aboutsummaryrefslogtreecommitdiff
path: root/src/plugins/ffmpeg/libavcodec/h264dspenc.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/plugins/ffmpeg/libavcodec/h264dspenc.c')
-rw-r--r--src/plugins/ffmpeg/libavcodec/h264dspenc.c81
1 files changed, 0 insertions, 81 deletions
diff --git a/src/plugins/ffmpeg/libavcodec/h264dspenc.c b/src/plugins/ffmpeg/libavcodec/h264dspenc.c
deleted file mode 100644
index 061de5e..0000000
--- a/src/plugins/ffmpeg/libavcodec/h264dspenc.c
+++ /dev/null
@@ -1,81 +0,0 @@
1/*
2 * H.264/MPEG-4 Part 10 (Base profile) encoder.
3 *
4 * DSP functions
5 *
6 * Copyright (c) 2006 Expertisecentrum Digitale Media, UHasselt
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23/**
24 * @file h264dspenc.c
25 * H.264 encoder related DSP utils
26 *
27 */
28
29#include "dsputil.h"
30
31extern const uint8_t ff_div6[52];
32extern const uint8_t ff_rem6[52];
33
34#define H264_DCT_PART1(X) \
35 a = block[0][X]+block[3][X]; \
36 c = block[0][X]-block[3][X]; \
37 b = block[1][X]+block[2][X]; \
38 d = block[1][X]-block[2][X]; \
39 pieces[0][X] = a+b; \
40 pieces[2][X] = a-b; \
41 pieces[1][X] = (c<<1)+d; \
42 pieces[3][X] = c-(d<<1);
43
44#define H264_DCT_PART2(X) \
45 a = pieces[X][0]+pieces[X][3]; \
46 c = pieces[X][0]-pieces[X][3]; \
47 b = pieces[X][1]+pieces[X][2]; \
48 d = pieces[X][1]-pieces[X][2]; \
49 block[0][X] = a+b; \
50 block[2][X] = a-b; \
51 block[1][X] = (c<<1)+d; \
52 block[3][X] = c-(d<<1);
53
54/**
55 * Transform the provided matrix using the H.264 modified DCT.
56 * @note
57 * we'll always work with transposed input blocks, to avoid having to make a
58 * distinction between C and mmx implementations.
59 *
60 * @param block transposed input block
61 */
62static void h264_dct_c(DCTELEM block[4][4])
63{
64 DCTELEM pieces[4][4];
65 DCTELEM a, b, c, d;
66
67 H264_DCT_PART1(0);
68 H264_DCT_PART1(1);
69 H264_DCT_PART1(2);
70 H264_DCT_PART1(3);
71 H264_DCT_PART2(0);
72 H264_DCT_PART2(1);
73 H264_DCT_PART2(2);
74 H264_DCT_PART2(3);
75}
76
77void ff_h264dspenc_init(DSPContext* c, AVCodecContext *avctx)
78{
79 c->h264_dct = h264_dct_c;
80}
81