Skip to content

F
ffmpeg.wasm-core
Commit 115e291b authored by Michael Niedermayer's avatar Michael Niedermayer
Browse files
Options

swscale: move main swscale wraper to swscale.c 

It never belonged to swscale_unscaled.c
Signed-off-by: 's avatarMichael Niedermayer <michaelni@gmx.at>
parent 59003fe7
Hide whitespace changes
Inline Side-by-side
Showing with 201 additions and 200 deletions
libswscale/swscale.c
View file @ 115e291b
......@@ -739,3 +739,204 @@ SwsFunc ff_getSwsFunc(SwsContext *c)
return swScale;
}
static void reset_ptr(const uint8_t *src[], int format)
{
if (!isALPHA(format))
src[3] = NULL;
if (!isPlanar(format)) {
src[3] = src[2] = NULL;
if (!usePal(format))
src[1] = NULL;
}
}
static int check_image_pointers(const uint8_t * const data[4], enum PixelFormat pix_fmt,
const int linesizes[4])
{
const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
int i;
for (i = 0; i < 4; i++) {
int plane = desc->comp[i].plane;
if (!data[plane] || !linesizes[plane])
return 0;
}
return 1;
}
/**
* swscale wrapper, so we don't need to export the SwsContext.
* Assumes planar YUV to be in YUV order instead of YVU.
*/
int attribute_align_arg sws_scale(struct SwsContext *c,
const uint8_t * const srcSlice[],
const int srcStride[], int srcSliceY,
int srcSliceH, uint8_t *const dst[],
const int dstStride[])
{
int i, ret;
const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
uint8_t *rgb0_tmp = NULL;
// do not mess up sliceDir if we have a "trailing" 0-size slice
if (srcSliceH == 0)
return 0;
if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
return 0;
}
if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
return 0;
}
if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
return 0;
}
if (c->sliceDir == 0) {
if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
}
if (usePal(c->srcFormat)) {
for (i = 0; i < 256; i++) {
int p, r, g, b, y, u, v, a = 0xff;
if (c->srcFormat == PIX_FMT_PAL8) {
p = ((const uint32_t *)(srcSlice[1]))[i];
a = (p >> 24) & 0xFF;
r = (p >> 16) & 0xFF;
g = (p >> 8) & 0xFF;
b = p & 0xFF;
} else if (c->srcFormat == PIX_FMT_RGB8) {
r = ( i >> 5 ) * 36;
g = ((i >> 2) & 7) * 36;
b = ( i & 3) * 85;
} else if (c->srcFormat == PIX_FMT_BGR8) {
b = ( i >> 6 ) * 85;
g = ((i >> 3) & 7) * 36;
r = ( i & 7) * 36;
} else if (c->srcFormat == PIX_FMT_RGB4_BYTE) {
r = ( i >> 3 ) * 255;
g = ((i >> 1) & 3) * 85;
b = ( i & 1) * 255;
} else if (c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_GRAY8A) {
r = g = b = i;
} else {
av_assert1(c->srcFormat == PIX_FMT_BGR4_BYTE);
b = ( i >> 3 ) * 255;
g = ((i >> 1) & 3) * 85;
r = ( i & 1) * 255;
}
#define RGB2YUV_SHIFT 15
#define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
c->pal_yuv[i]= y + (u<<8) + (v<<16) + (a<<24);
switch (c->dstFormat) {
case PIX_FMT_BGR32:
#if !HAVE_BIGENDIAN
case PIX_FMT_RGB24:
#endif
c->pal_rgb[i]= r + (g<<8) + (b<<16) + (a<<24);
break;
case PIX_FMT_BGR32_1:
#if HAVE_BIGENDIAN
case PIX_FMT_BGR24:
#endif
c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24);
break;
case PIX_FMT_RGB32_1:
#if HAVE_BIGENDIAN
case PIX_FMT_RGB24:
#endif
c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24);
break;
case PIX_FMT_RGB32:
#if !HAVE_BIGENDIAN
case PIX_FMT_BGR24:
#endif
default:
c->pal_rgb[i]= b + (g<<8) + (r<<16) + (a<<24);
}
}
}
if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
uint8_t *base;
int x,y;
rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
for (y=0; y<srcSliceH; y++){
memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
base[ srcStride[0]*y + x] = 0xFF;
}
}
src2[0] = base;
}
// copy strides, so they can safely be modified
if (c->sliceDir == 1) {
// slices go from top to bottom
int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
srcStride[3] };
int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
dstStride[3] };
reset_ptr(src2, c->srcFormat);
reset_ptr((void*)dst2, c->dstFormat);
/* reset slice direction at end of frame */
if (srcSliceY + srcSliceH == c->srcH)
c->sliceDir = 0;
ret = c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
dstStride2);
} else {
// slices go from bottom to top => we flip the image internally
int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
-srcStride[3] };
int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
-dstStride[3] };
src2[0] += (srcSliceH - 1) * srcStride[0];
if (!usePal(c->srcFormat))
src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
src2[3] += (srcSliceH - 1) * srcStride[3];
dst2[0] += ( c->dstH - 1) * dstStride[0];
dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
dst2[3] += ( c->dstH - 1) * dstStride[3];
reset_ptr(src2, c->srcFormat);
reset_ptr((void*)dst2, c->dstFormat);
/* reset slice direction at end of frame */
if (!srcSliceY)
c->sliceDir = 0;
ret = c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
srcSliceH, dst2, dstStride2);
}
av_free(rgb0_tmp);
return ret;
}
libswscale/swscale_unscaled.c
View file @ 115e291b
......@@ -34,17 +34,6 @@
#include "libavutil/pixdesc.h"
#include "libavutil/avassert.h"
#define RGB2YUV_SHIFT 15
#define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
#define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
DECLARE_ALIGNED(8, const uint8_t, dithers)[8][8][8]={
{
{ 0, 1, 0, 1, 0, 1, 0, 1,},
......@@ -1060,195 +1049,6 @@ void ff_get_unscaled_swscale(SwsContext *c)
ff_swscale_get_unscaled_altivec(c);
}
static void reset_ptr(const uint8_t *src[], int format)
{
if (!isALPHA(format))
src[3] = NULL;
if (!isPlanar(format)) {
src[3] = src[2] = NULL;
if (!usePal(format))
src[1] = NULL;
}
}
static int check_image_pointers(const uint8_t * const data[4], enum PixelFormat pix_fmt,
const int linesizes[4])
{
const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
int i;
for (i = 0; i < 4; i++) {
int plane = desc->comp[i].plane;
if (!data[plane] || !linesizes[plane])
return 0;
}
return 1;
}
/**
* swscale wrapper, so we don't need to export the SwsContext.
* Assumes planar YUV to be in YUV order instead of YVU.
*/
int attribute_align_arg sws_scale(struct SwsContext *c,
const uint8_t * const srcSlice[],
const int srcStride[], int srcSliceY,
int srcSliceH, uint8_t *const dst[],
const int dstStride[])
{
int i, ret;
const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
uint8_t *rgb0_tmp = NULL;
// do not mess up sliceDir if we have a "trailing" 0-size slice
if (srcSliceH == 0)
return 0;
if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
return 0;
}
if (!check_image_pointers((const uint8_t* const*)dst, c->dstFormat, dstStride)) {
av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
return 0;
}
if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
return 0;
}
if (c->sliceDir == 0) {
if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
}
if (usePal(c->srcFormat)) {
for (i = 0; i < 256; i++) {
int p, r, g, b, y, u, v, a = 0xff;
if (c->srcFormat == PIX_FMT_PAL8) {
p = ((const uint32_t *)(srcSlice[1]))[i];
a = (p >> 24) & 0xFF;
r = (p >> 16) & 0xFF;
g = (p >> 8) & 0xFF;
b = p & 0xFF;
} else if (c->srcFormat == PIX_FMT_RGB8) {
r = ( i >> 5 ) * 36;
g = ((i >> 2) & 7) * 36;
b = ( i & 3) * 85;
} else if (c->srcFormat == PIX_FMT_BGR8) {
b = ( i >> 6 ) * 85;
g = ((i >> 3) & 7) * 36;
r = ( i & 7) * 36;
} else if (c->srcFormat == PIX_FMT_RGB4_BYTE) {
r = ( i >> 3 ) * 255;
g = ((i >> 1) & 3) * 85;
b = ( i & 1) * 255;
} else if (c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_GRAY8A) {
r = g = b = i;
} else {
av_assert1(c->srcFormat == PIX_FMT_BGR4_BYTE);
b = ( i >> 3 ) * 255;
g = ((i >> 1) & 3) * 85;
r = ( i & 1) * 255;
}
y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
c->pal_yuv[i]= y + (u<<8) + (v<<16) + (a<<24);
switch (c->dstFormat) {
case PIX_FMT_BGR32:
#if !HAVE_BIGENDIAN
case PIX_FMT_RGB24:
#endif
c->pal_rgb[i]= r + (g<<8) + (b<<16) + (a<<24);
break;
case PIX_FMT_BGR32_1:
#if HAVE_BIGENDIAN
case PIX_FMT_BGR24:
#endif
c->pal_rgb[i]= a + (r<<8) + (g<<16) + (b<<24);
break;
case PIX_FMT_RGB32_1:
#if HAVE_BIGENDIAN
case PIX_FMT_RGB24:
#endif
c->pal_rgb[i]= a + (b<<8) + (g<<16) + (r<<24);
break;
case PIX_FMT_RGB32:
#if !HAVE_BIGENDIAN
case PIX_FMT_BGR24:
#endif
default:
c->pal_rgb[i]= b + (g<<8) + (r<<16) + (a<<24);
}
}
}
if (c->src0Alpha && !c->dst0Alpha && isALPHA(c->dstFormat)) {
uint8_t *base;
int x,y;
rgb0_tmp = av_malloc(FFABS(srcStride[0]) * srcSliceH + 32);
base = srcStride[0] < 0 ? rgb0_tmp - srcStride[0] * (srcSliceH-1) : rgb0_tmp;
for (y=0; y<srcSliceH; y++){
memcpy(base + srcStride[0]*y, src2[0] + srcStride[0]*y, 4*c->srcW);
for (x=c->src0Alpha-1; x<4*c->srcW; x+=4) {
base[ srcStride[0]*y + x] = 0xFF;
}
}
src2[0] = base;
}
// copy strides, so they can safely be modified
if (c->sliceDir == 1) {
// slices go from top to bottom
int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
srcStride[3] };
int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
dstStride[3] };
reset_ptr(src2, c->srcFormat);
reset_ptr((void*)dst2, c->dstFormat);
/* reset slice direction at end of frame */
if (srcSliceY + srcSliceH == c->srcH)
c->sliceDir = 0;
ret = c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
dstStride2);
} else {
// slices go from bottom to top => we flip the image internally
int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
-srcStride[3] };
int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
-dstStride[3] };
src2[0] += (srcSliceH - 1) * srcStride[0];
if (!usePal(c->srcFormat))
src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
src2[3] += (srcSliceH - 1) * srcStride[3];
dst2[0] += ( c->dstH - 1) * dstStride[0];
dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
dst2[3] += ( c->dstH - 1) * dstStride[3];
reset_ptr(src2, c->srcFormat);
reset_ptr((void*)dst2, c->dstFormat);
/* reset slice direction at end of frame */
if (!srcSliceY)
c->sliceDir = 0;
ret = c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
srcSliceH, dst2, dstStride2);
}
av_free(rgb0_tmp);
return ret;
}
/* Convert the palette to the same packed 32-bit format as the palette */
void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
int num_pixels, const uint8_t *palette)
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment