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ffmpeg.wasm-core
Commit ec0dc7e2 authored by Carl Eugen Hoyos's avatar Carl Eugen Hoyos
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Make Interplay palette opaque and increase its dynamics.

parent 387d8607
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Showing with 116 additions and 112 deletions
libavformat/ipmovie.c
View file @ ec0dc7e2
......@@ -456,7 +456,8 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
r = scratch[j++] * 4;
g = scratch[j++] * 4;
b = scratch[j++] * 4;
s->palette[i] = (r << 16) | (g << 8) | (b);
s->palette[i] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
s->palette[i] |= s->palette[i] >> 6 & 0x30303;
}
s->has_palette = 1;
break;
......@@ -524,7 +525,7 @@ static int ipmovie_read_header(AVFormatContext *s,
AVPacket pkt;
AVStream *st;
unsigned char chunk_preamble[CHUNK_PREAMBLE_SIZE];
int chunk_type;
int chunk_type, i;
uint8_t signature_buffer[sizeof(signature)];
avio_read(pb, signature_buffer, sizeof(signature_buffer));
......@@ -542,6 +543,9 @@ static int ipmovie_read_header(AVFormatContext *s,
/* on the first read, this will position the stream at the first chunk */
ipmovie->next_chunk_offset = avio_tell(pb) + 4;
for (i = 0; i < 256; i++)
ipmovie->palette[i] = 0xFFU << 24;
/* process the first chunk which should be CHUNK_INIT_VIDEO */
if (process_ipmovie_chunk(ipmovie, pb, &pkt) != CHUNK_INIT_VIDEO)
return AVERROR_INVALIDDATA;
......
tests/ref/fate/interplay-mve-8bit
View file @ ec0dc7e2
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0, 612563, 414720, 0xb6a3385d
1, 618555, 5888, 0x20d340cd
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0, 618569, 414720, 0x795a3362
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0, 630580, 414720, 0xb5563ce4
1, 636539, 5888, 0xcd3b3bef
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0, 636585, 414720, 0x0c1a00cc
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0, 642591, 414720, 0xcbd467fd
1, 648555, 5888, 0xb82c4fa4
0, 648596, 414720, 0x66784c58
0, 648596, 414720, 0x3bccec29
1, 654563, 5888, 0x05b2443a
0, 654602, 414720, 0x70dbeca8
0, 654602, 414720, 0x92d78db7
1, 660571, 5888, 0x78028172
1, 666580, 5888, 0xdfcac19a
1, 672588, 5888, 0x0761a0b9
......
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