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vulkan_prores_raw: read the header length rather than assuming its 8

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In all known samples, it is equal to 8.
This commit is contained in:
Lynne
2025-11-15 14:15:19 +01:00
parent 0db891366d
commit a811a6885a
1 changed files with 3 additions and 2 deletions
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5
libavcodec/vulkan/prores_raw_decode.comp
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@@ -206,12 +206,13 @@ void main(void)
uint64_t pkt_offset = uint64_t(pkt_data) + td.offset;
u8vec2buf hdr_data = u8vec2buf(pkt_offset);
int header_len = hdr_data[0].v.x >> 3;
ivec4 size = ivec4(td.size,
pack16(hdr_data[2].v.yx),
pack16(hdr_data[1].v.yx),
pack16(hdr_data[3].v.yx));
size[0] = size[0] - size[1] - size[2] - size[3] - 8;
size[0] = size[0] - size[1] - size[2] - size[3] - header_len;
if (expectEXT(size[0] < 0, false))
return;
@@ -224,7 +225,7 @@ void main(void)
0,
size[2] + size[1]);
init_get_bits(gb, u8buf(pkt_offset + 8 + comp_offset[COMP_ID]),
init_get_bits(gb, u8buf(pkt_offset + header_len + comp_offset[COMP_ID]),
size[COMP_ID]);
read_dc_vals(offs, nb_blocks);