diff options
Diffstat (limited to 'libavcodec/vc1.c')
| -rw-r--r-- | libavcodec/vc1.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c index 8bd6647..27cd010 100644 --- a/libavcodec/vc1.c +++ b/libavcodec/vc1.c @@ -280,6 +280,28 @@ static int vop_dquant_decoding(VC1Context *v) static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb); +static void simple_idct_put_rangered(uint8_t *dest, int line_size, DCTELEM *block) +{ + int i; + ff_simple_idct(block); + for (i = 0; i < 64; i++) block[i] = (block[i] - 64) << 1; + ff_put_pixels_clamped_c(block, dest, line_size); +} + +static void simple_idct_put_signed(uint8_t *dest, int line_size, DCTELEM *block) +{ + ff_simple_idct(block); + ff_put_signed_pixels_clamped_c(block, dest, line_size); +} + +static void simple_idct_put_signed_rangered(uint8_t *dest, int line_size, DCTELEM *block) +{ + int i; + ff_simple_idct(block); + for (i = 0; i < 64; i++) block[i] <<= 1; + ff_put_signed_pixels_clamped_c(block, dest, line_size); +} + /** * Decode Simple/Main Profiles sequence header * @see Figure 7-8, p16-17 @@ -337,7 +359,11 @@ int vc1_decode_sequence_header(AVCodecContext *avctx, VC1Context *v, GetBitConte v->res_fasttx = get_bits1(gb); if (!v->res_fasttx) { - v->vc1dsp.vc1_inv_trans_8x8 = ff_simple_idct; + v->vc1dsp.vc1_inv_trans_8x8_add = ff_simple_idct_add; + v->vc1dsp.vc1_inv_trans_8x8_put[0] = ff_simple_idct_put; + v->vc1dsp.vc1_inv_trans_8x8_put[1] = simple_idct_put_rangered; + v->vc1dsp.vc1_inv_trans_8x8_put_signed[0] = simple_idct_put_signed; + v->vc1dsp.vc1_inv_trans_8x8_put_signed[1] = simple_idct_put_signed_rangered; v->vc1dsp.vc1_inv_trans_8x4 = ff_simple_idct84_add; v->vc1dsp.vc1_inv_trans_4x8 = ff_simple_idct48_add; v->vc1dsp.vc1_inv_trans_4x4 = ff_simple_idct44_add; |
