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bink: make IDCT take 32-bit input

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Since IDCT transforming 32-bit input to 8-bit output is unusual and unpractical
for most codecs, move Bink IDCT into separate context. Get rid of an additional
permutation table while at it since SIMD support for Bink IDCT is unlikely to
be implemented in foreseeable future.
Quantisation tables also have to change type to signed for proper
dequantisation of DCT coefficients.

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Kostya Shishkov
2011-07-23 15:46:35 +02:00
committed by Mans Rullgard
parent 001e600c3b
commit 2968bedf12
6 changed files with 86 additions and 43 deletions
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4
libavcodec/binkdata.h
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@@ -285,7 +285,7 @@ static const uint8_t bink_patterns[16][64] = {
}
};
static const uint32_t bink_intra_quant[16][64] = {
static const int32_t bink_intra_quant[16][64] = {
{
0x010000, 0x016315, 0x01E83D, 0x02A535, 0x014E7B, 0x016577, 0x02F1E6, 0x02724C,
0x010000, 0x00EEDA, 0x024102, 0x017F9B, 0x00BE80, 0x00611E, 0x01083C, 0x00A552,
@@ -448,7 +448,7 @@ static const uint32_t bink_intra_quant[16][64] = {
},
};
static const uint32_t bink_inter_quant[16][64] = {
static const int32_t bink_inter_quant[16][64] = {
{
0x010000, 0x017946, 0x01A5A9, 0x0248DC, 0x016363, 0x0152A7, 0x0243EC, 0x0209EA,
0x012000, 0x00E248, 0x01BBDA, 0x015CBC, 0x00A486, 0x0053E0, 0x00F036, 0x008095,