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FFmpeg/libavutil/hwcontext_vaapi.c

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/*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avassert.h"
#include "buffer.h"
#include "common.h"
#include "hwcontext.h"
#include "hwcontext_internal.h"
#include "hwcontext_vaapi.h"
#include "mem.h"
#include "pixdesc.h"
#include "pixfmt.h"
typedef struct VAAPISurfaceFormat {
enum AVPixelFormat pix_fmt;
VAImageFormat image_format;
} VAAPISurfaceFormat;
typedef struct VAAPIDeviceContext {
// Surface formats which can be used with this device.
VAAPISurfaceFormat *formats;
int nb_formats;
} VAAPIDeviceContext;
typedef struct VAAPIFramesContext {
// Surface attributes set at create time.
VASurfaceAttrib *attributes;
int nb_attributes;
// RT format of the underlying surface (Intel driver ignores this anyway).
unsigned int rt_format;
// Whether vaDeriveImage works.
int derive_works;
} VAAPIFramesContext;
enum {
VAAPI_MAP_READ = 0x01,
VAAPI_MAP_WRITE = 0x02,
VAAPI_MAP_DIRECT = 0x04,
};
typedef struct VAAPISurfaceMap {
// The source hardware frame of this mapping (with hw_frames_ctx set).
const AVFrame *source;
// VAAPI_MAP_* flags which apply to this mapping.
int flags;
// Handle to the derived or copied image which is mapped.
VAImage image;
} VAAPISurfaceMap;
#define MAP(va, rt, av) { \
VA_FOURCC_ ## va, \
VA_RT_FORMAT_ ## rt, \
AV_PIX_FMT_ ## av \
}
// The map fourcc <-> pix_fmt isn't bijective because of the annoying U/V
// plane swap cases. The frame handling below tries to hide these.
static struct {
unsigned int fourcc;
unsigned int rt_format;
enum AVPixelFormat pix_fmt;
} vaapi_format_map[] = {
MAP(NV12, YUV420, NV12),
MAP(YV12, YUV420, YUV420P), // With U/V planes swapped.
MAP(IYUV, YUV420, YUV420P),
//MAP(I420, YUV420, YUV420P), // Not in libva but used by Intel driver.
#ifdef VA_FOURCC_YV16
MAP(YV16, YUV422, YUV422P), // With U/V planes swapped.
#endif
MAP(422H, YUV422, YUV422P),
MAP(UYVY, YUV422, UYVY422),
MAP(YUY2, YUV422, YUYV422),
MAP(Y800, YUV400, GRAY8),
#ifdef VA_FOURCC_P010
//MAP(P010, YUV420_10BPP, P010),
#endif
MAP(BGRA, RGB32, BGRA),
//MAP(BGRX, RGB32, BGR0),
MAP(RGBA, RGB32, RGBA),
//MAP(RGBX, RGB32, RGB0),
MAP(ABGR, RGB32, ABGR),
//MAP(XBGR, RGB32, 0BGR),
MAP(ARGB, RGB32, ARGB),
//MAP(XRGB, RGB32, 0RGB),
};
#undef MAP
static enum AVPixelFormat vaapi_pix_fmt_from_fourcc(unsigned int fourcc)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(vaapi_format_map); i++)
if (vaapi_format_map[i].fourcc == fourcc)
return vaapi_format_map[i].pix_fmt;
return AV_PIX_FMT_NONE;
}
static int vaapi_get_image_format(AVHWDeviceContext *hwdev,
enum AVPixelFormat pix_fmt,
VAImageFormat **image_format)
{
VAAPIDeviceContext *ctx = hwdev->internal->priv;
int i;
for (i = 0; i < ctx->nb_formats; i++) {
if (ctx->formats[i].pix_fmt == pix_fmt) {
*image_format = &ctx->formats[i].image_format;
return 0;
}
}
return AVERROR(EINVAL);
}
static int vaapi_frames_get_constraints(AVHWDeviceContext *hwdev,
const void *hwconfig,
AVHWFramesConstraints *constraints)
{
AVVAAPIDeviceContext *hwctx = hwdev->hwctx;
const AVVAAPIHWConfig *config = hwconfig;
AVVAAPIHWConfig *tmp_config;
VASurfaceAttrib *attr_list = NULL;
VAStatus vas;
enum AVPixelFormat pix_fmt;
unsigned int fourcc;
int err, i, j, attr_count, pix_fmt_count;
if (!hwconfig) {
// No configuration was provided, so we create a temporary pipeline
// configuration in order to query all supported image formats.
tmp_config = av_mallocz(sizeof(*config));
if (!tmp_config)
return AVERROR(ENOMEM);
vas = vaCreateConfig(hwctx->display,
VAProfileNone, VAEntrypointVideoProc,
NULL, 0, &tmp_config->config_id);
if (vas != VA_STATUS_SUCCESS) {
// No vpp. We might still be able to do something useful if
// codecs are supported, so try to make the most-commonly
// supported decoder configuration we can to query instead.
vas = vaCreateConfig(hwctx->display,
VAProfileH264ConstrainedBaseline,
VAEntrypointVLD, NULL, 0,
&tmp_config->config_id);
if (vas != VA_STATUS_SUCCESS) {
av_freep(&tmp_config);
return AVERROR(ENOSYS);
}
}
config = tmp_config;
}
attr_count = 0;
vas = vaQuerySurfaceAttributes(hwctx->display, config->config_id,
0, &attr_count);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwdev, AV_LOG_ERROR, "Failed to query surface attributes: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(ENOSYS);
goto fail;
}
attr_list = av_malloc(attr_count * sizeof(*attr_list));
if (!attr_list) {
err = AVERROR(ENOMEM);
goto fail;
}
vas = vaQuerySurfaceAttributes(hwctx->display, config->config_id,
attr_list, &attr_count);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwdev, AV_LOG_ERROR, "Failed to query surface attributes: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(ENOSYS);
goto fail;
}
pix_fmt_count = 0;
for (i = 0; i < attr_count; i++) {
switch (attr_list[i].type) {
case VASurfaceAttribPixelFormat:
fourcc = attr_list[i].value.value.i;
pix_fmt = vaapi_pix_fmt_from_fourcc(fourcc);
if (pix_fmt != AV_PIX_FMT_NONE) {
++pix_fmt_count;
} else {
// Something unsupported - ignore.
}
break;
case VASurfaceAttribMinWidth:
constraints->min_width = attr_list[i].value.value.i;
break;
case VASurfaceAttribMinHeight:
constraints->min_height = attr_list[i].value.value.i;
break;
case VASurfaceAttribMaxWidth:
constraints->max_width = attr_list[i].value.value.i;
break;
case VASurfaceAttribMaxHeight:
constraints->max_height = attr_list[i].value.value.i;
break;
}
}
if (pix_fmt_count == 0) {
// Nothing usable found. Presumably there exists something which
// works, so leave the set null to indicate unknown.
constraints->valid_sw_formats = NULL;
} else {
constraints->valid_sw_formats = av_malloc_array(pix_fmt_count + 1,
sizeof(pix_fmt));
if (!constraints->valid_sw_formats) {
err = AVERROR(ENOMEM);
goto fail;
}
for (i = j = 0; i < attr_count; i++) {
if (attr_list[i].type != VASurfaceAttribPixelFormat)
continue;
fourcc = attr_list[i].value.value.i;
pix_fmt = vaapi_pix_fmt_from_fourcc(fourcc);
if (pix_fmt != AV_PIX_FMT_NONE)
constraints->valid_sw_formats[j++] = pix_fmt;
}
av_assert0(j == pix_fmt_count);
constraints->valid_sw_formats[j] = AV_PIX_FMT_NONE;
}
constraints->valid_hw_formats = av_malloc_array(2, sizeof(pix_fmt));
if (!constraints->valid_hw_formats) {
err = AVERROR(ENOMEM);
goto fail;
}
constraints->valid_hw_formats[0] = AV_PIX_FMT_VAAPI;
constraints->valid_hw_formats[1] = AV_PIX_FMT_NONE;
err = 0;
fail:
av_freep(&attr_list);
if (!hwconfig) {
vaDestroyConfig(hwctx->display, tmp_config->config_id);
av_freep(&tmp_config);
}
return err;
}
static int vaapi_device_init(AVHWDeviceContext *hwdev)
{
VAAPIDeviceContext *ctx = hwdev->internal->priv;
AVVAAPIDeviceContext *hwctx = hwdev->hwctx;
AVHWFramesConstraints *constraints = NULL;
VAImageFormat *image_list = NULL;
VAStatus vas;
int err, i, j, image_count;
enum AVPixelFormat pix_fmt;
unsigned int fourcc;
constraints = av_mallocz(sizeof(*constraints));
if (!constraints)
goto fail;
err = vaapi_frames_get_constraints(hwdev, NULL, constraints);
if (err < 0)
goto fail;
image_count = vaMaxNumImageFormats(hwctx->display);
if (image_count <= 0) {
err = AVERROR(EIO);
goto fail;
}
image_list = av_malloc(image_count * sizeof(*image_list));
if (!image_list) {
err = AVERROR(ENOMEM);
goto fail;
}
vas = vaQueryImageFormats(hwctx->display, image_list, &image_count);
if (vas != VA_STATUS_SUCCESS) {
err = AVERROR(EIO);
goto fail;
}
ctx->formats = av_malloc(image_count * sizeof(*ctx->formats));
if (!ctx->formats) {
err = AVERROR(ENOMEM);
goto fail;
}
ctx->nb_formats = 0;
for (i = 0; i < image_count; i++) {
fourcc = image_list[i].fourcc;
pix_fmt = vaapi_pix_fmt_from_fourcc(fourcc);
for (j = 0; constraints->valid_sw_formats[j] != AV_PIX_FMT_NONE; j++) {
if (pix_fmt == constraints->valid_sw_formats[j])
break;
}
if (constraints->valid_sw_formats[j] != AV_PIX_FMT_NONE) {
av_log(hwdev, AV_LOG_DEBUG, "Format %#x -> %s.\n",
fourcc, av_get_pix_fmt_name(pix_fmt));
ctx->formats[ctx->nb_formats].pix_fmt = pix_fmt;
ctx->formats[ctx->nb_formats].image_format = image_list[i];
++ctx->nb_formats;
} else {
av_log(hwdev, AV_LOG_DEBUG, "Format %#x -> unknown.\n", fourcc);
}
}
av_free(image_list);
av_hwframe_constraints_free(&constraints);
return 0;
fail:
av_freep(&ctx->formats);
av_free(image_list);
av_hwframe_constraints_free(&constraints);
return err;
}
static void vaapi_device_uninit(AVHWDeviceContext *hwdev)
{
VAAPIDeviceContext *ctx = hwdev->internal->priv;
av_freep(&ctx->formats);
}
static void vaapi_buffer_free(void *opaque, uint8_t *data)
{
AVHWFramesContext *hwfc = opaque;
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
VASurfaceID surface_id;
VAStatus vas;
surface_id = (VASurfaceID)(uintptr_t)data;
vas = vaDestroySurfaces(hwctx->display, &surface_id, 1);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to destroy surface %#x: "
"%d (%s).\n", surface_id, vas, vaErrorStr(vas));
}
}
static AVBufferRef *vaapi_pool_alloc(void *opaque, int size)
{
AVHWFramesContext *hwfc = opaque;
VAAPIFramesContext *ctx = hwfc->internal->priv;
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
AVVAAPIFramesContext *avfc = hwfc->hwctx;
VASurfaceID surface_id;
VAStatus vas;
AVBufferRef *ref;
vas = vaCreateSurfaces(hwctx->display, ctx->rt_format,
hwfc->width, hwfc->height,
&surface_id, 1,
ctx->attributes, ctx->nb_attributes);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to create surface: "
"%d (%s).\n", vas, vaErrorStr(vas));
return NULL;
}
av_log(hwfc, AV_LOG_DEBUG, "Created surface %#x.\n", surface_id);
ref = av_buffer_create((uint8_t*)(uintptr_t)surface_id,
sizeof(surface_id), &vaapi_buffer_free,
hwfc, AV_BUFFER_FLAG_READONLY);
if (!ref) {
vaDestroySurfaces(hwctx->display, &surface_id, 1);
return NULL;
}
if (hwfc->initial_pool_size > 0) {
// This is a fixed-size pool, so we must still be in the initial
// allocation sequence.
av_assert0(avfc->nb_surfaces < hwfc->initial_pool_size);
avfc->surface_ids[avfc->nb_surfaces] = surface_id;
++avfc->nb_surfaces;
}
return ref;
}
static int vaapi_frames_init(AVHWFramesContext *hwfc)
{
AVVAAPIFramesContext *avfc = hwfc->hwctx;
VAAPIFramesContext *ctx = hwfc->internal->priv;
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
VAImageFormat *expected_format;
AVBufferRef *test_surface = NULL;
VASurfaceID test_surface_id;
VAImage test_image;
VAStatus vas;
int err, i;
unsigned int fourcc, rt_format;
for (i = 0; i < FF_ARRAY_ELEMS(vaapi_format_map); i++) {
if (vaapi_format_map[i].pix_fmt == hwfc->sw_format) {
fourcc = vaapi_format_map[i].fourcc;
rt_format = vaapi_format_map[i].rt_format;
break;
}
}
if (i >= FF_ARRAY_ELEMS(vaapi_format_map)) {
av_log(hwfc, AV_LOG_ERROR, "Unsupported format: %s.\n",
av_get_pix_fmt_name(hwfc->sw_format));
return AVERROR(EINVAL);
}
if (!hwfc->pool) {
int need_memory_type = 1, need_pixel_format = 1;
for (i = 0; i < avfc->nb_attributes; i++) {
if (ctx->attributes[i].type == VASurfaceAttribMemoryType)
need_memory_type = 0;
if (ctx->attributes[i].type == VASurfaceAttribPixelFormat)
need_pixel_format = 0;
}
ctx->nb_attributes =
avfc->nb_attributes + need_memory_type + need_pixel_format;
ctx->attributes = av_malloc(ctx->nb_attributes *
sizeof(*ctx->attributes));
if (!ctx->attributes) {
err = AVERROR(ENOMEM);
goto fail;
}
for (i = 0; i < avfc->nb_attributes; i++)
ctx->attributes[i] = avfc->attributes[i];
if (need_memory_type) {
ctx->attributes[i++] = (VASurfaceAttrib) {
.type = VASurfaceAttribMemoryType,
.flags = VA_SURFACE_ATTRIB_SETTABLE,
.value.type = VAGenericValueTypeInteger,
.value.value.i = VA_SURFACE_ATTRIB_MEM_TYPE_VA,
};
}
if (need_pixel_format) {
ctx->attributes[i++] = (VASurfaceAttrib) {
.type = VASurfaceAttribPixelFormat,
.flags = VA_SURFACE_ATTRIB_SETTABLE,
.value.type = VAGenericValueTypeInteger,
.value.value.i = fourcc,
};
}
av_assert0(i == ctx->nb_attributes);
ctx->rt_format = rt_format;
if (hwfc->initial_pool_size > 0) {
// This pool will be usable as a render target, so we need to store
// all of the surface IDs somewhere that vaCreateContext() calls
// will be able to access them.
avfc->nb_surfaces = 0;
avfc->surface_ids = av_malloc(hwfc->initial_pool_size *
sizeof(*avfc->surface_ids));
if (!avfc->surface_ids) {
err = AVERROR(ENOMEM);
goto fail;
}
} else {
// This pool allows dynamic sizing, and will not be usable as a
// render target.
avfc->nb_surfaces = 0;
avfc->surface_ids = NULL;
}
hwfc->internal->pool_internal =
av_buffer_pool_init2(sizeof(VASurfaceID), hwfc,
&vaapi_pool_alloc, NULL);
if (!hwfc->internal->pool_internal) {
av_log(hwfc, AV_LOG_ERROR, "Failed to create VAAPI surface pool.\n");
err = AVERROR(ENOMEM);
goto fail;
}
}
// Allocate a single surface to test whether vaDeriveImage() is going
// to work for the specific configuration.
if (hwfc->pool) {
test_surface = av_buffer_pool_get(hwfc->pool);
if (!test_surface) {
av_log(hwfc, AV_LOG_ERROR, "Unable to allocate a surface from "
"user-configured buffer pool.\n");
err = AVERROR(ENOMEM);
goto fail;
}
} else {
test_surface = av_buffer_pool_get(hwfc->internal->pool_internal);
if (!test_surface) {
av_log(hwfc, AV_LOG_ERROR, "Unable to allocate a surface from "
"internal buffer pool.\n");
err = AVERROR(ENOMEM);
goto fail;
}
}
test_surface_id = (VASurfaceID)(uintptr_t)test_surface->data;
ctx->derive_works = 0;
err = vaapi_get_image_format(hwfc->device_ctx,
hwfc->sw_format, &expected_format);
if (err == 0) {
vas = vaDeriveImage(hwctx->display, test_surface_id, &test_image);
if (vas == VA_STATUS_SUCCESS) {
if (expected_format->fourcc == test_image.format.fourcc) {
av_log(hwfc, AV_LOG_DEBUG, "Direct mapping possible.\n");
ctx->derive_works = 1;
} else {
av_log(hwfc, AV_LOG_DEBUG, "Direct mapping disabled: "
"derived image format %08x does not match "
"expected format %08x.\n",
expected_format->fourcc, test_image.format.fourcc);
}
vaDestroyImage(hwctx->display, test_image.image_id);
} else {
av_log(hwfc, AV_LOG_DEBUG, "Direct mapping disabled: "
"deriving image does not work: "
"%d (%s).\n", vas, vaErrorStr(vas));
}
} else {
av_log(hwfc, AV_LOG_DEBUG, "Direct mapping disabled: "
"image format is not supported.\n");
}
av_buffer_unref(&test_surface);
return 0;
fail:
av_buffer_unref(&test_surface);
av_freep(&avfc->surface_ids);
av_freep(&ctx->attributes);
return err;
}
static void vaapi_frames_uninit(AVHWFramesContext *hwfc)
{
AVVAAPIFramesContext *avfc = hwfc->hwctx;
VAAPIFramesContext *ctx = hwfc->internal->priv;
av_freep(&avfc->surface_ids);
av_freep(&ctx->attributes);
}
static int vaapi_get_buffer(AVHWFramesContext *hwfc, AVFrame *frame)
{
frame->buf[0] = av_buffer_pool_get(hwfc->pool);
if (!frame->buf[0])
return AVERROR(ENOMEM);
frame->data[3] = frame->buf[0]->data;
frame->format = AV_PIX_FMT_VAAPI;
frame->width = hwfc->width;
frame->height = hwfc->height;
return 0;
}
static int vaapi_transfer_get_formats(AVHWFramesContext *hwfc,
enum AVHWFrameTransferDirection dir,
enum AVPixelFormat **formats)
{
VAAPIDeviceContext *ctx = hwfc->device_ctx->internal->priv;
enum AVPixelFormat *pix_fmts, preferred_format;
int i, k;
preferred_format = hwfc->sw_format;
pix_fmts = av_malloc((ctx->nb_formats + 1) * sizeof(*pix_fmts));
if (!pix_fmts)
return AVERROR(ENOMEM);
pix_fmts[0] = preferred_format;
k = 1;
for (i = 0; i < ctx->nb_formats; i++) {
if (ctx->formats[i].pix_fmt == preferred_format)
continue;
av_assert0(k < ctx->nb_formats);
pix_fmts[k++] = ctx->formats[i].pix_fmt;
}
av_assert0(k == ctx->nb_formats);
pix_fmts[k] = AV_PIX_FMT_NONE;
*formats = pix_fmts;
return 0;
}
static void vaapi_unmap_frame(void *opaque, uint8_t *data)
{
AVHWFramesContext *hwfc = opaque;
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
VAAPISurfaceMap *map = (VAAPISurfaceMap*)data;
const AVFrame *src;
VASurfaceID surface_id;
VAStatus vas;
src = map->source;
surface_id = (VASurfaceID)(uintptr_t)src->data[3];
av_log(hwfc, AV_LOG_DEBUG, "Unmap surface %#x.\n", surface_id);
vas = vaUnmapBuffer(hwctx->display, map->image.buf);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to unmap image from surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
}
if ((map->flags & VAAPI_MAP_WRITE) &&
!(map->flags & VAAPI_MAP_DIRECT)) {
vas = vaPutImage(hwctx->display, surface_id, map->image.image_id,
0, 0, hwfc->width, hwfc->height,
0, 0, hwfc->width, hwfc->height);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to write image to surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
}
}
vas = vaDestroyImage(hwctx->display, map->image.image_id);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to destroy image from surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
}
av_free(map);
}
static int vaapi_map_frame(AVHWFramesContext *hwfc,
AVFrame *dst, const AVFrame *src, int flags)
{
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
VAAPIFramesContext *ctx = hwfc->internal->priv;
VASurfaceID surface_id;
VAImageFormat *image_format;
VAAPISurfaceMap *map;
VAStatus vas;
void *address = NULL;
int err, i;
surface_id = (VASurfaceID)(uintptr_t)src->data[3];
av_log(hwfc, AV_LOG_DEBUG, "Map surface %#x.\n", surface_id);
if (!ctx->derive_works && (flags & VAAPI_MAP_DIRECT)) {
// Requested direct mapping but it is not possible.
return AVERROR(EINVAL);
}
if (dst->format == AV_PIX_FMT_NONE)
dst->format = hwfc->sw_format;
if (dst->format != hwfc->sw_format && (flags & VAAPI_MAP_DIRECT)) {
// Requested direct mapping but the formats do not match.
return AVERROR(EINVAL);
}
err = vaapi_get_image_format(hwfc->device_ctx, dst->format, &image_format);
if (err < 0) {
// Requested format is not a valid output format.
return AVERROR(EINVAL);
}
map = av_malloc(sizeof(VAAPISurfaceMap));
if (!map)
return AVERROR(ENOMEM);
map->source = src;
map->flags = flags;
map->image.image_id = VA_INVALID_ID;
vas = vaSyncSurface(hwctx->display, surface_id);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to sync surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
// The memory which we map using derive need not be connected to the CPU
// in a way conducive to fast access. On Gen7-Gen9 Intel graphics, the
// memory is mappable but not cached, so normal memcpy()-like access is
// very slow to read it (but writing is ok). It is possible to read much
// faster with a copy routine which is aware of the limitation, but we
// assume for now that the user is not aware of that and would therefore
// prefer not to be given direct-mapped memory if they request read access.
if (ctx->derive_works &&
((flags & VAAPI_MAP_DIRECT) || !(flags & VAAPI_MAP_READ))) {
vas = vaDeriveImage(hwctx->display, surface_id, &map->image);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to derive image from "
"surface %#x: %d (%s).\n",
surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
if (map->image.format.fourcc != image_format->fourcc) {
av_log(hwfc, AV_LOG_ERROR, "Derive image of surface %#x "
"is in wrong format: expected %#08x, got %#08x.\n",
surface_id, image_format->fourcc, map->image.format.fourcc);
err = AVERROR(EIO);
goto fail;
}
map->flags |= VAAPI_MAP_DIRECT;
} else {
vas = vaCreateImage(hwctx->display, image_format,
hwfc->width, hwfc->height, &map->image);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to create image for "
"surface %#x: %d (%s).\n",
surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
if (flags & VAAPI_MAP_READ) {
vas = vaGetImage(hwctx->display, surface_id, 0, 0,
hwfc->width, hwfc->height, map->image.image_id);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to read image from "
"surface %#x: %d (%s).\n",
surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
}
}
vas = vaMapBuffer(hwctx->display, map->image.buf, &address);
if (vas != VA_STATUS_SUCCESS) {
av_log(hwfc, AV_LOG_ERROR, "Failed to map image from surface "
"%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
dst->width = src->width;
dst->height = src->height;
for (i = 0; i < map->image.num_planes; i++) {
dst->data[i] = (uint8_t*)address + map->image.offsets[i];
dst->linesize[i] = map->image.pitches[i];
}
if (
#ifdef VA_FOURCC_YV16
map->image.format.fourcc == VA_FOURCC_YV16 ||
#endif
map->image.format.fourcc == VA_FOURCC_YV12) {
// Chroma planes are YVU rather than YUV, so swap them.
FFSWAP(uint8_t*, dst->data[1], dst->data[2]);
}
dst->buf[0] = av_buffer_create((uint8_t*)map, sizeof(*map),
&vaapi_unmap_frame, hwfc, 0);
if (!dst->buf[0]) {
err = AVERROR(ENOMEM);
goto fail;
}
return 0;
fail:
if (map) {
if (address)
vaUnmapBuffer(hwctx->display, map->image.buf);
if (map->image.image_id != VA_INVALID_ID)
vaDestroyImage(hwctx->display, map->image.image_id);
av_free(map);
}
return err;
}
static int vaapi_transfer_data_from(AVHWFramesContext *hwfc,
AVFrame *dst, const AVFrame *src)
{
AVFrame *map;
int err;
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = dst->format;
err = vaapi_map_frame(hwfc, map, src, VAAPI_MAP_READ);
if (err)
goto fail;
err = av_frame_copy(dst, map);
if (err)
goto fail;
err = 0;
fail:
av_frame_free(&map);
return err;
}
static int vaapi_transfer_data_to(AVHWFramesContext *hwfc,
AVFrame *dst, const AVFrame *src)
{
AVFrame *map;
int err;
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = src->format;
err = vaapi_map_frame(hwfc, map, dst, VAAPI_MAP_WRITE);
if (err)
goto fail;
err = av_frame_copy(map, src);
if (err)
goto fail;
err = 0;
fail:
av_frame_free(&map);
return err;
}
const HWContextType ff_hwcontext_type_vaapi = {
.type = AV_HWDEVICE_TYPE_VAAPI,
.name = "VAAPI",
.device_hwctx_size = sizeof(AVVAAPIDeviceContext),
.device_priv_size = sizeof(VAAPIDeviceContext),
.device_hwconfig_size = sizeof(AVVAAPIHWConfig),
.frames_hwctx_size = sizeof(AVVAAPIFramesContext),
.frames_priv_size = sizeof(VAAPIFramesContext),
.device_init = &vaapi_device_init,
.device_uninit = &vaapi_device_uninit,
.frames_get_constraints = &vaapi_frames_get_constraints,
.frames_init = &vaapi_frames_init,
.frames_uninit = &vaapi_frames_uninit,
.frames_get_buffer = &vaapi_get_buffer,
.transfer_get_formats = &vaapi_transfer_get_formats,
.transfer_data_to = &vaapi_transfer_data_to,
.transfer_data_from = &vaapi_transfer_data_from,
.pix_fmts = (const enum AVPixelFormat[]) {
AV_PIX_FMT_VAAPI,
AV_PIX_FMT_NONE
},
};