mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
9bde778e73
Since mplayer always define CONFIG_GPL, this commit should not change anything for mplayer. Originally committed as revision 21699 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
408 lines
13 KiB
C
408 lines
13 KiB
C
#include "avutil.h"
|
|
#include "swscale.h"
|
|
#include "swscale_internal.h"
|
|
|
|
#define YTABLE_MIN 384
|
|
|
|
/**
|
|
* YUV -> RGB conversion matrixes (inverse of table 6.9 in MPEG2 standard)
|
|
*
|
|
* An YUV -> RGB conversion matrix is in the form
|
|
* | 1 0 Rv |
|
|
* | 1 Gu Gv |
|
|
* | 1 Bu 0 |
|
|
*
|
|
* Inverse_Table_6_9 stores | Rv Bu Gv Gu | * 255/224*2^16.
|
|
* \arg Maximum Rv value: 117570
|
|
* \arg Maximum Bu value: 138420
|
|
* \arg Maximum Gv + Gu value: 25642 + 53281 = 78923
|
|
*
|
|
* These values are needed to allocate table_{r, g, b}. If you modify
|
|
* this table, please update allocate_tables() accordingly
|
|
*/
|
|
const int32_t Inverse_Table_6_9[8][4] = {
|
|
{0, 0, 0, 0}, /* no sequence_display_extension */
|
|
{117500, 138420, -13985, -34933}, /* ITU-R Rec. 709 (1990) */
|
|
{0, 0, 0, 0}, /* unspecified */
|
|
{0, 0, 0, 0}, /* reserved */
|
|
{104480, 132820, -24811, -53150}, /* FCC */
|
|
{104570, 132210, -25642, -53281}, /* ITU-R Rec. 624-4 System B, G */
|
|
{104570, 132210, -25642, -53281}, /* SMPTE 170M */
|
|
{117570, 136230, -16892, -35552} /* SMPTE 240M (1987) */
|
|
};
|
|
|
|
|
|
/**
|
|
* Dithering matrixes (these are bayer ordered dither matrixes
|
|
* with some manual changes by Michael)
|
|
*/
|
|
const uint8_t __attribute__((aligned(8))) dither_2x2_4[2][8]={
|
|
{ 1, 3, 1, 3, 1, 3, 1, 3, },
|
|
{ 2, 0, 2, 0, 2, 0, 2, 0, },
|
|
};
|
|
|
|
const uint8_t __attribute__((aligned(8))) dither_2x2_8[2][8]={
|
|
{ 6, 2, 6, 2, 6, 2, 6, 2, },
|
|
{ 0, 4, 0, 4, 0, 4, 0, 4, },
|
|
};
|
|
|
|
const uint8_t __attribute__((aligned(8))) dither_8x8_32[8][8]={
|
|
{ 17, 9, 23, 15, 16, 8, 22, 14, },
|
|
{ 5, 29, 3, 27, 4, 28, 2, 26, },
|
|
{ 21, 13, 19, 11, 20, 12, 18, 10, },
|
|
{ 0, 24, 6, 30, 1, 25, 7, 31, },
|
|
{ 16, 8, 22, 14, 17, 9, 23, 15, },
|
|
{ 4, 28, 2, 26, 5, 29, 3, 27, },
|
|
{ 20, 12, 18, 10, 21, 13, 19, 11, },
|
|
{ 1, 25, 7, 31, 0, 24, 6, 30, },
|
|
};
|
|
|
|
#if 0
|
|
const uint8_t __attribute__((aligned(8))) dither_8x8_64[8][8]={
|
|
{ 0, 48, 12, 60, 3, 51, 15, 63, },
|
|
{ 32, 16, 44, 28, 35, 19, 47, 31, },
|
|
{ 8, 56, 4, 52, 11, 59, 7, 55, },
|
|
{ 40, 24, 36, 20, 43, 27, 39, 23, },
|
|
{ 2, 50, 14, 62, 1, 49, 13, 61, },
|
|
{ 34, 18, 46, 30, 33, 17, 45, 29, },
|
|
{ 10, 58, 6, 54, 9, 57, 5, 53, },
|
|
{ 42, 26, 38, 22, 41, 25, 37, 21, },
|
|
};
|
|
#endif
|
|
|
|
const uint8_t __attribute__((aligned(8))) dither_8x8_73[8][8]={
|
|
{ 0, 55, 14, 68, 3, 58, 17, 72, },
|
|
{ 37, 18, 50, 32, 40, 22, 54, 35, },
|
|
{ 9, 64, 5, 59, 13, 67, 8, 63, },
|
|
{ 46, 27, 41, 23, 49, 31, 44, 26, },
|
|
{ 2, 57, 16, 71, 1, 56, 15, 70, },
|
|
{ 39, 21, 52, 34, 38, 19, 51, 33, },
|
|
{ 11, 66, 7, 62, 10, 65, 6, 60, },
|
|
{ 48, 30, 43, 25, 47, 29, 42, 24, },
|
|
};
|
|
|
|
#if 0
|
|
const uint8_t __attribute__((aligned(8))) dither_8x8_128[8][8]={
|
|
{ 68, 36, 92, 60, 66, 34, 90, 58, },
|
|
{ 20, 116, 12, 108, 18, 114, 10, 106, },
|
|
{ 84, 52, 76, 44, 82, 50, 74, 42, },
|
|
{ 0, 96, 24, 120, 6, 102, 30, 126, },
|
|
{ 64, 32, 88, 56, 70, 38, 94, 62, },
|
|
{ 16, 112, 8, 104, 22, 118, 14, 110, },
|
|
{ 80, 48, 72, 40, 86, 54, 78, 46, },
|
|
{ 4, 100, 28, 124, 2, 98, 26, 122, },
|
|
};
|
|
#endif
|
|
|
|
#if 1
|
|
const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
|
|
{117, 62, 158, 103, 113, 58, 155, 100, },
|
|
{ 34, 199, 21, 186, 31, 196, 17, 182, },
|
|
{144, 89, 131, 76, 141, 86, 127, 72, },
|
|
{ 0, 165, 41, 206, 10, 175, 52, 217, },
|
|
{110, 55, 151, 96, 120, 65, 162, 107, },
|
|
{ 28, 193, 14, 179, 38, 203, 24, 189, },
|
|
{138, 83, 124, 69, 148, 93, 134, 79, },
|
|
{ 7, 172, 48, 213, 3, 168, 45, 210, },
|
|
};
|
|
#elif 1
|
|
// tries to correct a gamma of 1.5
|
|
const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
|
|
{ 0, 143, 18, 200, 2, 156, 25, 215, },
|
|
{ 78, 28, 125, 64, 89, 36, 138, 74, },
|
|
{ 10, 180, 3, 161, 16, 195, 8, 175, },
|
|
{109, 51, 93, 38, 121, 60, 105, 47, },
|
|
{ 1, 152, 23, 210, 0, 147, 20, 205, },
|
|
{ 85, 33, 134, 71, 81, 30, 130, 67, },
|
|
{ 14, 190, 6, 171, 12, 185, 5, 166, },
|
|
{117, 57, 101, 44, 113, 54, 97, 41, },
|
|
};
|
|
#elif 1
|
|
// tries to correct a gamma of 2.0
|
|
const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
|
|
{ 0, 124, 8, 193, 0, 140, 12, 213, },
|
|
{ 55, 14, 104, 42, 66, 19, 119, 52, },
|
|
{ 3, 168, 1, 145, 6, 187, 3, 162, },
|
|
{ 86, 31, 70, 21, 99, 39, 82, 28, },
|
|
{ 0, 134, 11, 206, 0, 129, 9, 200, },
|
|
{ 62, 17, 114, 48, 58, 16, 109, 45, },
|
|
{ 5, 181, 2, 157, 4, 175, 1, 151, },
|
|
{ 95, 36, 78, 26, 90, 34, 74, 24, },
|
|
};
|
|
#else
|
|
// tries to correct a gamma of 2.5
|
|
const uint8_t __attribute__((aligned(8))) dither_8x8_220[8][8]={
|
|
{ 0, 107, 3, 187, 0, 125, 6, 212, },
|
|
{ 39, 7, 86, 28, 49, 11, 102, 36, },
|
|
{ 1, 158, 0, 131, 3, 180, 1, 151, },
|
|
{ 68, 19, 52, 12, 81, 25, 64, 17, },
|
|
{ 0, 119, 5, 203, 0, 113, 4, 195, },
|
|
{ 45, 9, 96, 33, 42, 8, 91, 30, },
|
|
{ 2, 172, 1, 144, 2, 165, 0, 137, },
|
|
{ 77, 23, 60, 15, 72, 21, 56, 14, },
|
|
};
|
|
#endif
|
|
|
|
static int get_entry_size(int bpp)
|
|
{
|
|
switch(bpp) {
|
|
case 32:
|
|
return 4;
|
|
case 16:
|
|
case 15:
|
|
return 2;
|
|
case 24:
|
|
case 8:
|
|
case 4:
|
|
case 1:
|
|
return 1;
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Allocate table_r, table_g, and table_b
|
|
*
|
|
* For cache efficency reasons, these three tables are allocated
|
|
* together, so that they are contiguous in memory
|
|
*
|
|
* table_r is indexed in the range
|
|
* [-128 * 117570 / 76309, 255 + 127 * 117570 / 76309] =
|
|
* [-197.21, 451.67] ---> [-198, 452]
|
|
* table_b is indexed in the range
|
|
* [-128 * 138420 / 76309, 255 + 127 * 138420 / 76309] =
|
|
* [232.18, 485.37] ---> [-233, 486]
|
|
* table_g is indexed in the range
|
|
* [-128 * 78923 / 76309, 255 + 127 * 78923 / 76309] =
|
|
* [-132.38, 386.35] ---> [-133, 387]
|
|
*
|
|
* Please look at the comments after Inverse_Table_6_9 to see where these
|
|
* numbers are coming from.
|
|
*/
|
|
static void *allocate_tables(uint8_t **table_r, uint8_t **table_g, uint8_t **table_b, int bpp)
|
|
{
|
|
uint8_t *table;
|
|
int entry_size;
|
|
|
|
entry_size = get_entry_size(bpp);
|
|
|
|
/* First allocate the memory... */
|
|
switch (bpp) {
|
|
case 32:
|
|
case 15:
|
|
case 16:
|
|
case 8:
|
|
case 4:
|
|
table = av_malloc((198 + 452 + 233 + 486 + 133 + 387) * entry_size);
|
|
break;
|
|
case 24:
|
|
table = av_malloc(256 + 2 * 233);
|
|
break;
|
|
case 1:
|
|
table = av_malloc (256 * 2);
|
|
break;
|
|
default:
|
|
table = NULL;
|
|
}
|
|
if (table == NULL) {
|
|
MSG_ERR("Cannot allocate memory for the YUV -> RGB tables!\n");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* ...and then, assign the table_* value */
|
|
switch (bpp) {
|
|
case 32:
|
|
case 15:
|
|
case 16:
|
|
case 8:
|
|
case 4:
|
|
*table_r = table + 198 * entry_size;
|
|
*table_b = table + (198 + 452 + 133 + 387 + 233) * entry_size;
|
|
*table_g = table + (198 + 452 + 133) * entry_size;
|
|
break;
|
|
case 24:
|
|
*table_r = *table_g = *table_b = table + 233;
|
|
break;
|
|
case 1:
|
|
*table_g = table;
|
|
*table_r = *table_b = NULL;
|
|
break;
|
|
}
|
|
|
|
return table;
|
|
}
|
|
|
|
/**
|
|
* Initialize the table_rV, table_gU[i], table_gV, and table_bU fields
|
|
* in SwsContext
|
|
*
|
|
* @param inv_table the YUV -> RGB table (this is a line of Inverse_Table_6_9)
|
|
* @param fullRange 0->MPEG YUV space 1->JPEG YUV space
|
|
*/
|
|
int yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)
|
|
{
|
|
int i;
|
|
static uint8_t ytable[1024];
|
|
int64_t cy, oy;
|
|
int64_t crv, cbu, cgu, cgv;
|
|
int entry_size = 0;
|
|
uint8_t *table_r, *table_g, *table_b;
|
|
int value;
|
|
|
|
if ((inv_table[0] == 0) || (inv_table[1] == 0) || (inv_table[2] == 0) || (inv_table[3] == 0)) {
|
|
MSG_ERR("Invalid YUV ---> RGB table!\n");
|
|
|
|
return -1;
|
|
}
|
|
crv = inv_table[0];
|
|
cbu = inv_table[1];
|
|
cgu = inv_table[2];
|
|
cgv = inv_table[3];
|
|
if (fullRange) {
|
|
cy = 1 << 16;
|
|
oy = 0;
|
|
} else {
|
|
cy = ((1 << 16) * 255) / 219;
|
|
oy= 16 << 16;
|
|
}
|
|
|
|
cy = (cy *contrast )>>16;
|
|
crv= (crv*contrast * saturation)>>32;
|
|
cbu= (cbu*contrast * saturation)>>32;
|
|
cgu= (cgu*contrast * saturation)>>32;
|
|
cgv= (cgv*contrast * saturation)>>32;
|
|
oy -= 256*brightness;
|
|
|
|
for (i = 0; i < 1024; i++) {
|
|
value = (cy*(((i - YTABLE_MIN)<<16) - oy) + (1<<31))>>32;
|
|
ytable[i] = clip_uint8(value);
|
|
}
|
|
|
|
entry_size = get_entry_size(fmt_depth(c->dstFormat));
|
|
av_free(c->yuvTable);
|
|
c->yuvTable = allocate_tables(&table_r, &table_g, &table_b, fmt_depth(c->dstFormat));
|
|
if (c->yuvTable == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
switch (fmt_depth(c->dstFormat)) {
|
|
case 32:
|
|
for (i = -198; i < 256 + 197; i++) {
|
|
value = ytable[i + YTABLE_MIN];
|
|
if (isBGR(c->dstFormat)) {
|
|
value <<= 16;
|
|
}
|
|
((uint32_t *)table_r)[i] = value;
|
|
}
|
|
for (i = -133; i < 256 + 132; i++) {
|
|
((uint32_t *)table_g)[i] = ytable[i + YTABLE_MIN] << 8;
|
|
}
|
|
for (i = -233; i < 256 + 232; i++) {
|
|
value = ytable[i + YTABLE_MIN];
|
|
if (!isBGR(c->dstFormat)) {
|
|
value <<= 16;
|
|
}
|
|
((uint32_t *)table_b)[i] = value;
|
|
}
|
|
break;
|
|
|
|
case 24:
|
|
for (i = -233; i < 256 + 232; i++) {
|
|
((uint8_t * )table_b)[i] = ytable[i + YTABLE_MIN];
|
|
}
|
|
break;
|
|
|
|
case 15:
|
|
case 16:
|
|
for (i = -198; i < 256 + 197; i++) {
|
|
value = ytable[i + YTABLE_MIN] >> 3;
|
|
if (isBGR(c->dstFormat)) {
|
|
value <<= ((fmt_depth(c->dstFormat) == 16) ? 11 : 10);
|
|
}
|
|
((uint16_t *)table_r)[i] = value;
|
|
}
|
|
for (i = -133; i < 256 + 132; i++) {
|
|
value = ytable[i + YTABLE_MIN];
|
|
value >>= ((fmt_depth(c->dstFormat) == 16) ? 2 : 3);
|
|
((uint16_t *)table_g)[i] = value << 5;
|
|
}
|
|
for (i = -233; i < 256 + 232; i++) {
|
|
value = ytable[i + YTABLE_MIN] >> 3;
|
|
if (!isBGR(c->dstFormat)) {
|
|
value <<= ((fmt_depth(c->dstFormat) == 16) ? 11 : 10);
|
|
}
|
|
((uint16_t *)table_b)[i] = value;
|
|
}
|
|
break;
|
|
case 8:
|
|
for (i = -198; i < 256 + 197; i++) {
|
|
value = (ytable[i + YTABLE_MIN - 16] + 18) / 36;
|
|
if (isBGR(c->dstFormat)) {
|
|
value <<= 5;
|
|
}
|
|
((uint8_t *)table_r)[i] = value;
|
|
}
|
|
for (i = -133; i < 256 + 132; i++) {
|
|
value = (ytable[i + YTABLE_MIN - 16] + 18) / 36;
|
|
if (!isBGR(c->dstFormat)) {
|
|
value <<= 1;
|
|
}
|
|
((uint8_t *)table_g)[i] = value << 2;
|
|
}
|
|
for (i = -233; i < 256 + 232; i++) {
|
|
value = (ytable[i + YTABLE_MIN - 37] + 43) / 85;
|
|
if (!isBGR(c->dstFormat)) {
|
|
value <<= 6;
|
|
}
|
|
((uint8_t *)table_b)[i] = value;
|
|
}
|
|
break;
|
|
case 4:
|
|
for (i = -198; i < 256 + 197; i++) {
|
|
value = ytable[i + YTABLE_MIN - 110] >> 7;
|
|
if (isBGR(c->dstFormat)) {
|
|
value <<= 3;
|
|
}
|
|
((uint8_t *)table_r)[i] = value;
|
|
}
|
|
for (i = -133; i < 256 + 132; i++) {
|
|
value = (ytable[i + YTABLE_MIN - 37]+ 43) / 85;
|
|
((uint8_t *)table_g)[i] = value << 1;
|
|
}
|
|
for (i = -233; i < 256 + 232; i++) {
|
|
value = ytable[i + YTABLE_MIN - 110] >> 7;
|
|
if (!isBGR(c->dstFormat)) {
|
|
value <<= 3;
|
|
}
|
|
((uint8_t *)table_b)[i] = value;
|
|
}
|
|
break;
|
|
case 1:
|
|
for (i = 0; i < 256 + 256; i++) {
|
|
value = ytable[i + YTABLE_MIN - 110] >> 7;
|
|
((uint8_t *)table_g)[i] = value;
|
|
}
|
|
break;
|
|
default:
|
|
MSG_ERR("%ibpp not supported by yuv2rgb\n", fmt_depth(c->dstFormat));
|
|
av_free(c->yuvTable);
|
|
c->yuvTable = NULL;
|
|
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < 256; i++) {
|
|
c->table_rV[i] = table_r +
|
|
entry_size * ROUNDED_DIV(crv * (i - 128), 76309);
|
|
c->table_gU[i] = table_g +
|
|
entry_size * ROUNDED_DIV(cgu * (i - 128), 76309);
|
|
c->table_gV[i] = entry_size * ROUNDED_DIV(cgv * (i - 128), 76309);
|
|
c->table_bU[i] = table_b +
|
|
entry_size * ROUNDED_DIV(cbu * (i - 128), 76309);
|
|
}
|
|
|
|
return 0;
|
|
}
|