mpv/video/vaapi.c

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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include "vaapi.h"
#include "common/common.h"
#include "common/msg.h"
#include "osdep/threads.h"
#include "mp_image.h"
#include "img_format.h"
#include "mp_image_pool.h"
bool check_va_status(struct mp_log *log, VAStatus status, const char *msg)
{
if (status != VA_STATUS_SUCCESS) {
mp_err(log, "%s: %s\n", msg, vaErrorStr(status));
return false;
}
return true;
}
int va_get_colorspace_flag(enum mp_csp csp)
{
switch (csp) {
case MP_CSP_BT_601: return VA_SRC_BT601;
case MP_CSP_BT_709: return VA_SRC_BT709;
case MP_CSP_SMPTE_240M: return VA_SRC_SMPTE_240;
}
return 0;
}
struct fmtentry {
uint32_t va;
enum mp_imgfmt mp;
};
static const struct fmtentry va_to_imgfmt[] = {
{VA_FOURCC_NV12, IMGFMT_NV12},
{VA_FOURCC_YV12, IMGFMT_420P},
{VA_FOURCC_IYUV, IMGFMT_420P},
{VA_FOURCC_UYVY, IMGFMT_UYVY},
{VA_FOURCC_YUY2, IMGFMT_YUYV},
// Note: not sure about endian issues (the mp formats are byte-addressed)
{VA_FOURCC_RGBA, IMGFMT_RGBA},
{VA_FOURCC_RGBX, IMGFMT_RGBA},
{VA_FOURCC_BGRA, IMGFMT_BGRA},
{VA_FOURCC_BGRX, IMGFMT_BGRA},
{0 , IMGFMT_NONE}
};
enum mp_imgfmt va_fourcc_to_imgfmt(uint32_t fourcc)
{
for (const struct fmtentry *entry = va_to_imgfmt; entry->va; ++entry) {
if (entry->va == fourcc)
return entry->mp;
}
return IMGFMT_NONE;
}
uint32_t va_fourcc_from_imgfmt(int imgfmt)
{
for (const struct fmtentry *entry = va_to_imgfmt; entry->va; ++entry) {
if (entry->mp == imgfmt)
return entry->va;
}
return 0;
}
static struct mp_image *ctx_download_image(struct mp_hwdec_ctx *ctx,
struct mp_image *mpi,
struct mp_image_pool *swpool)
{
return va_surface_download(mpi, swpool);
}
struct va_image_formats {
VAImageFormat *entries;
int num;
};
static void va_get_formats(struct mp_vaapi_ctx *ctx)
{
struct va_image_formats *formats = talloc_ptrtype(ctx, formats);
formats->num = vaMaxNumImageFormats(ctx->display);
formats->entries = talloc_array(formats, VAImageFormat, formats->num);
VAStatus status = vaQueryImageFormats(ctx->display, formats->entries,
&formats->num);
if (!CHECK_VA_STATUS(ctx, "vaQueryImageFormats()"))
return;
MP_VERBOSE(ctx, "%d image formats available:\n", formats->num);
for (int i = 0; i < formats->num; i++)
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MP_VERBOSE(ctx, " %s\n", mp_tag_str(formats->entries[i].fourcc));
ctx->image_formats = formats;
}
struct mp_vaapi_ctx *va_initialize(VADisplay *display, struct mp_log *plog,
bool probing)
{
struct mp_vaapi_ctx *res = NULL;
struct mp_log *log = mp_log_new(NULL, plog, "/vaapi");
int major_version, minor_version;
int status = vaInitialize(display, &major_version, &minor_version);
if (status != VA_STATUS_SUCCESS && probing)
goto error;
if (!check_va_status(log, status, "vaInitialize()"))
goto error;
mp_verbose(log, "VA API version %d.%d\n", major_version, minor_version);
res = talloc_ptrtype(NULL, res);
*res = (struct mp_vaapi_ctx) {
.log = talloc_steal(res, log),
.display = display,
.hwctx = {
.type = HWDEC_VAAPI,
.priv = res,
.vaapi_ctx = res,
.download_image = ctx_download_image,
},
};
mpthread_mutex_init_recursive(&res->lock);
va_get_formats(res);
if (!res->image_formats)
goto error;
return res;
error:
if (res && res->display)
vaTerminate(res->display);
talloc_free(log);
talloc_free(res);
return NULL;
}
// Undo va_initialize, and close the VADisplay.
void va_destroy(struct mp_vaapi_ctx *ctx)
{
if (ctx) {
if (ctx->display)
vaTerminate(ctx->display);
pthread_mutex_destroy(&ctx->lock);
talloc_free(ctx);
}
}
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VAImageFormat *va_image_format_from_imgfmt(struct mp_vaapi_ctx *ctx, int imgfmt)
{
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struct va_image_formats *formats = ctx->image_formats;
const int fourcc = va_fourcc_from_imgfmt(imgfmt);
if (!formats || !formats->num || !fourcc)
return NULL;
for (int i = 0; i < formats->num; i++) {
if (formats->entries[i].fourcc == fourcc)
return &formats->entries[i];
}
return NULL;
}
struct va_surface {
struct mp_vaapi_ctx *ctx;
VADisplay display;
VASurfaceID id;
int rt_format;
// The actually allocated surface size (needed for cropping).
// mp_images can have a smaller size than this, which means they are
// cropped down to a smaller size by removing right/bottom pixels.
int w, h;
VAImage image; // used for software decoding case
bool is_derived; // is image derived by vaDeriveImage()?
};
VASurfaceID va_surface_id(struct mp_image *mpi)
{
return mpi && mpi->imgfmt == IMGFMT_VAAPI ?
(VASurfaceID)(uintptr_t)mpi->planes[3] : VA_INVALID_ID;
}
static struct va_surface *va_surface_in_mp_image(struct mp_image *mpi)
{
return mpi && mpi->imgfmt == IMGFMT_VAAPI ?
(struct va_surface*)mpi->planes[0] : NULL;
}
int va_surface_rt_format(struct mp_image *mpi)
{
struct va_surface *surface = va_surface_in_mp_image(mpi);
return surface ? surface->rt_format : 0;
}
// Return the real size of the underlying surface. (HW decoding might allocate
// padded surfaces for example.)
void va_surface_get_uncropped_size(struct mp_image *mpi, int *out_w, int *out_h)
{
struct va_surface *s = va_surface_in_mp_image(mpi);
*out_w = s ? s->w : 0;
*out_h = s ? s->h : 0;
}
static void release_va_surface(void *arg)
{
struct va_surface *surface = arg;
va_lock(surface->ctx);
if (surface->id != VA_INVALID_ID) {
if (surface->image.image_id != VA_INVALID_ID)
vaDestroyImage(surface->display, surface->image.image_id);
vaDestroySurfaces(surface->display, &surface->id, 1);
}
va_unlock(surface->ctx);
talloc_free(surface);
}
static struct mp_image *alloc_surface(struct mp_vaapi_ctx *ctx, int rt_format,
int w, int h)
{
VASurfaceID id = VA_INVALID_ID;
VAStatus status;
va_lock(ctx);
status = vaCreateSurfaces(ctx->display, rt_format, w, h, &id, 1, NULL, 0);
va_unlock(ctx);
if (!CHECK_VA_STATUS(ctx, "vaCreateSurfaces()"))
return NULL;
struct va_surface *surface = talloc_ptrtype(NULL, surface);
if (!surface)
return NULL;
*surface = (struct va_surface){
.ctx = ctx,
.id = id,
.rt_format = rt_format,
.w = w,
.h = h,
.display = ctx->display,
.image = { .image_id = VA_INVALID_ID, .buf = VA_INVALID_ID },
};
struct mp_image img = {0};
mp_image_setfmt(&img, IMGFMT_VAAPI);
mp_image_set_size(&img, w, h);
img.planes[0] = (uint8_t*)surface;
img.planes[3] = (uint8_t*)(uintptr_t)surface->id;
return mp_image_new_custom_ref(&img, surface, release_va_surface);
}
static void va_surface_image_destroy(struct va_surface *surface)
{
if (!surface || surface->image.image_id == VA_INVALID_ID)
return;
vaDestroyImage(surface->display, surface->image.image_id);
surface->image.image_id = VA_INVALID_ID;
surface->is_derived = false;
}
static int va_surface_image_alloc(struct mp_image *img, VAImageFormat *format)
{
struct va_surface *p = va_surface_in_mp_image(img);
if (!format || !p)
return -1;
VADisplay *display = p->display;
if (p->image.image_id != VA_INVALID_ID &&
p->image.format.fourcc == format->fourcc)
return 0;
int r = 0;
va_lock(p->ctx);
va_surface_image_destroy(p);
VAStatus status = vaDeriveImage(display, p->id, &p->image);
if (status == VA_STATUS_SUCCESS) {
/* vaDeriveImage() is supported, check format */
if (p->image.format.fourcc == format->fourcc &&
p->image.width == p->w && p->image.height == p->h)
{
p->is_derived = true;
MP_TRACE(p->ctx, "Using vaDeriveImage()\n");
} else {
vaDestroyImage(p->display, p->image.image_id);
status = VA_STATUS_ERROR_OPERATION_FAILED;
}
}
if (status != VA_STATUS_SUCCESS) {
p->image.image_id = VA_INVALID_ID;
status = vaCreateImage(p->display, format, p->w, p->h, &p->image);
if (!CHECK_VA_STATUS(p->ctx, "vaCreateImage()")) {
p->image.image_id = VA_INVALID_ID;
r = -1;
}
}
va_unlock(p->ctx);
return r;
}
// img must be a VAAPI surface; make sure its internal VAImage is allocated
// to a format corresponding to imgfmt (or return an error).
int va_surface_alloc_imgfmt(struct mp_image *img, int imgfmt)
{
struct va_surface *p = va_surface_in_mp_image(img);
if (!p)
return -1;
// Multiple FourCCs can refer to the same imgfmt, so check by doing the
// surjective conversion first.
if (p->image.image_id != VA_INVALID_ID &&
va_fourcc_to_imgfmt(p->image.format.fourcc) == imgfmt)
return 0;
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VAImageFormat *format = va_image_format_from_imgfmt(p->ctx, imgfmt);
if (!format)
return -1;
if (va_surface_image_alloc(img, format) < 0)
return -1;
return 0;
}
bool va_image_map(struct mp_vaapi_ctx *ctx, VAImage *image, struct mp_image *mpi)
{
int imgfmt = va_fourcc_to_imgfmt(image->format.fourcc);
if (imgfmt == IMGFMT_NONE)
return false;
void *data = NULL;
va_lock(ctx);
const VAStatus status = vaMapBuffer(ctx->display, image->buf, &data);
va_unlock(ctx);
if (!CHECK_VA_STATUS(ctx, "vaMapBuffer()"))
return false;
*mpi = (struct mp_image) {0};
mp_image_setfmt(mpi, imgfmt);
mp_image_set_size(mpi, image->width, image->height);
for (int p = 0; p < image->num_planes; p++) {
mpi->stride[p] = image->pitches[p];
mpi->planes[p] = (uint8_t *)data + image->offsets[p];
}
if (image->format.fourcc == VA_FOURCC_YV12) {
MPSWAP(int, mpi->stride[1], mpi->stride[2]);
MPSWAP(uint8_t *, mpi->planes[1], mpi->planes[2]);
}
return true;
}
bool va_image_unmap(struct mp_vaapi_ctx *ctx, VAImage *image)
{
va_lock(ctx);
const VAStatus status = vaUnmapBuffer(ctx->display, image->buf);
va_unlock(ctx);
return CHECK_VA_STATUS(ctx, "vaUnmapBuffer()");
}
// va_dst: copy destination, must be IMGFMT_VAAPI
// sw_src: copy source, must be a software pixel format
int va_surface_upload(struct mp_image *va_dst, struct mp_image *sw_src)
{
struct va_surface *p = va_surface_in_mp_image(va_dst);
if (!p)
return -1;
if (va_surface_alloc_imgfmt(va_dst, sw_src->imgfmt) < 0)
return -1;
struct mp_image img;
if (!va_image_map(p->ctx, &p->image, &img))
return -1;
assert(sw_src->w <= img.w && sw_src->h <= img.h);
mp_image_set_size(&img, sw_src->w, sw_src->h); // copy only visible part
mp_image_copy(&img, sw_src);
va_image_unmap(p->ctx, &p->image);
if (!p->is_derived) {
va_lock(p->ctx);
VAStatus status = vaPutImage(p->display, p->id,
p->image.image_id,
0, 0, sw_src->w, sw_src->h,
0, 0, sw_src->w, sw_src->h);
va_unlock(p->ctx);
if (!CHECK_VA_STATUS(p->ctx, "vaPutImage()"))
return -1;
}
if (p->is_derived)
va_surface_image_destroy(p);
return 0;
}
static struct mp_image *try_download(struct mp_image *src,
struct mp_image_pool *pool)
{
VAStatus status;
struct va_surface *p = va_surface_in_mp_image(src);
if (!p)
return NULL;
VAImage *image = &p->image;
if (image->image_id == VA_INVALID_ID ||
!va_fourcc_to_imgfmt(image->format.fourcc))
return NULL;
if (!p->is_derived) {
va_lock(p->ctx);
status = vaGetImage(p->display, p->id, 0, 0,
p->w, p->h, image->image_id);
va_unlock(p->ctx);
if (status != VA_STATUS_SUCCESS)
return NULL;
}
struct mp_image *dst = NULL;
struct mp_image tmp;
if (va_image_map(p->ctx, image, &tmp)) {
assert(src->w <= tmp.w && src->h <= tmp.h);
mp_image_set_size(&tmp, src->w, src->h); // copy only visible part
dst = mp_image_pool_get(pool, tmp.imgfmt, tmp.w, tmp.h);
if (dst) {
va_lock(p->ctx);
mp_check_gpu_memcpy(p->ctx->log, &p->ctx->gpu_memcpy_message);
va_unlock(p->ctx);
mp_image_copy_gpu(dst, &tmp);
mp_image_copy_attributes(dst, src);
}
va_image_unmap(p->ctx, image);
}
if (p->is_derived)
va_surface_image_destroy(p);
return dst;
}
// Return a software copy of the IMGFMT_VAAPI src image.
// pool is optional (used for allocating returned images).
struct mp_image *va_surface_download(struct mp_image *src,
struct mp_image_pool *pool)
{
struct va_surface *p = va_surface_in_mp_image(src);
if (!p)
return NULL;
struct mp_vaapi_ctx *ctx = p->ctx;
va_lock(ctx);
VAStatus status = vaSyncSurface(p->display, p->id);
va_unlock(ctx);
if (!CHECK_VA_STATUS(ctx, "vaSyncSurface()"))
return NULL;
struct mp_image *mpi = try_download(src, pool);
if (mpi)
return mpi;
// We have no clue which format will work, so try them all.
// Make sure to start with the most preferred format (nv12), to avoid
// slower code paths.
for (int n = 0; va_to_imgfmt[n].mp; n++) {
VAImageFormat *format =
va_image_format_from_imgfmt(ctx, va_to_imgfmt[n].mp);
if (format) {
if (va_surface_image_alloc(src, format) < 0)
continue;
mpi = try_download(src, pool);
if (mpi)
return mpi;
}
}
MP_ERR(ctx, "failed to get surface data.\n");
return NULL;
}
struct pool_alloc_ctx {
struct mp_vaapi_ctx *vaapi;
int rt_format;
};
static struct mp_image *alloc_pool(void *pctx, int fmt, int w, int h)
{
struct pool_alloc_ctx *alloc_ctx = pctx;
if (fmt != IMGFMT_VAAPI)
return NULL;
return alloc_surface(alloc_ctx->vaapi, alloc_ctx->rt_format, w, h);
}
// The allocator of the given image pool to allocate VAAPI surfaces, using
// the given rt_format.
void va_pool_set_allocator(struct mp_image_pool *pool, struct mp_vaapi_ctx *ctx,
int rt_format)
{
struct pool_alloc_ctx *alloc_ctx = talloc_ptrtype(pool, alloc_ctx);
*alloc_ctx = (struct pool_alloc_ctx){
.vaapi = ctx,
.rt_format = rt_format,
};
mp_image_pool_set_allocator(pool, alloc_pool, alloc_ctx);
mp_image_pool_set_lru(pool);
}
bool va_guess_if_emulated(struct mp_vaapi_ctx *ctx)
{
va_lock(ctx);
const char *s = vaQueryVendorString(ctx->display);
va_unlock(ctx);
return s && strstr(s, "VDPAU backend");
}