE_LEFT|AV_CH_WIDE_RIGHT, // LRw - AV_CH_TOP_FRONT_CENTER, // Cvh - AV_CH_LOW_FREQUENCY_2, // LFE2 -}; - -static int mlp_samplerate(int in) -{ - if (in == 0xF) - return 0; - - return (in & 8 ? 44100 : 48000) << (in & 7) ; -} - -static int truehd_channels(int chanmap) -{ - int channels = 0, i; - - for (i = 0; i < 13; i++) - channels += thd_chancount[i] * ((chanmap >> i) & 1); - - return channels; -} - -static uint64_t truehd_layout(int chanmap) -{ - int i; - uint64_t layout = 0; - - for (i = 0; i < 13; i++) - layout |= thd_layout[i] * ((chanmap >> i) & 1); - - return layout; -} - static int mlp_get_major_sync_size(const uint8_t * buf, int bufsize) { int has_extension, extensions = 0; diff --git a/libavcodec/mlp_parse.h b/libavcodec/mlp_parse.h index c6025d1a18..a0790ae8c7 100644 --- a/libavcodec/mlp_parse.h +++ b/libavcodec/mlp_parse.h @@ -56,6 +56,55 @@ typedef struct MLPHeaderInfo int num_substreams; ///< Number of substreams within stream } MLPHeaderInfo; +static const uint8_t thd_chancount[13] = { +// LR C LFE LRs LRvh LRc LRrs Cs Ts LRsd LRw Cvh LFE2 + 2, 1, 1, 2, 2, 2, 2, 1, 1, 2, 2, 1, 1 +}; + +static const uint64_t thd_layout[13] = { + AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT, // LR + AV_CH_FRONT_CENTER, // C + AV_CH_LOW_FREQUENCY, // LFE + AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT, // LRs + AV_CH_TOP_FRONT_LEFT|AV_CH_TOP_FRONT_RIGHT, // LRvh + AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER, // LRc + AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT, // LRrs + AV_CH_BACK_CENTER, // Cs + AV_CH_TOP_CENTER, // Ts + AV_CH_SURROUND_DIRECT_LEFT|AV_CH_SURROUND_DIRECT_RIGHT, // LRsd + AV_CH_WIDE_LEFT|AV_CH_WIDE_RIGHT, // LRw + AV_CH_TOP_FRONT_CENTER, // Cvh + AV_CH_LOW_FREQUENCY_2, // LFE2 +}; + +static inline int mlp_samplerate(int in) +{ + if (in == 0xF) + return 0; + + return (in & 8 ? 44100 : 48000) << (in & 7) ; +} + +static inline int truehd_channels(int chanmap) +{ + int channels = 0, i; + + for (i = 0; i < 13; i++) + channels += thd_chancount[i] * ((chanmap >> i) & 1); + + return channels; +} + +static inline uint64_t truehd_layout(int chanmap) +{ + int i; + uint64_t layout = 0; + + for (i = 0; i < 13; i++) + layout |= thd_layout[i] * ((chanmap >> i) & 1); + + return layout; +} int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb); |