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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00

Make Interplay palette opaque and increase its dynamics.

This commit is contained in:
Carl Eugen Hoyos 2011-12-27 18:26:31 +01:00
parent 387d86077f
commit ec0dc7e2e0
2 changed files with 116 additions and 112 deletions

View File

@ -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;

View File

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