32 int16_t
basis[64],
int scale)
37 for (
i = 0;
i < 8 * 8;
i++) {
38 int b = rem[
i] + ((
basis[
i] * scale +
45 sum += (
w *
b) * (
w *
b) >> 4;
54 for (
i = 0;
i < 8 * 8;
i++)
64 for (
i = 0;
i < 16;
i++) {
65 for (j = 0; j < 16; j += 8) {
76 pix += line_size - 16;
86 for (
i = 0;
i < 16;
i++) {
87 for (j = 0; j < 16; j += 8) {
89 register uint64_t x = *(uint64_t *) pix;
91 s += sq[(x >> 8) & 0xff];
92 s += sq[(x >> 16) & 0xff];
93 s += sq[(x >> 24) & 0xff];
94 s += sq[(x >> 32) & 0xff];
95 s += sq[(x >> 40) & 0xff];
96 s += sq[(x >> 48) & 0xff];
97 s += sq[(x >> 56) & 0xff];
99 register uint32_t x = *(uint32_t *) pix;
101 s += sq[(x >> 8) & 0xff];
102 s += sq[(x >> 16) & 0xff];
103 s += sq[(x >> 24) & 0xff];
104 x = *(uint32_t *) (pix + 4);
106 s += sq[(x >> 8) & 0xff];
107 s += sq[(x >> 16) & 0xff];
108 s += sq[(x >> 24) & 0xff];
112 pix += line_size - 16;
120 int w,
int h,
int sides)
122 uint8_t *ptr = buf, *last_line;
127 memset(ptr -
w, ptr[0],
w);
136 for (
i = 0;
i <
h;
i++)
140 for (
i = 0;
i <
h;
i++)
142 memcpy(last_line + (
i + 1) *
wrap, last_line,
width +
w +
w);
159 d[0] = (
s1[0] +
s1[1] +
s2[0] +
s2[1] + 2) >> 2;
160 d[1] = (
s1[2] +
s1[3] +
s2[2] +
s2[3] + 2) >> 2;
161 d[2] = (
s1[4] +
s1[5] +
s2[4] +
s2[5] + 2) >> 2;
162 d[3] = (
s1[6] +
s1[7] +
s2[6] +
s2[7] + 2) >> 2;
168 d[0] = (
s1[0] +
s1[1] +
s2[0] +
s2[1] + 2) >> 2;
194 d[0] = (
s1[0] +
s1[1] +
s1[2] +
s1[3] +
197 s4[0] +
s4[1] +
s4[2] +
s4[3] + 8) >> 4;
219 for (
i = 0;
i < 8;
i++) {
224 *(dst++) = (
tmp + 32) >> 6;
225 src += 8 - 8 * src_wrap;
228 dst += dst_wrap -
width;
Macro definitions for various function/variable attributes.
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Libavcodec external API header.
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
static int weight(int i, int blen, int offset)
const uint32_t ff_square_tab[512]
static int16_t basis[64][64]
static int try_8x8basis_c(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale)
static int pix_sum_c(uint8_t *pix, int line_size)
static void shrink22(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
static void shrink88(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
static int pix_norm1_c(uint8_t *pix, int line_size)
static void shrink44(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
static void add_8x8basis_c(int16_t rem[64], int16_t basis[64], int scale)
static void draw_edges_8_c(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
av_cold void ff_mpegvideoencdsp_init_arm(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
av_cold void ff_mpegvideoencdsp_init_mips(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
av_cold void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
main external API structure.