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prores_raw: label every field

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This labels every field and completes the reverse engineering.
This commit is contained in:
Lynne committed 2026-05-17 12:17:19 +09:00
1 parent 9c40552965
commit 3b9ab7f119
1 file changed
+16 -9
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libavcodec/prores_raw.c
+16 -9
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@@ -366,7 +366,7 @@ static int decode_frame(AVCodecContext *avctx,
bytestream2_init(&gb_hdr, gb.buffer, header_len - 2);
bytestream2_skip(&gb, header_len - 2);
bytestream2_skip(&gb_hdr, 1);
bytestream2_skip(&gb_hdr, 1); /* 1 reserved byte */
s->version = bytestream2_get_byte(&gb_hdr);
if (s->version > 1) {
avpriv_request_sample(avctx, "Version %d", s->version);
@@ -405,14 +405,21 @@ static int decode_frame(AVCodecContext *avctx,
avctx->pix_fmt = ret;
}
bytestream2_skip(&gb_hdr, 1 * 4);
bytestream2_skip(&gb_hdr, 2); /* & 0x3 */
bytestream2_skip(&gb_hdr, 2);
bytestream2_skip(&gb_hdr, 4);
bytestream2_skip(&gb_hdr, 4);
bytestream2_skip(&gb_hdr, 4 * 3 * 3);
bytestream2_skip(&gb_hdr, 4);
bytestream2_skip(&gb_hdr, 2);
bytestream2_skip(&gb_hdr, 1 * 4); /* 4 reserved bytes */
/* BayerPattern: 0=RGGB, 1/2/3 = alternates */
int bayer_pattern = bytestream2_get_be16(&gb_hdr) & 0x3;
if (bayer_pattern != 0) {
avpriv_request_sample(avctx, "Bayer pattern %d", bayer_pattern);
return AVERROR_PATCHWELCOME;
}
bytestream2_skip(&gb_hdr, 2); /* senselValueRange (white_level = value + 0x100, black_level = 0x100) */
bytestream2_skip(&gb_hdr, 4); /* WhiteBalanceRedFactor (float, pre-debayer R gain) */
bytestream2_skip(&gb_hdr, 4); /* WhiteBalanceBlueFactor (float, pre-debayer B gain) */
bytestream2_skip(&gb_hdr, 4 * 3 * 3); /* ColorMatrix (3x3 float, camera RGB -> Rec.2020 linear, row-major) */
bytestream2_skip(&gb_hdr, 4); /* GainFactor (float, post-matrix scene-linear scale) */
bytestream2_skip(&gb_hdr, 2); /* WhiteBalanceCCT (Kelvin, informational) */
/* Flags */
int flags = bytestream2_get_be16(&gb_hdr);