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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 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.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stddef.h>
#include <assert.h>
#include <libavcodec/avcodec.h>
#include <libavutil/common.h>
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_vaapi.h>
#include "config.h"
#include "lavc.h"
#include "common/common.h"
#include "common/av_common.h"
#include "video/fmt-conversion.h"
#include "video/vaapi.h"
#include "video/mp_image_pool.h"
#include "video/hwdec.h"
#include "video/filter/vf.h"
#define ADDITIONAL_SURFACES (HWDEC_EXTRA_SURFACES + HWDEC_DELAY_QUEUE_COUNT)
struct priv {
struct mp_log *log;
struct mp_vaapi_ctx *ctx;
bool own_ctx;
AVBufferRef *device_ref;
AVBufferRef *frames_ref;
};
static int init_decoder(struct lavc_ctx *ctx, int w, int h)
{
struct priv *p = ctx->hwdec_priv;
// From avconv_vaapi.c. Disgusting, but apparently this is the best we get.
int required_sw_format = ctx->avctx->sw_pix_fmt == AV_PIX_FMT_YUV420P10 ?
AV_PIX_FMT_P010 : AV_PIX_FMT_NV12;
assert(!ctx->avctx->hw_frames_ctx);
if (p->frames_ref) {
AVHWFramesContext *fctx = (void *)p->frames_ref->data;
if (fctx->width != w || fctx->height != h ||
fctx->sw_format != required_sw_format)
{
av_buffer_unref(&p->frames_ref);
}
}
if (!p->frames_ref) {
p->frames_ref = av_hwframe_ctx_alloc(p->device_ref);
if (!p->frames_ref)
return -1;
AVHWFramesContext *fctx = (void *)p->frames_ref->data;
fctx->format = AV_PIX_FMT_VAAPI;
fctx->sw_format = required_sw_format;
fctx->width = w;
fctx->height = h;
fctx->initial_pool_size = hwdec_get_max_refs(ctx) + ADDITIONAL_SURFACES;
// Some mpv downstream code uses this.
fctx->user_opaque = p->ctx;
va_lock(p->ctx);
int res = av_hwframe_ctx_init(p->frames_ref);
va_unlock(p->ctx);
if (res > 0) {
MP_ERR(ctx, "Failed to allocate hw frames.\n");
av_buffer_unref(&p->frames_ref);
return -1;
}
}
ctx->avctx->hw_frames_ctx = av_buffer_ref(p->frames_ref);
if (!ctx->avctx->hw_frames_ctx)
return -1;
return 0;
}
static void uninit(struct lavc_ctx *ctx)
{
struct priv *p = ctx->hwdec_priv;
if (!p)
return;
av_buffer_unref(&p->frames_ref);
av_buffer_unref(&p->device_ref);
if (p->own_ctx)
va_destroy(p->ctx);
talloc_free(p);
ctx->hwdec_priv = NULL;
}
static int init(struct lavc_ctx *ctx, bool direct)
{
struct priv *p = talloc_ptrtype(NULL, p);
*p = (struct priv) {
.log = mp_log_new(p, ctx->log, "vaapi"),
};
if (direct) {
p->ctx = hwdec_devices_get(ctx->hwdec_devs, HWDEC_VAAPI)->ctx;
} else {
p->ctx = va_create_standalone(ctx->log, false);
if (!p->ctx) {
talloc_free(p);
return -1;
}
p->own_ctx = true;
}
ctx->hwdec_priv = p;
p->device_ref = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_VAAPI);
if (!p->device_ref)
return -1;
AVHWDeviceContext *hwctx = (void *)p->device_ref->data;
AVVAAPIDeviceContext *vactx = hwctx->hwctx;
vactx->display = p->ctx->display;
if (av_hwdevice_ctx_init(p->device_ref) < 0)
return -1;
return 0;
}
static int init_direct(struct lavc_ctx *ctx)
{
return init(ctx, true);
}
static int probe(struct lavc_ctx *ctx, struct vd_lavc_hwdec *hwdec,
const char *codec)
{
if (!hwdec_devices_load(ctx->hwdec_devs, HWDEC_VAAPI))
return HWDEC_ERR_NO_CTX;
return 0;
}
static int probe_copy(struct lavc_ctx *ctx, struct vd_lavc_hwdec *hwdec,
const char *codec)
{
struct mp_vaapi_ctx *dummy = va_create_standalone(ctx->log, true);
if (!dummy)
return HWDEC_ERR_NO_CTX;
bool emulated = va_guess_if_emulated(dummy);
va_destroy(dummy);
if (emulated)
return HWDEC_ERR_EMULATED;
return 0;
}
static int init_copy(struct lavc_ctx *ctx)
{
return init(ctx, false);
}
static void intel_shit_lock(struct lavc_ctx *ctx)
{
struct priv *p = ctx->hwdec_priv;
va_lock(p->ctx);
}
static void intel_crap_unlock(struct lavc_ctx *ctx)
{
struct priv *p = ctx->hwdec_priv;
va_unlock(p->ctx);
}
const struct vd_lavc_hwdec mp_vd_lavc_vaapi = {
.type = HWDEC_VAAPI,
.image_format = IMGFMT_VAAPI,
.volatile_context = true,
.probe = probe,
.init = init_direct,
.uninit = uninit,
.init_decoder = init_decoder,
.lock = intel_shit_lock,
.unlock = intel_crap_unlock,
};
const struct vd_lavc_hwdec mp_vd_lavc_vaapi_copy = {
.type = HWDEC_VAAPI_COPY,
.copying = true,
.image_format = IMGFMT_VAAPI,
.volatile_context = true,
.probe = probe_copy,
.init = init_copy,
.uninit = uninit,
.init_decoder = init_decoder,
.delay_queue = HWDEC_DELAY_QUEUE_COUNT,
};
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