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hwcontext_vaapi.c
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/*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; 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_WIN32
# include <windows.h>
#define COBJMACROS
# include <initguid.h>
# include <dxgi1_2.h>
# include "compat/w32dlfcn.h"
# include <va/va_win32.h>
typedef HRESULT (WINAPI *PFN_CREATE_DXGI_FACTORY)(REFIID riid, void **ppFactory);
#endif
#if HAVE_VAAPI_X11
# include <va/va_x11.h>
#endif
#if HAVE_VAAPI_DRM
# include <va/va_drm.h>
#endif
#if CONFIG_LIBDRM
# include <va/va_drmcommon.h>
# include <xf86drm.h>
# include <drm_fourcc.h>
# ifndef DRM_FORMAT_MOD_INVALID
# define DRM_FORMAT_MOD_INVALID ((1ULL << 56) - 1)
# endif
#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_drm.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 {
/**
* The public AVVAAPIDeviceContext. See hwcontext_vaapi.h for it.
*/
AVVAAPIDeviceContext p;
// Surface formats which can be used with this device.
VAAPISurfaceFormat *formats;
int nb_formats;
} VAAPIDeviceContext;
typedef struct VAAPIFramesContext {
/**
* The public AVVAAPIFramesContext. See hwcontext_vaapi.h for it.
*/
AVVAAPIFramesContext p;
// 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;
// Caches whether VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2 is unsupported for
// surface imports.
int prime_2_import_unsupported;
} VAAPIFramesContext;
typedef struct VAAPIMapping {
// Handle to the derived or copied image which is mapped.
VAImage image;
// The mapping flags actually used.
int flags;
} VAAPIMapping;
typedef struct VAAPIFormat {
unsigned int fourcc;
unsigned int rt_format;
enum AVPixelFormat pix_fmt;
int chroma_planes_swapped;
} VAAPIFormatDescriptor;
#define MAP(va, rt, av, swap_uv) { \
VA_FOURCC_ ## va, \
VA_RT_FORMAT_ ## rt, \
AV_PIX_FMT_ ## av, \
swap_uv, \
}
// 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 const VAAPIFormatDescriptor vaapi_format_map[] = {
MAP(NV12, YUV420, NV12, 0),
#ifdef VA_FOURCC_I420
MAP(I420, YUV420, YUV420P, 0),
#endif
MAP(YV12, YUV420, YUV420P, 1),
MAP(IYUV, YUV420, YUV420P, 0),
MAP(422H, YUV422, YUV422P, 0),
#ifdef VA_FOURCC_YV16
MAP(YV16, YUV422, YUV422P, 1),
#endif
MAP(UYVY, YUV422, UYVY422, 0),
MAP(YUY2, YUV422, YUYV422, 0),
#ifdef VA_FOURCC_Y210
MAP(Y210, YUV422_10, Y210, 0),
#endif
#ifdef VA_FOURCC_Y212
MAP(Y212, YUV422_12, Y212, 0),
#endif
MAP(411P, YUV411, YUV411P, 0),
MAP(422V, YUV422, YUV440P, 0),
MAP(444P, YUV444, YUV444P, 0),
#ifdef VA_FOURCC_XYUV
MAP(XYUV, YUV444, VUYX, 0),
#endif
MAP(Y800, YUV400, GRAY8, 0),
#ifdef VA_FOURCC_P010
MAP(P010, YUV420_10BPP, P010, 0),
#endif
#ifdef VA_FOURCC_P012
MAP(P012, YUV420_12, P012, 0),
#endif
MAP(BGRA, RGB32, BGRA, 0),
MAP(BGRX, RGB32, BGR0, 0),
MAP(RGBA, RGB32, RGBA, 0),
MAP(RGBX, RGB32, RGB0, 0),
#ifdef VA_FOURCC_ABGR
MAP(ABGR, RGB32, ABGR, 0),
MAP(XBGR, RGB32, 0BGR, 0),
#endif
MAP(ARGB, RGB32, ARGB, 0),
MAP(XRGB, RGB32, 0RGB, 0),
#ifdef VA_FOURCC_X2R10G10B10
MAP(X2R10G10B10, RGB32_10, X2RGB10, 0),
#endif
#ifdef VA_FOURCC_Y410
// libva doesn't include a fourcc for XV30 and the driver only declares
// support for Y410, so we must fudge the mapping here.
MAP(Y410, YUV444_10, XV30, 0),
#endif
#ifdef VA_FOURCC_Y412
// libva doesn't include a fourcc for XV36 and the driver only declares
// support for Y412, so we must fudge the mapping here.
MAP(Y412, YUV444_12, XV36, 0),
#endif
};
#undef MAP
static const VAAPIFormatDescriptor *
vaapi_format_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];
return NULL;
}
static const VAAPIFormatDescriptor *
vaapi_format_from_pix_fmt(enum AVPixelFormat pix_fmt)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(vaapi_format_map); i++)
if (vaapi_format_map[i].pix_fmt == pix_fmt)
return &vaapi_format_map[i];
return NULL;
}
static enum AVPixelFormat vaapi_pix_fmt_from_fourcc(unsigned int fourcc)
{
const VAAPIFormatDescriptor *desc;
desc = vaapi_format_from_fourcc(fourcc);
if (desc)
return desc->pix_fmt;
else
return AV_PIX_FMT_NONE;
}
static int vaapi_get_image_format(AVHWDeviceContext *hwdev,
enum AVPixelFormat pix_fmt,
VAImageFormat **image_format)
{
VAAPIDeviceContext *ctx = hwdev->hwctx;
int i;
for (i = 0; i < ctx->nb_formats; i++) {
if (ctx->formats[i].pix_fmt == pix_fmt) {
if (image_format)
*image_format = &ctx->formats[i].image_format;
return 0;
}
}
return AVERROR(ENOSYS);
}
static int vaapi_frames_get_constraints(AVHWDeviceContext *hwdev,
const void *hwconfig,
AVHWFramesConstraints *constraints)
{
VAAPIDeviceContext *ctx = hwdev->hwctx;
AVVAAPIDeviceContext *hwctx = &ctx->p;
const AVVAAPIHWConfig *config = hwconfig;
VASurfaceAttrib *attr_list = NULL;
VAStatus vas;
enum AVPixelFormat pix_fmt;
unsigned int fourcc;
int err, i, j, attr_count, pix_fmt_count;
if (config &&
!(hwctx->driver_quirks & AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES)) {
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++) {
int k;
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)
continue;
for (k = 0; k < j; k++) {
if (constraints->valid_sw_formats[k] == pix_fmt)
break;
}
if (k == j)
constraints->valid_sw_formats[j++] = pix_fmt;
}
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 = j = 0; i < ctx->nb_formats; i++) {
int k;
for (k = 0; k < j; k++) {
if (constraints->valid_sw_formats[k] == ctx->formats[i].pix_fmt)
break;
}
if (k == j)
constraints->valid_sw_formats[j++] = ctx->formats[i].pix_fmt;
}
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);
return err;
}
static const struct {
const char *friendly_name;
const char *match_string;
unsigned int quirks;
} vaapi_driver_quirks_table[] = {
#if !VA_CHECK_VERSION(1, 0, 0)
// The i965 driver did not conform before version 2.0.
{
"Intel i965 (Quick Sync)",
"i965",
AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS,
},
#endif
{
"Intel iHD",
"ubit",
AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE,
},
{
"VDPAU wrapper",
"Splitted-Desktop Systems VDPAU backend for VA-API",
AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES,
},
};
static int vaapi_device_init(AVHWDeviceContext *hwdev)
{
VAAPIDeviceContext *ctx = hwdev->hwctx;
AVVAAPIDeviceContext *hwctx = &ctx->p;
VAImageFormat *image_list = NULL;
VAStatus vas;
const char *vendor_string;
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;
}
}
vendor_string = vaQueryVendorString(hwctx->display);
if (vendor_string)
av_log(hwdev, AV_LOG_VERBOSE, "VAAPI driver: %s.\n", vendor_string);
if (hwctx->driver_quirks & AV_VAAPI_DRIVER_QUIRK_USER_SET) {
av_log(hwdev, AV_LOG_VERBOSE, "Using quirks set by user (%#x).\n",
hwctx->driver_quirks);
} else {
// Detect the driver in use and set quirk flags if necessary.
hwctx->driver_quirks = 0;
if (vendor_string) {
for (i = 0; i < FF_ARRAY_ELEMS(vaapi_driver_quirks_table); i++) {
if (strstr(vendor_string,
vaapi_driver_quirks_table[i].match_string)) {
av_log(hwdev, AV_LOG_VERBOSE, "Matched driver string "
"as known nonstandard driver \"%s\", setting "
"quirks (%#x).\n",
vaapi_driver_quirks_table[i].friendly_name,
vaapi_driver_quirks_table[i].quirks);
hwctx->driver_quirks |=
vaapi_driver_quirks_table[i].quirks;
break;
}
}
if (!(i < FF_ARRAY_ELEMS(vaapi_driver_quirks_table))) {
av_log(hwdev, AV_LOG_VERBOSE, "Driver not found in known "
"nonstandard list, using standard behaviour.\n");
}
} else {
av_log(hwdev, AV_LOG_VERBOSE, "Driver has no vendor string, "
"assuming standard behaviour.\n");
}
}
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->hwctx;
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, size_t size)
{
AVHWFramesContext *hwfc = opaque;
VAAPIFramesContext *ctx = hwfc->hwctx;
AVVAAPIFramesContext *avfc = &ctx->p;
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
VASurfaceID surface_id;
VAStatus vas;
AVBufferRef *ref;
if (hwfc->initial_pool_size > 0 &&
avfc->nb_surfaces >= hwfc->initial_pool_size)
return NULL;
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)
{
VAAPIFramesContext *ctx = hwfc->hwctx;
AVVAAPIFramesContext *avfc = &ctx->p;
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
const VAAPIFormatDescriptor *desc;
VAImageFormat *expected_format;
AVBufferRef *test_surface = NULL;
VASurfaceID test_surface_id;
VAImage test_image;
VAStatus vas;
int err, i;
desc = vaapi_format_from_pix_fmt(hwfc->sw_format);
if (!desc) {
av_log(hwfc, AV_LOG_ERROR, "Unsupported format: %s.\n",
av_get_pix_fmt_name(hwfc->sw_format));
return AVERROR(EINVAL);
}
if (!hwfc->pool) {
if (!(hwctx->driver_quirks & AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES)) {
int need_memory_type = !(hwctx->driver_quirks & AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE);
int need_pixel_format = 1;
for (i = 0; i < avfc->nb_attributes; i++) {
if (avfc->attributes[i].type == VASurfaceAttribMemoryType)
need_memory_type = 0;
if (avfc->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 = desc->fourcc,
};
}
av_assert0(i == ctx->nb_attributes);
} else {
ctx->attributes = NULL;
ctx->nb_attributes = 0;
}
ctx->rt_format = desc->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;
}
ffhwframesctx(hwfc)->pool_internal =
av_buffer_pool_init2(sizeof(VASurfaceID), hwfc,
&vaapi_pool_alloc, NULL);
if (!ffhwframesctx(hwfc)->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(ffhwframesctx(hwfc)->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)
{
VAAPIFramesContext *ctx = hwfc->hwctx;
AVVAAPIFramesContext *avfc = &ctx->p;
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->hwctx;
enum AVPixelFormat *pix_fmts;
int i, k, sw_format_available;
sw_format_available = 0;
for (i = 0; i < ctx->nb_formats; i++) {
if (ctx->formats[i].pix_fmt == hwfc->sw_format)
sw_format_available = 1;
}
pix_fmts = av_malloc((ctx->nb_formats + 1) * sizeof(*pix_fmts));
if (!pix_fmts)
return AVERROR(ENOMEM);
if (sw_format_available) {
pix_fmts[0] = hwfc->sw_format;
k = 1;
} else {
k = 0;
}
for (i = 0; i < ctx->nb_formats; i++) {
if (ctx->formats[i].pix_fmt == hwfc->sw_format)
continue;
av_assert0(k < ctx->nb_formats);
pix_fmts[k++] = ctx->formats[i].pix_fmt;
}
pix_fmts[k] = AV_PIX_FMT_NONE;
*formats = pix_fmts;
return 0;
}
static void vaapi_unmap_frame(AVHWFramesContext *hwfc,
HWMapDescriptor *hwmap)
{
AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
VAAPIMapping *map = hwmap->priv;
VASurfaceID surface_id;
VAStatus vas;
surface_id = (VASurfaceID)(uintptr_t)hwmap->source->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 & AV_HWFRAME_MAP_WRITE) &&
!(map->flags & AV_HWFRAME_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->hwctx;
VASurfaceID surface_id;
const VAAPIFormatDescriptor *desc;
VAImageFormat *image_format;
VAAPIMapping *map;
VAStatus vas;
void *address = NULL;
int err, i;
#if VA_CHECK_VERSION(1, 21, 0)
uint32_t vaflags = 0;
#endif
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 & AV_HWFRAME_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 & AV_HWFRAME_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 err;
}
map = av_malloc(sizeof(*map));
if (!map)
return AVERROR(ENOMEM);
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 && dst->format == hwfc->sw_format &&
((flags & AV_HWFRAME_MAP_DIRECT) || !(flags & AV_HWFRAME_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 |= AV_HWFRAME_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 & AV_HWFRAME_MAP_OVERWRITE)) {
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;
}
}
}
#if VA_CHECK_VERSION(1, 21, 0)
if (flags & AV_HWFRAME_MAP_READ)
vaflags |= VA_MAPBUFFER_FLAG_READ;
if (flags & AV_HWFRAME_MAP_WRITE)
vaflags |= VA_MAPBUFFER_FLAG_WRITE;
// On drivers not implementing vaMapBuffer2 libva calls vaMapBuffer instead.
vas = vaMapBuffer2(hwctx->display, map->image.buf, &address, vaflags);
#else
vas = vaMapBuffer(hwctx->display, map->image.buf, &address);
#endif
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;
}
err = ff_hwframe_map_create(src->hw_frames_ctx,
dst, src, &vaapi_unmap_frame, map);
if (err < 0)
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];
}
desc = vaapi_format_from_fourcc(map->image.format.fourcc);
if (desc && desc->chroma_planes_swapped) {
// Chroma planes are YVU rather than YUV, so swap them.
FFSWAP(uint8_t*, dst->data[1], dst->data[2]);
}
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;
if (dst->width > hwfc->width || dst->height > hwfc->height)
return AVERROR(EINVAL);
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = dst->format;
err = vaapi_map_frame(hwfc, map, src, AV_HWFRAME_MAP_READ);
if (err)
goto fail;
map->width = dst->width;
map->height = dst->height;
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;
if (src->width > hwfc->width || src->height > hwfc->height)
return AVERROR(EINVAL);
map = av_frame_alloc();
if (!map)
return AVERROR(ENOMEM);
map->format = src->format;
err = vaapi_map_frame(hwfc, map, dst, AV_HWFRAME_MAP_WRITE | AV_HWFRAME_MAP_OVERWRITE);
if (err)
goto fail;
map->width = src->width;
map->height = src->height;
err = av_frame_copy(map, src);
if (err)