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mpv/video/vdpau.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 "vdpau.h"
#include "osdep/timer.h"
#include "video/out/x11_common.h"
#include "video/img_format.h"
#include "video/mp_image.h"
static void mark_vdpau_objects_uninitialized(struct mp_vdpau_ctx *ctx)
{
for (int i = 0; i < MAX_VIDEO_SURFACES; i++)
ctx->video_surfaces[i].surface = VDP_INVALID_HANDLE;
ctx->vdp_device = VDP_INVALID_HANDLE;
}
static void preemption_callback(VdpDevice device, void *context)
{
struct mp_vdpau_ctx *ctx = context;
ctx->is_preempted = true;
}
static int win_x11_init_vdpau_procs(struct mp_vdpau_ctx *ctx)
{
struct vo_x11_state *x11 = ctx->x11;
VdpStatus vdp_st;
// Don't operate on ctx->vdp directly, so that even if init fails, ctx->vdp
// will have the function pointers from the previous successful init, and
// won't randomly make other code crash on calling NULL pointers.
struct vdp_functions vdp = {0};
if (!x11)
return -1;
struct vdp_function {
const int id;
int offset;
};
static const struct vdp_function vdp_func[] = {
#define VDP_FUNCTION(_, macro_name, mp_name) {macro_name, offsetof(struct vdp_functions, mp_name)},
#include "video/vdpau_functions.inc"
#undef VDP_FUNCTION
{0, -1}
};
VdpGetProcAddress *get_proc_address;
vdp_st = vdp_device_create_x11(x11->display, x11->screen, &ctx->vdp_device,
&get_proc_address);
if (vdp_st != VDP_STATUS_OK) {
if (ctx->is_preempted)
MP_DBG(ctx, "Error calling vdp_device_create_x11 while preempted: %d\n",
vdp_st);
else
MP_ERR(ctx, "Error when calling vdp_device_create_x11: %d\n", vdp_st);
return -1;
}
for (const struct vdp_function *dsc = vdp_func; dsc->offset >= 0; dsc++) {
vdp_st = get_proc_address(ctx->vdp_device, dsc->id,
(void **)((char *)&vdp + dsc->offset));
if (vdp_st != VDP_STATUS_OK) {
MP_ERR(ctx, "Error when calling vdp_get_proc_address(function "
"id %d): %s\n", dsc->id,
vdp.get_error_string ? vdp.get_error_string(vdp_st) : "?");
return -1;
}
}
ctx->vdp = vdp;
ctx->get_proc_address = get_proc_address;
vdp_st = vdp.preemption_callback_register(ctx->vdp_device,
preemption_callback, ctx);
return 0;
}
static int handle_preemption(struct mp_vdpau_ctx *ctx)
{
if (!ctx->is_preempted)
return 0;
mark_vdpau_objects_uninitialized(ctx);
if (!ctx->preemption_user_notified) {
MP_ERR(ctx, "Got display preemption notice! Will attempt to recover.\n");
ctx->preemption_user_notified = true;
}
/* Trying to initialize seems to be quite slow, so only try once a
* second to avoid using 100% CPU. */
if (ctx->last_preemption_retry_fail &&
mp_time_sec() - ctx->last_preemption_retry_fail < 1.0)
return -1;
if (win_x11_init_vdpau_procs(ctx) < 0) {
ctx->last_preemption_retry_fail = mp_time_sec();
return -1;
}
ctx->preemption_user_notified = false;
ctx->last_preemption_retry_fail = 0;
ctx->is_preempted = false;
ctx->preemption_counter++;
MP_INFO(ctx, "Recovered from display preemption.\n");
return 1;
}
// Check whether vdpau initialization and preemption status is ok and we can
// proceed normally.
bool mp_vdpau_status_ok(struct mp_vdpau_ctx *ctx)
{
return handle_preemption(ctx) >= 0;
}
static void release_decoder_surface(void *ptr)
{
bool *in_use_ptr = ptr;
*in_use_ptr = false;
}
static struct mp_image *create_ref(struct surface_entry *e)
{
assert(!e->in_use);
e->in_use = true;
struct mp_image *res =
mp_image_new_custom_ref(&(struct mp_image){0}, &e->in_use,
release_decoder_surface);
mp_image_setfmt(res, IMGFMT_VDPAU);
mp_image_set_size(res, e->w, e->h);
res->planes[0] = (void *)"dummy"; // must be non-NULL, otherwise arbitrary
res->planes[3] = (void *)(intptr_t)e->surface;
return res;
}
struct mp_image *mp_vdpau_get_video_surface(struct mp_vdpau_ctx *ctx,
VdpChromaType chroma, int w, int h)
{
struct vdp_functions *vdp = &ctx->vdp;
VdpStatus vdp_st;
// Destroy all unused surfaces that don't have matching parameters
for (int n = 0; n < MAX_VIDEO_SURFACES; n++) {
struct surface_entry *e = &ctx->video_surfaces[n];
if (!e->in_use && e->surface != VDP_INVALID_HANDLE) {
if (e->chroma != chroma || e->w != w || e->h != h) {
vdp_st = vdp->video_surface_destroy(e->surface);
CHECK_VDP_WARNING(ctx, "Error when calling vdp_video_surface_destroy");
e->surface = VDP_INVALID_HANDLE;
}
}
}
// Try to find an existing unused surface
for (int n = 0; n < MAX_VIDEO_SURFACES; n++) {
struct surface_entry *e = &ctx->video_surfaces[n];
if (!e->in_use && e->surface != VDP_INVALID_HANDLE) {
assert(e->w == w && e->h == h);
assert(e->chroma == chroma);
return create_ref(e);
}
}
// Allocate new surface
for (int n = 0; n < MAX_VIDEO_SURFACES; n++) {
struct surface_entry *e = &ctx->video_surfaces[n];
if (!e->in_use) {
assert(e->surface == VDP_INVALID_HANDLE);
e->chroma = chroma;
e->w = w;
e->h = h;
if (ctx->is_preempted) {
MP_WARN(ctx, "Preempted, no surface.\n");
} else {
vdp_st = vdp->video_surface_create(ctx->vdp_device, chroma,
w, h, &e->surface);
CHECK_VDP_WARNING(ctx, "Error when calling vdp_video_surface_create");
}
return create_ref(e);
}
}
MP_ERR(ctx, "no surfaces available in mp_vdpau_get_video_surface\n");
return NULL;
}
struct mp_vdpau_ctx *mp_vdpau_create_device_x11(struct mp_log *log,
struct vo_x11_state *x11)
{
struct mp_vdpau_ctx *ctx = talloc_ptrtype(NULL, ctx);
*ctx = (struct mp_vdpau_ctx) {
.log = log,
.x11 = x11,
};
mark_vdpau_objects_uninitialized(ctx);
if (win_x11_init_vdpau_procs(ctx) < 0) {
if (ctx->vdp.device_destroy)
ctx->vdp.device_destroy(ctx->vdp_device);
talloc_free(ctx);
return NULL;
}
return ctx;
}
void mp_vdpau_destroy(struct mp_vdpau_ctx *ctx)
{
struct vdp_functions *vdp = &ctx->vdp;
VdpStatus vdp_st;
for (int i = 0; i < MAX_VIDEO_SURFACES; i++) {
// can't hold references past context lifetime
assert(!ctx->video_surfaces[i].in_use);
if (ctx->video_surfaces[i].surface != VDP_INVALID_HANDLE) {
vdp_st = vdp->video_surface_destroy(ctx->video_surfaces[i].surface);
CHECK_VDP_WARNING(ctx, "Error when calling vdp_video_surface_destroy");
}
}
if (ctx->vdp_device != VDP_INVALID_HANDLE) {
vdp_st = vdp->device_destroy(ctx->vdp_device);
CHECK_VDP_WARNING(ctx, "Error when calling vdp_device_destroy");
}
talloc_free(ctx);
}
bool mp_vdpau_get_format(int imgfmt, VdpChromaType *out_chroma_type,
VdpYCbCrFormat *out_pixel_format)
{
VdpChromaType chroma = VDP_CHROMA_TYPE_420;
VdpYCbCrFormat ycbcr = (VdpYCbCrFormat)-1;
switch (imgfmt) {
case IMGFMT_420P:
ycbcr = VDP_YCBCR_FORMAT_YV12;
break;
case IMGFMT_NV12:
ycbcr = VDP_YCBCR_FORMAT_NV12;
break;
case IMGFMT_YUYV:
ycbcr = VDP_YCBCR_FORMAT_YUYV;
chroma = VDP_CHROMA_TYPE_422;
break;
case IMGFMT_UYVY:
ycbcr = VDP_YCBCR_FORMAT_UYVY;
chroma = VDP_CHROMA_TYPE_422;
break;
case IMGFMT_VDPAU:
break;
default:
return false;
}
if (out_chroma_type)
*out_chroma_type = chroma;
if (out_pixel_format)
*out_pixel_format = ycbcr;
return true;
}
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