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st/vdpau: add format conversions for GetBitsYCbCr 

Add simple plain C routines for NV12<->YV12 and YUYV<->UYVY
conversions. The NV12->YV12 conversion is commonly used, for instance
by VLC.

Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Grigori Goronzy 2013-10-13 18:08:45 +02:00 committed by Christian König
parent f250fd59c4
commit e6c2afa9ce
1 changed files with 116 additions and 7 deletions
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123
src/gallium/state_trackers/vdpau/surface.c
View File

@ -38,6 +38,13 @@
#include "vdpau_private.h"
enum getbits_conversion {
CONVERSION_NONE,
CONVERSION_NV12_TO_YV12,
CONVERSION_YV12_TO_NV12,
CONVERSION_SWAP_YUYV_UYVY,
};
/**
* Create a VdpVideoSurface.
*/
@ -185,6 +192,80 @@ vlVdpVideoSurfaceSize(vlVdpSurface *p_surf, int component,
*height /= 2;
}
static void
vlVdpCopyNV12ToYV12(void *const *destination_data,
uint32_t const *destination_pitches,
int src_plane, int src_field,
int src_stride, int num_fields,
uint8_t const *src,
int width, int height)
{
int x, y;
unsigned u_stride = destination_pitches[2] * num_fields;
unsigned v_stride = destination_pitches[1] * num_fields;
uint8_t *u_dst = (uint8_t *)destination_data[2] + destination_pitches[2] * src_field;
uint8_t *v_dst = (uint8_t *)destination_data[1] + destination_pitches[1] * src_field;
/* TODO: SIMD */
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
u_dst[x] = src[2*x];
v_dst[x] = src[2*x+1];
}
u_dst += u_stride;
v_dst += v_stride;
src += src_stride;
}
}
static void
vlVdpCopyYV12ToNV12(void *const *destination_data,
uint32_t const *destination_pitches,
int src_plane, int src_field,
int src_stride, int num_fields,
uint8_t const *src,
int width, int height)
{
int x, y;
unsigned offset = 2 - src_plane;
unsigned stride = destination_pitches[1] * num_fields;
uint8_t *dst = (uint8_t *)destination_data[1] + destination_pitches[1] * src_field;
/* TODO: SIMD */
for (y = 0; y < height; y++) {
for (x = 0; x < 2 * width; x += 2) {
dst[x+offset] = src[x>>1];
}
dst += stride;
src += src_stride;
}
}
static void
vlVdpCopySwap422Packed(void *const *destination_data,
uint32_t const *destination_pitches,
int src_plane, int src_field,
int src_stride, int num_fields,
uint8_t const *src,
int width, int height)
{
int x, y;
unsigned stride = destination_pitches[0] * num_fields;
uint8_t *dst = (uint8_t *)destination_data[0] + destination_pitches[0] * src_field;
/* TODO: SIMD */
for (y = 0; y < height; y++) {
for (x = 0; x < 4 * width; x += 4) {
dst[x+0] = src[x+1];
dst[x+1] = src[x+0];
dst[x+2] = src[x+3];
dst[x+3] = src[x+2];
}
dst += stride;
src += src_stride;
}
}
/**
* Copy image data from a VdpVideoSurface to application memory in a specified
* YCbCr format.
@ -197,8 +278,9 @@ vlVdpVideoSurfaceGetBitsYCbCr(VdpVideoSurface surface,
{
vlVdpSurface *vlsurface;
struct pipe_context *pipe;
enum pipe_format format;
enum pipe_format format, buffer_format;
struct pipe_sampler_view **sampler_views;
enum getbits_conversion conversion = CONVERSION_NONE;
unsigned i, j;
vlsurface = vlGetDataHTAB(surface);
@ -211,10 +293,23 @@ vlVdpVideoSurfaceGetBitsYCbCr(VdpVideoSurface surface,
format = FormatYCBCRToPipe(destination_ycbcr_format);
if (format == PIPE_FORMAT_NONE)
return VDP_STATUS_INVALID_Y_CB_CR_FORMAT;
return VDP_STATUS_INVALID_Y_CB_CR_FORMAT;
if (vlsurface->video_buffer == NULL || format != vlsurface->video_buffer->buffer_format)
return VDP_STATUS_NO_IMPLEMENTATION; /* TODO We don't support conversion (yet) */
if (vlsurface->video_buffer == NULL)
return VDP_STATUS_INVALID_VALUE;
buffer_format = vlsurface->video_buffer->buffer_format;
if (format != buffer_format) {
if (format == PIPE_FORMAT_YV12 && buffer_format == PIPE_FORMAT_NV12)
conversion = CONVERSION_NV12_TO_YV12;
else if (format == PIPE_FORMAT_NV12 && buffer_format == PIPE_FORMAT_YV12)
conversion = CONVERSION_YV12_TO_NV12;
else if ((format == PIPE_FORMAT_YUYV && buffer_format == PIPE_FORMAT_UYVY) ||
(format == PIPE_FORMAT_UYVY && buffer_format == PIPE_FORMAT_YUYV))
conversion = CONVERSION_SWAP_YUYV_UYVY;
else
return VDP_STATUS_NO_IMPLEMENTATION;
}
pipe_mutex_lock(vlsurface->device->mutex);
sampler_views = vlsurface->video_buffer->get_sampler_view_planes(vlsurface->video_buffer);
@ -245,9 +340,23 @@ vlVdpVideoSurfaceGetBitsYCbCr(VdpVideoSurface surface,
return VDP_STATUS_RESOURCES;
}
util_copy_rect(destination_data[i] + destination_pitches[i] * j, sv->texture->format,
destination_pitches[i] * sv->texture->array_size, 0, 0,
box.width, box.height, map, transfer->stride, 0, 0);
if (conversion == CONVERSION_NV12_TO_YV12 && i == 1) {
vlVdpCopyNV12ToYV12(destination_data, destination_pitches,
i, j, transfer->stride, sv->texture->array_size,
map, box.width, box.height);
} else if (conversion == CONVERSION_YV12_TO_NV12 && i > 0) {
vlVdpCopyYV12ToNV12(destination_data, destination_pitches,
i, j, transfer->stride, sv->texture->array_size,
map, box.width, box.height);
} else if (conversion == CONVERSION_SWAP_YUYV_UYVY) {
vlVdpCopySwap422Packed(destination_data, destination_pitches,
i, j, transfer->stride, sv->texture->array_size,
map, box.width, box.height);
} else {
util_copy_rect(destination_data[i] + destination_pitches[i] * j, sv->texture->format,
destination_pitches[i] * sv->texture->array_size, 0, 0,
box.width, box.height, map, transfer->stride, 0, 0);
}
pipe_transfer_unmap(pipe, transfer);
}