Indicates a YCbCr->RGB transform at the block level. Although nothing explicitly states it, this would assume the actual content is planar RGB.
Currently unsupported, but the one sequence I found using it flagged every mb that way, actually meaning the content was YCbCr, and thus best left to the output format to decide what to do of it. --- libavcodec/dnxhddec.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c index 82a0d3c..7570a9a 100644 --- a/libavcodec/dnxhddec.c +++ b/libavcodec/dnxhddec.c @@ -59,6 +59,7 @@ typedef struct DNXHDContext { int bit_depth; // 8, 10 or 0 if not initialized at all. int is_444; int mbaff; + int act; void (*decode_dct_block)(const struct DNXHDContext *ctx, RowContext *row, int16_t *block, int n, int qscale); @@ -198,6 +199,11 @@ static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, av_log(ctx->avctx, AV_LOG_WARNING, "Adaptive MB interlace flag in an unsupported profile.\n"); + ctx->act = buf[0x2C] & 7; + if (ctx->act && ctx->cid_table->cid != 1256) + av_log(ctx->avctx, AV_LOG_WARNING, + "Adaptive color transform in an unsupported profile.\n"); + // make sure profile size constraints are respected // DNx100 allows 1920->1440 and 1280->960 subsampling if (ctx->width != ctx->cid_table->width) { @@ -368,7 +374,7 @@ static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, int dct_linesize_chroma = frame->linesize[1]; uint8_t *dest_y, *dest_u, *dest_v; int dct_y_offset, dct_x_offset; - int qscale, i; + int qscale, i, act; int interlaced_mb = 0; if (ctx->mbaff) { @@ -376,7 +382,15 @@ static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row, qscale = get_bits(&row->gb, 10); } else qscale = get_bits(&row->gb, 11); - skip_bits1(&row->gb); + act = get_bits1(&row->gb); + if (act) { + static int warned = 0; + if (!warned) { + warned = 1; + av_log(ctx->avctx, AV_LOG_ERROR, + "Unsupported adaptive color transform, patch welcome.\n"); + } + } if (qscale != row->last_qscale) { for (i = 0; i < 64; i++) { -- 2.5.3.windows.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel