Improves remuxing support when vp9 decoder is not compiled in. Signed-off-by: James Almer <jamr...@gmail.com> --- libavcodec/vp9_parser.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 97 insertions(+), 1 deletion(-)
diff --git a/libavcodec/vp9_parser.c b/libavcodec/vp9_parser.c index 9531f34a32..b059477747 100644 --- a/libavcodec/vp9_parser.c +++ b/libavcodec/vp9_parser.c @@ -23,15 +23,69 @@ #include "libavutil/intreadwrite.h" #include "libavcodec/get_bits.h" +#include "libavcodec/internal.h" #include "parser.h" +#define VP9_SYNCCODE 0x498342 + +static int read_colorspace_details(AVCodecParserContext *ctx, AVCodecContext *avctx, + GetBitContext *gb) +{ + static const enum AVColorSpace colorspaces[8] = { + AVCOL_SPC_UNSPECIFIED, AVCOL_SPC_BT470BG, AVCOL_SPC_BT709, AVCOL_SPC_SMPTE170M, + AVCOL_SPC_SMPTE240M, AVCOL_SPC_BT2020_NCL, AVCOL_SPC_RESERVED, AVCOL_SPC_RGB, + }; + int bits = avctx->profile <= 1 ? 0 : 1 + get_bits1(gb); // 0:8, 1:10, 2:12 + + avctx->colorspace = colorspaces[get_bits(gb, 3)]; + if (avctx->colorspace == AVCOL_SPC_RGB) { // RGB = profile 1 + static const enum AVPixelFormat pix_fmt_rgb[3] = { + AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12 + }; + if (avctx->profile & 1) { + if (get_bits1(gb)) // reserved bit + return AVERROR_INVALIDDATA; + } else + return AVERROR_INVALIDDATA; + avctx->color_range = AVCOL_RANGE_JPEG; + ctx->format = pix_fmt_rgb[bits]; + } else { + static const enum AVPixelFormat pix_fmt_for_ss[3][2 /* v */][2 /* h */] = { + { { AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P }, + { AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV420P } }, + { { AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10 }, + { AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV420P10 } }, + { { AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12 }, + { AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV420P12 } } + }; + avctx->color_range = get_bits1(gb) ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG; + if (avctx->profile & 1) { + int ss_h, ss_v, format; + + ss_h = get_bits1(gb); + ss_v = get_bits1(gb); + format = pix_fmt_for_ss[bits][ss_v][ss_h]; + if (format == AV_PIX_FMT_YUV420P) + // YUV 4:2:0 not supported in profiles 1 and 3 + return AVERROR_INVALIDDATA; + else if (get_bits1(gb)) // color details reserved bit + return AVERROR_INVALIDDATA; + ctx->format = format; + } else { + ctx->format = pix_fmt_for_ss[bits][1][1]; + } + } + + return 0; +} + static int parse(AVCodecParserContext *ctx, AVCodecContext *avctx, const uint8_t **out_data, int *out_size, const uint8_t *data, int size) { GetBitContext gb; - int res, profile, keyframe; + int res, profile, keyframe, invisible, errorres; *out_data = data; *out_size = size; @@ -42,21 +96,63 @@ static int parse(AVCodecParserContext *ctx, profile = get_bits1(&gb); profile |= get_bits1(&gb) << 1; if (profile == 3) profile += get_bits1(&gb); + if (profile > 3) + return size; if (get_bits1(&gb)) { keyframe = 0; + skip_bits(&gb, 3); } else { keyframe = !get_bits1(&gb); } + invisible = !get_bits1(&gb); + errorres = get_bits1(&gb); + if (!keyframe) { + int intraonly = invisible ? get_bits1(&gb) : 0; + if (!errorres) + skip_bits(&gb, 2); + if (intraonly) { + if (get_bits_long(&gb, 24) != VP9_SYNCCODE) // synccode + return size; + avctx->profile = profile; + if (profile >= 1) { + if ((read_colorspace_details(ctx, avctx, &gb)) < 0) + return size; + } else { + ctx->format = AV_PIX_FMT_YUV420P; + avctx->colorspace = AVCOL_SPC_BT470BG; + avctx->color_range = AVCOL_RANGE_MPEG; + } + skip_bits(&gb, 8); // refreshrefmask + ctx->width = get_bits(&gb, 16) + 1; + ctx->height = get_bits(&gb, 16) + 1; + if (get_bits1(&gb)) // display size + skip_bits(&gb, 32); + } + ctx->pict_type = AV_PICTURE_TYPE_P; ctx->key_frame = 0; } else { + if (get_bits_long(&gb, 24) != VP9_SYNCCODE) // synccode + return size; + avctx->profile = profile; + if (read_colorspace_details(ctx, avctx, &gb) < 0) + return size; + ctx->width = get_bits(&gb, 16) + 1; + ctx->height = get_bits(&gb, 16) + 1; + if (get_bits1(&gb)) // display size + skip_bits(&gb, 32); + ctx->pict_type = AV_PICTURE_TYPE_I; ctx->key_frame = 1; } + if (ctx->width && (!avctx->width || !avctx->height || + !avctx->coded_width || !avctx->coded_height)) + ff_set_dimensions(avctx, ctx->width, ctx->height); + return size; } -- 2.15.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel