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dxva2: use gpu_memcpy with unmatched strides 

Like memcpy_pic, this checks if the strides match first.
This commit is contained in:
James Ross-Gowan 2014-10-27 22:28:20 +11:00 committed by wm4
parent dced2aa81b
commit a95ce07273
1 changed files with 29 additions and 8 deletions
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37
video/decode/dxva2.c
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@ -264,15 +264,36 @@ static void copy_nv12_fallback(struct mp_image *dest, uint8_t *src_bits,
static void copy_nv12_gpu_sse4(struct mp_image *dest, uint8_t *src_bits,
unsigned src_pitch, unsigned surf_height)
{
// Unfortunately the fallback must be used if the stride doesn't match
if (dest->stride[0] != src_pitch) {
copy_nv12_fallback(dest, src_bits, src_pitch, surf_height);
return;
}
const int lines = dest->h;
const int stride_y = dest->stride[0];
const int stride_uv = dest->stride[1];
unsigned size = dest->h * src_pitch;
gpu_memcpy(dest->planes[0], src_bits, size);
gpu_memcpy(dest->planes[1], src_bits + src_pitch * surf_height, size / 2);
// If the strides match, the image can be copied in one go
if (stride_y == src_pitch && stride_uv == src_pitch) {
const size_t size = lines * src_pitch;
gpu_memcpy(dest->planes[0], src_bits, size);
gpu_memcpy(dest->planes[1], src_bits + src_pitch * surf_height, size / 2);
} else {
// Copy the Y plane line-by-line
uint8_t *dest_y = dest->planes[0];
const uint8_t *src_y = src_bits;
const int bytes_per_line = dest->w;
for (int i = 0; i < lines; i++) {
gpu_memcpy(dest_y, src_y, bytes_per_line);
dest_y += stride_y;
src_y += src_pitch;
}
// Copy the UV plane line-by-line
uint8_t *dest_uv = dest->planes[1];
const uint8_t *src_uv = src_bits + src_pitch * surf_height;
for (int i = 0; i < lines / 2; i++) {
gpu_memcpy(dest_uv, src_uv, bytes_per_line);
dest_uv += stride_uv;
src_uv += src_pitch;
}
}
}
static struct mp_image *dxva2_retrieve_image(struct lavc_ctx *s,