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Commit 07d8e576 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont
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avcodec: split generic YV12/NV12 copy out of SSE2 functions 

This is required by the next commit. This also avoids making two copies
on non-x86 platforms, where USWC optimizations are irrelevant.
parent 7d6a8dd1
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Showing with 149 additions and 96 deletions
modules/codec/avcodec/copy.c
View file @ 07d8e576
......@@ -32,6 +32,31 @@
#include "copy.h"
int CopyInitCache(copy_cache_t *cache, unsigned width)
{
#ifdef CAN_COMPILE_SSE2
cache->size = __MAX((width + 0x0f) & ~ 0x0f, 4096);
cache->buffer = vlc_memalign(16, cache->size);
if (!cache->buffer)
return VLC_EGENERIC;
#else
(void) cache; (void) width;
#endif
return VLC_SUCCESS;
}
void CopyCleanCache(copy_cache_t *cache)
{
#ifdef CAN_COMPILE_SSE2
vlc_free(cache->buffer);
cache->buffer = NULL;
cache->size = 0;
#else
(void) cache;
#endif
}
#ifdef CAN_COMPILE_SSE2
/* Copy 64 bytes from srcp to dstp loading data with the SSE>=2 instruction
* load and storing data with the SSE>=2 instruction store.
*/
......@@ -57,20 +82,9 @@
# define vlc_CPU_SSSE3() ((cpu & VLC_CPU_SSSE3) != 0)
#endif
/* Execute the instruction op only if SSE2 is supported. */
#ifdef CAN_COMPILE_SSE2
# ifdef __SSE2__
# define ASM_SSE2(cpu, op) asm volatile (op)
# else
# define ASM_SSE2(cpu, op) do { \
if (cpu & VLC_CPU_SSE2) \
asm volatile (op); \
} while (0)
# undef vlc_CPU_SSE2
# define vlc_CPU_SSE2() ((cpu & VLC_CPU_SSE2) != 0)
# endif
#else
# define ASM_SSE2(cpu, op)
#ifndef __SSE2__
# undef vlc_CPU_SSE2
# define vlc_CPU_SSE2() ((cpu & VLC_CPU_SSE2) != 0)
#endif
/* Optimized copy from "Uncacheable Speculative Write Combining" memory
......@@ -84,7 +98,8 @@ static void CopyFromUswc(uint8_t *dst, size_t dst_pitch,
{
assert(((intptr_t)dst & 0x0f) == 0 && (dst_pitch & 0x0f) == 0);
ASM_SSE2(cpu, "mfence");
asm volatile ("mfence");
for (unsigned y = 0; y < height; y++) {
const unsigned unaligned = (-(uintptr_t)src) & 0x0f;
unsigned x = 0;
......@@ -103,8 +118,7 @@ static void CopyFromUswc(uint8_t *dst, size_t dst_pitch,
}
} else
#endif
#ifdef CAN_COMPILE_SSE2
if (vlc_CPU_SSE2()) {
{
if (!unaligned) {
for (; x+63 < width; x += 64)
COPY64(&dst[x], &src[x], "movdqa", "movdqa");
......@@ -113,7 +127,6 @@ static void CopyFromUswc(uint8_t *dst, size_t dst_pitch,
COPY64(&dst[x], &src[x], "movdqa", "movdqu");
}
}
#endif
for (; x < width; x++)
dst[x] = src[x];
......@@ -125,29 +138,23 @@ static void CopyFromUswc(uint8_t *dst, size_t dst_pitch,
static void Copy2d(uint8_t *dst, size_t dst_pitch,
const uint8_t *src, size_t src_pitch,
unsigned width, unsigned height,
unsigned cpu)
unsigned width, unsigned height)
{
assert(((intptr_t)src & 0x0f) == 0 && (src_pitch & 0x0f) == 0);
ASM_SSE2(cpu, "mfence");
asm volatile ("mfence");
for (unsigned y = 0; y < height; y++) {
unsigned x = 0;
#ifdef CAN_COMPILE_SSE2
bool unaligned = ((intptr_t)dst & 0x0f) != 0;
if (vlc_CPU_SSE2()) {
if (!unaligned) {
for (; x+63 < width; x += 64)
COPY64(&dst[x], &src[x], "movdqa", "movntdq");
} else {
for (; x+63 < width; x += 64)
COPY64(&dst[x], &src[x], "movdqa", "movdqu");
}
if (!unaligned) {
for (; x+63 < width; x += 64)
COPY64(&dst[x], &src[x], "movdqa", "movntdq");
} else {
for (; x+63 < width; x += 64)
COPY64(&dst[x], &src[x], "movdqa", "movdqu");
}
#endif
for (; x < width; x++)
dst[x] = src[x];
......@@ -157,10 +164,10 @@ static void Copy2d(uint8_t *dst, size_t dst_pitch,
}
}
static void SplitUV(uint8_t *dstu, size_t dstu_pitch,
uint8_t *dstv, size_t dstv_pitch,
const uint8_t *src, size_t src_pitch,
unsigned width, unsigned height, unsigned cpu)
static void SSE_SplitUV(uint8_t *dstu, size_t dstu_pitch,
uint8_t *dstv, size_t dstv_pitch,
const uint8_t *src, size_t src_pitch,
unsigned width, unsigned height, unsigned cpu)
{
const uint8_t shuffle[] = { 0, 2, 4, 6, 8, 10, 12, 14,
1, 3, 5, 7, 9, 11, 13, 15 };
......@@ -169,7 +176,7 @@ static void SplitUV(uint8_t *dstu, size_t dstu_pitch,
assert(((intptr_t)src & 0x0f) == 0 && (src_pitch & 0x0f) == 0);
ASM_SSE2(cpu, "mfence");
asm volatile ("mfence");
for (unsigned y = 0; y < height; y++) {
unsigned x = 0;
......@@ -206,8 +213,7 @@ static void SplitUV(uint8_t *dstu, size_t dstu_pitch,
}
} else
#endif
#ifdef CAN_COMPILE_SSE2
if (vlc_CPU_SSE2()) {
{
for (x = 0; x < (width & ~31); x += 32) {
asm volatile (
"movdqu (%[mask]), %%xmm7\n"
......@@ -231,7 +237,6 @@ static void SplitUV(uint8_t *dstu, size_t dstu_pitch,
: : [dst2]"r"(&dstu[x]), [dst1]"r"(&dstv[x]), [src]"r"(&src[2*x]), [mask]"r"(mask) : "memory");
}
}
#endif
#undef STORE2X32
#undef LOAD64
......@@ -245,10 +250,10 @@ static void SplitUV(uint8_t *dstu, size_t dstu_pitch,
}
}
static void CopyPlane(uint8_t *dst, size_t dst_pitch, const uint8_t *src, size_t src_pitch,
uint8_t *cache, size_t cache_size,
unsigned width, unsigned height,
unsigned cpu)
static void SSE_CopyPlane(uint8_t *dst, size_t dst_pitch,
const uint8_t *src, size_t src_pitch,
uint8_t *cache, size_t cache_size,
unsigned width, unsigned height, unsigned cpu)
{
const unsigned w16 = (width+15) & ~15;
const unsigned hstep = cache_size / w16;
......@@ -265,21 +270,20 @@ static void CopyPlane(uint8_t *dst, size_t dst_pitch, const uint8_t *src, size_t
/* Copy from our cache to the destination */
Copy2d(dst, dst_pitch,
cache, w16,
width, hblock, cpu);
width, hblock);
/* */
src += src_pitch * hblock;
dst += dst_pitch * hblock;
}
ASM_SSE2(cpu, "mfence");
asm volatile ("mfence");
}
static void SplitPlanes(uint8_t *dstu, size_t dstu_pitch,
uint8_t *dstv, size_t dstv_pitch,
const uint8_t *src, size_t src_pitch,
uint8_t *cache, size_t cache_size,
unsigned width, unsigned height,
unsigned cpu)
static void SSE_SplitPlanes(uint8_t *dstu, size_t dstu_pitch,
uint8_t *dstv, size_t dstv_pitch,
const uint8_t *src, size_t src_pitch,
uint8_t *cache, size_t cache_size,
unsigned width, unsigned height, unsigned cpu)
{
const unsigned w2_16 = (2*width+15) & ~15;
const unsigned hstep = cache_size / w2_16;
......@@ -289,76 +293,125 @@ static void SplitPlanes(uint8_t *dstu, size_t dstu_pitch,
const unsigned hblock = __MIN(hstep, height - y);
/* Copy a bunch of line into our cache */
CopyFromUswc(cache, w2_16,
src, src_pitch,
CopyFromUswc(cache, w2_16, src, src_pitch,
2*width, hblock, cpu);
/* Copy from our cache to the destination */
SplitUV(dstu, dstu_pitch,
dstv, dstv_pitch,
cache, w2_16,
width, hblock, cpu);
SSE_SplitUV(dstu, dstu_pitch, dstv, dstv_pitch,
cache, w2_16, width, hblock, cpu);
/* */
src += src_pitch * hblock;
dstu += dstu_pitch * hblock;
dstv += dstv_pitch * hblock;
}
asm volatile ("mfence");
}
static void SSE_CopyFromNv12(picture_t *dst,
uint8_t *src[2], size_t src_pitch[2],
unsigned width, unsigned height,
copy_cache_t *cache)
{
const unsigned cpu = vlc_CPU();
/* */
SSE_CopyPlane(dst->p[0].p_pixels, dst->p[0].i_pitch,
src[0], src_pitch[0],
cache->buffer, cache->size,
width, height, cpu);
SSE_SplitPlanes(dst->p[2].p_pixels, dst->p[2].i_pitch,
dst->p[1].p_pixels, dst->p[1].i_pitch,
src[1], src_pitch[1],
cache->buffer, cache->size,
width/2, height/2, cpu);
asm volatile ("emms");
}
ASM_SSE2(cpu, "mfence");
static void SSE_CopyFromYv12(picture_t *dst,
uint8_t *src[3], size_t src_pitch[3],
unsigned width, unsigned height,
copy_cache_t *cache)
{
const unsigned cpu = vlc_CPU();
/* */
for (unsigned n = 0; n < 3; n++) {
const unsigned d = n > 0 ? 2 : 1;
SSE_CopyPlane(dst->p[n].p_pixels, dst->p[n].i_pitch,
src[n], src_pitch[n],
cache->buffer, cache->size,
width/d, height/d, cpu);
}
asm volatile ("emms");
}
#undef COPY64
#endif /* CAN_COMPILE_SSE2 */
int CopyInitCache(copy_cache_t *cache, unsigned width)
static void CopyPlane(uint8_t *dst, size_t dst_pitch,
const uint8_t *src, size_t src_pitch,
unsigned width, unsigned height)
{
cache->size = __MAX((width + 0x0f) & ~ 0x0f, 4096);
cache->buffer = vlc_memalign(16, cache->size);
if (!cache->buffer)
return VLC_EGENERIC;
return VLC_SUCCESS;
for (unsigned y = 0; y < height; y++) {
memcpy(dst, src, width);
src += src_pitch;
dst += dst_pitch;
}
}
void CopyCleanCache(copy_cache_t *cache)
static void SplitPlanes(uint8_t *dstu, size_t dstu_pitch,
uint8_t *dstv, size_t dstv_pitch,
const uint8_t *src, size_t src_pitch,
unsigned width, unsigned height)
{
vlc_free(cache->buffer);
cache->buffer = NULL;
cache->size = 0;
for (unsigned y = 0; y < height; y++) {
for (unsigned x = 0; x < width; x++) {
dstu[x] = src[2*x+0];
dstv[x] = src[2*x+1];
}
src += src_pitch;
dstu += dstu_pitch;
dstv += dstv_pitch;
}
}
void CopyFromNv12(picture_t *dst, uint8_t *src[2], size_t src_pitch[2],
unsigned width, unsigned height,
copy_cache_t *cache)
{
const unsigned cpu = vlc_CPU();
#ifdef CAN_COMPILE_SSE2
unsigned cpu = vlc_CPU();
if (vlc_CPU_SSE2())
return SSE_CopyFromNv12(dst, src, src_pitch, width, height, cache);
#else
(void) cache;
#endif
/* */
CopyPlane(dst->p[0].p_pixels, dst->p[0].i_pitch,
src[0], src_pitch[0],
cache->buffer, cache->size,
width, height, cpu);
width, height);
SplitPlanes(dst->p[2].p_pixels, dst->p[2].i_pitch,
dst->p[1].p_pixels, dst->p[1].i_pitch,
src[1], src_pitch[1],
cache->buffer, cache->size,
width/2, height/2, cpu);
ASM_SSE2(cpu, "emms");
width/2, height/2);
}
void CopyFromYv12(picture_t *dst, uint8_t *src[3], size_t src_pitch[3],
unsigned width, unsigned height,
copy_cache_t *cache)
{
const unsigned cpu = vlc_CPU();
#ifdef CAN_COMPILE_SSE2
unsigned cpu = vlc_CPU();
if (vlc_CPU_SSE2())
return SSE_CopyFromYv12(dst, src, src_pitch, width, height, cache);
#else
(void) cache;
#endif
/* */
for (unsigned n = 0; n < 3; n++) {
const unsigned d = n > 0 ? 2 : 1;
CopyPlane(dst->p[n].p_pixels, dst->p[n].i_pitch,
src[n], src_pitch[n],
cache->buffer, cache->size,
width/d, height/d, cpu);
}
ASM_SSE2(cpu, "emms");
CopyPlane(dst->p[0].p_pixels, dst->p[0].i_pitch,
src[0], src_pitch[0], width, height);
CopyPlane(dst->p[1].p_pixels, dst->p[1].i_pitch,
src[1], src_pitch[1], width / 2, height / 2);
CopyPlane(dst->p[2].p_pixels, dst->p[2].i_pitch,
src[1], src_pitch[2], width / 2, height / 2);
}
#undef ASM_SSE2
#undef COPY64
modules/codec/avcodec/copy.h
View file @ 07d8e576
......@@ -25,8 +25,10 @@
#define _VLC_AVCODEC_COPY_H 1
typedef struct {
# ifdef CAN_COMPILE_SSE2
uint8_t *buffer;
size_t size;
# endif
} copy_cache_t;
int CopyInitCache(copy_cache_t *cache, unsigned width);
......
modules/codec/avcodec/vaapi.c
View file @ 07d8e576
......@@ -322,7 +322,8 @@ static int CreateSurfaces( vlc_va_sys_t *p_va, void **pp_hw_ctx, vlc_fourcc_t *p
goto error;
*pi_chroma = i_chroma;
CopyInitCache( &p_va->image_cache, i_width );
if( unlikely(CopyInitCache( &p_va->image_cache, i_width )) )
goto error;
/* Setup the ffmpeg hardware context */
*pp_hw_ctx = &p_va->hw_ctx;
......@@ -370,9 +371,6 @@ static int Extract( vlc_va_t *p_external, picture_t *p_picture, AVFrame *p_ff )
{
vlc_va_sys_t *p_va = p_external->sys;
if( !p_va->image_cache.buffer )
return VLC_EGENERIC;
VASurfaceID i_surface_id = (VASurfaceID)(uintptr_t)p_ff->data[3];
#if VA_CHECK_VERSION(0,31,0)
......
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