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FFmpeg/libavutil/hwcontext_vaapi.c
Mark Thompson fe498ef514 hwcontext_vaapi: Return all formats for constraints without config 
No longer make a dummy device configuration to query.  Instead, just
return everything we recognise from the whole format list.  Also
change the device setup code to query that list only, rather than
intersecting it with the constraint output.

This makes hwupload more usable on mesa/gallium where the video
processor only declares support for RGB formats, making it unable to
deal with YUV formats before this patch.  It might introduce some
different trickier failures in the internal upload/download code
because the set of allowed formats there has changed, though I didn't
find any obvious regressions with i965.
2016-06-21 20:42:22 +01:00

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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 "config.h"
#if HAVE_VAAPI_X11
# include <va/va_x11.h>
#endif
#if HAVE_VAAPI_DRM
# include <va/va_drm.h>
#endif
#include <fcntl.h>
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#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 VAAPIDevicePriv {
#if HAVE_VAAPI_X11
Display *x11_display;
#endif
int drm_fd;
} VAAPIDevicePriv;
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;
VAAPIDeviceContext *ctx = hwdev->internal->priv;
VASurfaceAttrib *attr_list = NULL;
VAStatus vas;
enum AVPixelFormat pix_fmt;
unsigned int fourcc;
int err, i, j, attr_count, pix_fmt_count;
if (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;
}
} else {
// No configuration supplied.
// Return the full set of image formats known by the implementation.
constraints->valid_sw_formats = av_malloc_array(ctx->nb_formats + 1,
sizeof(pix_fmt));
if (!constraints->valid_sw_formats) {
err = AVERROR(ENOMEM);
goto fail;
}
for (i = 0; i < ctx->nb_formats; i++)
constraints->valid_sw_formats[i] = ctx->formats[i].pix_fmt;
constraints->valid_sw_formats[i] = 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);
return err;
}
static int vaapi_device_init(AVHWDeviceContext *hwdev)
{
VAAPIDeviceContext *ctx = hwdev->internal->priv;
AVVAAPIDeviceContext *hwctx = hwdev->hwctx;
VAImageFormat *image_list = NULL;
VAStatus vas;
int err, i, image_count;
enum AVPixelFormat pix_fmt;
unsigned int fourcc;
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);
if (pix_fmt == AV_PIX_FMT_NONE) {
av_log(hwdev, AV_LOG_DEBUG, "Format %#x -> unknown.\n",
fourcc);
} else {
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;
}
}
av_free(image_list);
return 0;
fail:
av_freep(&ctx->formats);
av_free(image_list);
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;
}
static void vaapi_device_free(AVHWDeviceContext *ctx)
{
AVVAAPIDeviceContext *hwctx = ctx->hwctx;
VAAPIDevicePriv *priv = ctx->user_opaque;
if (hwctx->display)
vaTerminate(hwctx->display);
#if HAVE_VAAPI_X11
if (priv->x11_display)
XCloseDisplay(priv->x11_display);
#endif
if (priv->drm_fd >= 0)
close(priv->drm_fd);
av_freep(&priv);
}
static int vaapi_device_create(AVHWDeviceContext *ctx, const char *device,
AVDictionary *opts, int flags)
{
AVVAAPIDeviceContext *hwctx = ctx->hwctx;
VAAPIDevicePriv *priv;
VADisplay display = 0;
VAStatus vas;
int major, minor;
priv = av_mallocz(sizeof(*priv));
if (!priv)
return AVERROR(ENOMEM);
priv->drm_fd = -1;
ctx->user_opaque = priv;
ctx->free = vaapi_device_free;
#if HAVE_VAAPI_X11
if (!display && !(device && device[0] == '/')) {
// Try to open the device as an X11 display.
priv->x11_display = XOpenDisplay(device);
if (!priv->x11_display) {
av_log(ctx, AV_LOG_VERBOSE, "Cannot open X11 display "
"%s.\n", XDisplayName(device));
} else {
display = vaGetDisplay(priv->x11_display);
if (!display) {
av_log(ctx, AV_LOG_ERROR, "Cannot open a VA display "
"from X11 display %s.\n", XDisplayName(device));
return AVERROR_UNKNOWN;
}
av_log(ctx, AV_LOG_VERBOSE, "Opened VA display via "
"X11 display %s.\n", XDisplayName(device));
}
}
#endif
#if HAVE_VAAPI_DRM
if (!display && device) {
// Try to open the device as a DRM path.
priv->drm_fd = open(device, O_RDWR);
if (priv->drm_fd < 0) {
av_log(ctx, AV_LOG_VERBOSE, "Cannot open DRM device %s.\n",
device);
} else {
display = vaGetDisplayDRM(priv->drm_fd);
if (!display) {
av_log(ctx, AV_LOG_ERROR, "Cannot open a VA display "
"from DRM device %s.\n", device);
return AVERROR_UNKNOWN;
}
av_log(ctx, AV_LOG_VERBOSE, "Opened VA display via "
"DRM device %s.\n", device);
}
}
#endif
if (!display) {
av_log(ctx, AV_LOG_ERROR, "No VA display found for "
"device: %s.\n", device ? device : "");
return AVERROR(EINVAL);
}
hwctx->display = display;
vas = vaInitialize(display, &major, &minor);
if (vas != VA_STATUS_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Failed to initialise VAAPI "
"connection: %d (%s).\n", vas, vaErrorStr(vas));
return AVERROR(EIO);
}
av_log(ctx, AV_LOG_VERBOSE, "Initialised VAAPI connection: "
"version %d.%d\n", major, minor);
return 0;
}
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_create = &vaapi_device_create,
.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
},
};
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