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