34 #define RGBA(r, g, b, a) ((uint8_t)(r) << 0) | \ 35 ((uint8_t)(g) << 8) | \ 36 ((uint8_t)(b) << 16) | \ 48 tmp = (color0 >> 11) * 255 + 16;
49 r0 = (
uint8_t) ((tmp / 32 + tmp) / 32);
50 tmp = ((color0 & 0x07E0) >> 5) * 255 + 32;
51 g0 = (
uint8_t) ((tmp / 64 + tmp) / 64);
52 tmp = (color0 & 0x001F) * 255 + 16;
53 b0 = (
uint8_t) ((tmp / 32 + tmp) / 32);
55 tmp = (color1 >> 11) * 255 + 16;
56 r1 = (
uint8_t) ((tmp / 32 + tmp) / 32);
57 tmp = ((color1 & 0x07E0) >> 5) * 255 + 32;
58 g1 = (
uint8_t) ((tmp / 64 + tmp) / 64);
59 tmp = (color1 & 0x001F) * 255 + 16;
60 b1 = (
uint8_t) ((tmp / 32 + tmp) / 32);
62 if (dxtn || color0 > color1) {
63 colors[0] =
RGBA(r0, g0, b0, a);
64 colors[1] =
RGBA(r1, g1, b1, a);
65 colors[2] =
RGBA((2 * r0 + r1) / 3,
69 colors[3] =
RGBA((2 * r1 + r0) / 3,
74 colors[0] =
RGBA(r0, g0, b0, a);
75 colors[1] =
RGBA(r1, g1, b1, a);
76 colors[2] =
RGBA((r0 + r1) / 2,
80 colors[3] =
RGBA(0, 0, 0, alpha);
89 uint16_t color0 =
AV_RL16(block + 0);
90 uint16_t color1 =
AV_RL16(block + 2);
91 uint32_t code =
AV_RL32(block + 4);
95 for (y = 0; y < 4; y++) {
96 for (x = 0; x < 4; x++) {
97 uint32_t
pixel = colors[code & 3];
143 uint16_t color0 =
AV_RL16(block + 8);
144 uint16_t color1 =
AV_RL16(block + 10);
145 uint32_t code =
AV_RL32(block + 12);
149 for (y = 0; y < 4; y++) {
150 const uint16_t alpha_code =
AV_RL16(block + 2 * y);
153 alpha_values[0] = ((alpha_code >> 0) & 0x0F) * 17;
154 alpha_values[1] = ((alpha_code >> 4) & 0x0F) * 17;
155 alpha_values[2] = ((alpha_code >> 8) & 0x0F) * 17;
156 alpha_values[3] = ((alpha_code >> 12) & 0x0F) * 17;
158 for (x = 0; x < 4; x++) {
159 uint8_t alpha = alpha_values[x];
160 uint32_t
pixel = colors[code & 3] | (alpha << 24);
177 src[0] = (
uint8_t) r * a / 255;
178 src[1] = (
uint8_t) g * a / 255;
179 src[2] = (
uint8_t) b * a / 255;
199 for (y = 0; y < 4; y++)
200 for (x = 0; x < 4; x++)
240 for (block = 0; block < 2; block++) {
244 for (i = 0; i < 8; i++)
245 dst[i] = (tmp >> (i * 3)) & 0x7;
258 uint16_t color0 =
AV_RL16(block + 8);
259 uint16_t color1 =
AV_RL16(block + 10);
260 uint32_t code =
AV_RL32(block + 12);
268 for (y = 0; y < 4; y++) {
269 for (x = 0; x < 4; x++) {
270 int alpha_code = alpha_indices[x + y * 4];
274 if (alpha_code == 0) {
276 }
else if (alpha_code == 1) {
279 if (alpha0 > alpha1) {
280 alpha = (
uint8_t) (((8 - alpha_code) * alpha0 +
281 (alpha_code - 1) * alpha1) / 7);
283 if (alpha_code == 6) {
285 }
else if (alpha_code == 7) {
288 alpha = (
uint8_t) (((6 - alpha_code) * alpha0 +
289 (alpha_code - 1) * alpha1) / 5);
293 pixel = colors[code & 3] | (alpha << 24);
318 for (y = 0; y < 4; y++)
319 for (x = 0; x < 4; x++)
354 int s = scaled ? (b >> 3) + 1 : 1;
356 int co = (r - 128) / s;
357 int cg = (g - 128) / s;
359 src[0] = av_clip_uint8(y + co - cg);
360 src[1] = av_clip_uint8(y + cg);
361 src[2] = av_clip_uint8(y - co - cg);
362 src[3] = scaled ? 255 :
b;
382 for (y = 0; y < 4; y++)
383 for (x = 0; x < 4; x++)
406 for (y = 0; y < 4; y++)
407 for (x = 0; x < 4; x++)
415 const int *color_tab)
426 for (y = 0; y < 4; y++) {
427 for (x = 0; x < 4; x++) {
428 int i = indices[x + y * 4];
430 int c = color_tab[i];
432 AV_WL32(dst + x * 4 + y * stride, pixel);
446 r0 = ((int8_t) block[0]) + 128;
447 r1 = ((int8_t) block[1]) + 128;
458 color_table[2] = (6 * r0 + 1 * r1) / 7;
459 color_table[3] = (5 * r0 + 2 * r1) / 7;
460 color_table[4] = (4 * r0 + 3 * r1) / 7;
461 color_table[5] = (3 * r0 + 4 * r1) / 7;
462 color_table[6] = (2 * r0 + 5 * r1) / 7;
463 color_table[7] = (1 * r0 + 6 * r1) / 7;
466 color_table[2] = (4 * r0 + 1 * r1) / 5;
467 color_table[3] = (3 * r0 + 2 * r1) / 5;
468 color_table[4] = (2 * r0 + 3 * r1) / 5;
469 color_table[5] = (1 * r0 + 4 * r1) / 5;
471 color_table[7] = 255;
522 for (y = 0; y < 4; y++) {
523 for (x = 0; x < 4; x++) {
525 int r = c0[x * 4 + y * 16];
526 int g = c1[x * 4 + y * 16];
529 int d = (255 * 255 - r * r - g *
g) / 2;
588 for (y = 0; y < 4; y++) {
589 for (x = 0; x < 4; x++) {
int(* dxt5_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static double rint(double x)
static ColorEntry color_table[]
Texture block (4x4) module.
static void rgtc2_block_internal(uint8_t *dst, ptrdiff_t stride, const uint8_t *block, int sign)
static void dxt3_block_internal(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Macro definitions for various function/variable attributes.
static int dxt4_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a DXT4 texture and store the resulting RGBA pixels in 'dst'.
static av_always_inline void ycocg2rgba(uint8_t *src, int scaled)
Convert a YCoCg buffer to RGBA.
static int dxt3_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a DXT3 texture and store the resulting RGBA pixels in 'dst'.
int(* dxt5y_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
int(* dxt3_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
int(* rgtc2s_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
int(* dxt5ys_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
int(* rgtc1u_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static int rgtc2u_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a RGRC2 texture with unsigned components and store the resulting RGBA pixels ...
static int rgtc1u_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a RGRC1 texture with unsigned components and store the resulting RGBA pixels ...
static void dxt1_block_internal(uint8_t *dst, ptrdiff_t stride, const uint8_t *block, uint8_t alpha)
av_cold void ff_texturedsp_init(TextureDSPContext *c)
int(* dxt1a_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static int dxt5y_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a DXT5 texture with classic YCoCg and store the resulting RGBA pixels in 'dst...
static av_always_inline void premult2straight(uint8_t *src)
Convert a premultiplied alpha pixel to a straight alpha pixel.
static av_always_inline void extract_color(uint32_t colors[4], uint16_t color0, uint16_t color1, int dxtn, int alpha)
static int dxt5ys_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a DXT5 texture with scaled YCoCg and store the resulting RGBA pixels in 'dst'...
int(* dxt2_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static void dxt5_block_internal(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static int rgtc2s_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a RGRC2 texture with signed components and store the resulting RGBA pixels in...
int(* dxt1_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
int(* dxt4_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static int dxt2_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a DXT2 texture and store the resulting RGBA pixels in 'dst'.
int(* rgtc1s_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static int dxt5_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a DXT5 texture and store the resulting RGBA pixels in 'dst'.
common internal and external API header
static void rgtc1_block_internal(uint8_t *dst, ptrdiff_t stride, const uint8_t *block, int sign)
int(* rgtc2u_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static void rgtc_block_internal(uint8_t *dst, ptrdiff_t stride, const uint8_t *block, const int *color_tab)
#define FFSWAP(type, a, b)
static int dxn3dc_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a 3Dc texture with unsigned components and store the resulting RGBA pixels in...
static int rgtc1s_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a RGRC1 texture with signed components and store the resulting RGBA pixels in...
static int dxt1a_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a DXT1 with 1-bit alpha texture and store the resulting RGBA pixels in 'dst'...
int(* dxn3dc_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
static void decompress_indices(uint8_t *dst, const uint8_t *src)
Decompress a BC 16x3 index block stored as h g f e d c b a p o n m l k j i.
static int dxt1_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
Decompress one block of a DXT1 texture and store the resulting RGBA pixels in 'dst'.