diff options
| -rw-r--r-- | libavcodec/atrac3plusdec.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/libavcodec/atrac3plusdec.c b/libavcodec/atrac3plusdec.c index f87ffb8938..aef4e36df8 100644 --- a/libavcodec/atrac3plusdec.c +++ b/libavcodec/atrac3plusdec.c @@ -48,6 +48,17 @@ #include "atrac.h" #include "atrac3plus.h" +static const uint8_t channel_map[8][8] = { + { 0, }, + { 0, 1, }, + { 0, 1, 2, }, + { 0, 1, 2, 3, }, + { 0, }, + { 0, 1, 2, 4, 5, 3, }, + { 0, 1, 2, 4, 5, 6, 3, }, + { 0, 1, 2, 4, 5, 6, 7, 3, }, +}; + typedef struct ATRAC3PContext { GetBitContext gb; AVFloatDSPContext *fdsp; @@ -65,6 +76,7 @@ typedef struct ATRAC3PContext { int num_channel_blocks; ///< number of channel blocks uint8_t channel_blocks[5]; ///< channel configuration descriptor + const uint8_t *channel_map; ///< channel layout map } ATRAC3PContext; static av_cold int atrac3p_decode_close(AVCodecContext *avctx) @@ -143,6 +155,8 @@ static av_cold int set_channel_params(ATRAC3PContext *ctx, return AVERROR_INVALIDDATA; } + ctx->channel_map = channel_map[channels - 1]; + return 0; } @@ -378,7 +392,7 @@ static int atrac3p_decode_frame(AVCodecContext *avctx, AVFrame *frame, channels_to_process, avctx); for (i = 0; i < channels_to_process; i++) - memcpy(samples_p[out_ch_index + i], ctx->outp_buf[i], + memcpy(samples_p[ctx->channel_map[out_ch_index + i]], ctx->outp_buf[i], ATRAC3P_FRAME_SAMPLES * sizeof(**samples_p)); ch_block++; |