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@ -1489,6 +1489,57 @@ static void mov_parse_stsd_subtitle(MOVContext *c, AVIOContext *pb, |
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st->codec->height = sc->height; |
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} |
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static uint32_t yuv_to_rgba(uint32_t ycbcr) |
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{ |
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uint8_t r, g, b; |
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int y, cb, cr; |
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y = (ycbcr >> 16) & 0xFF; |
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cr = (ycbcr >> 8) & 0xFF; |
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cb = ycbcr & 0xFF; |
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b = av_clip_uint8(1.164 * (y - 16) + 2.018 * (cb - 128)); |
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g = av_clip_uint8(1.164 * (y - 16) - 0.813 * (cr - 128) - 0.391 * (cb - 128)); |
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r = av_clip_uint8(1.164 * (y - 16) + 1.596 * (cr - 128)); |
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return (r << 16) | (g << 8) | b; |
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} |
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static int mov_rewrite_dvd_sub_extradata(AVStream *st) |
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{ |
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char buf[256] = {0}; |
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uint8_t *src = st->codec->extradata; |
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int i; |
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if (st->codec->extradata_size != 64) |
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return 0; |
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if (st->codec->width > 0 && st->codec->height > 0) |
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snprintf(buf, sizeof(buf), "size: %dx%d\n", |
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st->codec->width, st->codec->height); |
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av_strlcat(buf, "palette: ", sizeof(buf)); |
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for (i = 0; i < 16; i++) { |
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uint32_t yuv = AV_RB32(src + i * 4); |
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uint32_t rgba = yuv_to_rgba(yuv); |
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av_strlcatf(buf, sizeof(buf), "%06x%s", rgba, i != 15 ? ", " : ""); |
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} |
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if (av_strlcat(buf, "\n", sizeof(buf)) >= sizeof(buf)) |
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return 0; |
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av_freep(&st->codec->extradata); |
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st->codec->extradata_size = 0; |
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st->codec->extradata = av_mallocz(strlen(buf) + FF_INPUT_BUFFER_PADDING_SIZE); |
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if (!st->codec->extradata) |
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return AVERROR(ENOMEM); |
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st->codec->extradata_size = strlen(buf); |
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memcpy(st->codec->extradata, buf, st->codec->extradata_size); |
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return 0; |
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} |
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static int mov_parse_stsd_data(MOVContext *c, AVIOContext *pb, |
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AVStream *st, MOVStreamContext *sc, |
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int size) |
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@ -3430,6 +3481,10 @@ static int mov_read_header(AVFormatContext *s) |
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st->codec->width = sc->width; |
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st->codec->height = sc->height; |
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} |
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if (st->codec->codec_id == AV_CODEC_ID_DVD_SUBTITLE) { |
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if ((err = mov_rewrite_dvd_sub_extradata(st)) < 0) |
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return err; |
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} |
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} |
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} |
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