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Make libsharpyuv self-contained by removing dependency on cpu.c

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Change-Id: I2edac1afa38bfddf2a91e7829e38425bd3519feb
This commit is contained in:
Maryla
2022-03-30 11:37:32 +02:00
parent 7a68afaac5
commit 841960b670
5 changed files with 50 additions and 11 deletions
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28
sharpyuv/sharpyuv.c
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@ -62,9 +62,8 @@ static uint32_t kLinearToGammaTabS[kGammaTabSize + 2];
#define GAMMA_TO_LINEAR_BITS 14
static uint32_t kGammaToLinearTabS[MAX_Y_T + 1]; // size scales with Y_FIX
static volatile int kGammaTablesSOk = 0;
static void InitGammaTablesS(void);
WEBP_DSP_INIT_FUNC(InitGammaTablesS) {
static void InitGammaTablesS(void) {
assert(2 * GAMMA_TO_LINEAR_BITS < 32); // we use uint32_t intermediate values
if (!kGammaTablesSOk) {
int v;
@ -180,6 +179,7 @@ static void UpdateChroma(const fixed_y_t* src1, const fixed_y_t* src2,
static void StoreGray(const fixed_y_t* rgb, fixed_y_t* y, int w) {
int i;
assert(w > 0);
for (i = 0; i < w; ++i) {
y[i] = RGBToGray(rgb[0 * w + i], rgb[1 * w + i], rgb[2 * w + i]);
}
@ -348,9 +348,6 @@ static int DoSharpArgbToYuv(const uint8_t* r_ptr, const uint8_t* g_ptr,
goto End;
}
InitGammaTablesS();
InitSharpYuv();
// Import RGB samples to W/RGB representation.
for (j = 0; j < height; j += 2) {
const int is_last_row = (j == height - 1);
@ -438,6 +435,26 @@ static int DoSharpArgbToYuv(const uint8_t* r_ptr, const uint8_t* g_ptr,
}
#undef SAFE_ALLOC
// Hidden exported init function.
// By default SharpYuvConvert calls it with NULL. If needed, users can declare
// it as extern and call it with a VP8CPUInfo function.
extern void SharpYuvInit(VP8CPUInfo cpu_info_func);
void SharpYuvInit(VP8CPUInfo cpu_info_func) {
static volatile VP8CPUInfo sharpyuv_last_cpuinfo_used =
(VP8CPUInfo)&sharpyuv_last_cpuinfo_used;
const int initialized =
(sharpyuv_last_cpuinfo_used != (VP8CPUInfo)&sharpyuv_last_cpuinfo_used);
if (cpu_info_func == NULL && initialized) return;
if (sharpyuv_last_cpuinfo_used == cpu_info_func) return;
SharpYuvInitDsp(cpu_info_func);
if (!initialized) {
InitGammaTablesS();
}
sharpyuv_last_cpuinfo_used = cpu_info_func;
}
// In YUV_FIX fixed point precision.
static const SharpYuvConversionMatrix kWebpYuvMatrix = {
{16839, 33059, 6420, 16 << 16},
@ -459,6 +476,7 @@ int SharpYuvConvert(const uint8_t* r_ptr, const uint8_t* g_ptr,
height < kMinDimensionIterativeConversion) {
return 0;
}
SharpYuvInit(NULL);
return DoSharpArgbToYuv(r_ptr, g_ptr, b_ptr, step, rgb_stride, dst_y,
dst_stride_y, dst_u, dst_stride_u, dst_v,
dst_stride_v, width, height, yuv_matrix);