mirror of https://github.com/mpv-player/mpv
131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/*
|
|
* This file is part of mpv.
|
|
*
|
|
* Copyright (c) 2016 Philip Langdale <philipl@overt.org>
|
|
*
|
|
* 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 <libavutil/hwcontext.h>
|
|
#include <libavutil/hwcontext_cuda.h>
|
|
|
|
#include "common/av_common.h"
|
|
#include "video/decode/lavc.h"
|
|
|
|
typedef struct CUVIDContext {
|
|
CUcontext cuda_ctx;
|
|
} CUVIDContext;
|
|
|
|
static void cuvid_ctx_free(AVHWDeviceContext *ctx)
|
|
{
|
|
AVCUDADeviceContext *hwctx = ctx->hwctx;
|
|
cuCtxDestroy(hwctx->cuda_ctx);
|
|
}
|
|
|
|
static int probe(struct lavc_ctx *ctx, struct vd_lavc_hwdec *hwdec,
|
|
const char *codec)
|
|
{
|
|
if (!hwdec_devices_load(ctx->hwdec_devs, HWDEC_CUDA))
|
|
return HWDEC_ERR_NO_CTX;
|
|
return 0;
|
|
}
|
|
|
|
static int init(struct lavc_ctx *ctx)
|
|
{
|
|
struct CUVIDContext *p = talloc_ptrtype(NULL, p);
|
|
|
|
*p = (struct CUVIDContext) {
|
|
.cuda_ctx = hwdec_devices_get(ctx->hwdec_devs, HWDEC_CUDA)->ctx,
|
|
};
|
|
ctx->hwdec_priv = p;
|
|
return 0;
|
|
}
|
|
|
|
static int init_decoder(struct lavc_ctx *ctx, int w, int h)
|
|
{
|
|
AVCodecContext *avctx = ctx->avctx;
|
|
AVCUDADeviceContext *device_hwctx;
|
|
AVHWDeviceContext *device_ctx;
|
|
AVHWFramesContext *hwframe_ctx;
|
|
CUVIDContext *priv = ctx->hwdec_priv;
|
|
int ret = 0;
|
|
|
|
if (avctx->hw_frames_ctx) {
|
|
MP_ERR(ctx, "hw_frames_ctx already initialised!\n");
|
|
return -1;
|
|
}
|
|
|
|
AVBufferRef *hw_device_ctx = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);
|
|
if (!hw_device_ctx) {
|
|
MP_WARN(ctx, "av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA) failed\n");
|
|
goto error;
|
|
}
|
|
|
|
device_ctx = (AVHWDeviceContext*)hw_device_ctx->data;
|
|
device_ctx->free = cuvid_ctx_free;
|
|
|
|
device_hwctx = device_ctx->hwctx;
|
|
device_hwctx->cuda_ctx = priv->cuda_ctx;
|
|
|
|
ret = av_hwdevice_ctx_init(hw_device_ctx);
|
|
if (ret < 0) {
|
|
MP_ERR(ctx, "av_hwdevice_ctx_init failed\n");
|
|
goto error;
|
|
}
|
|
|
|
avctx->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
|
|
if (!avctx->hw_frames_ctx) {
|
|
MP_ERR(ctx, "av_hwframe_ctx_alloc failed\n");
|
|
goto error;
|
|
}
|
|
|
|
hwframe_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
|
|
hwframe_ctx->format = AV_PIX_FMT_CUDA;
|
|
|
|
return 0;
|
|
|
|
error:
|
|
av_buffer_unref(&avctx->hw_frames_ctx);
|
|
av_buffer_unref(&hw_device_ctx);
|
|
return -1;
|
|
}
|
|
|
|
static void uninit(struct lavc_ctx *ctx)
|
|
{
|
|
struct CUVIDContext *p = ctx->hwdec_priv;
|
|
if (!p)
|
|
return;
|
|
|
|
talloc_free(p);
|
|
ctx->hwdec_priv = NULL;
|
|
}
|
|
|
|
static struct mp_image *process_image(struct lavc_ctx *ctx, struct mp_image *img)
|
|
{
|
|
if (img->imgfmt == IMGFMT_CUDA)
|
|
img->params.hw_subfmt = IMGFMT_NV12;
|
|
return img;
|
|
}
|
|
|
|
const struct vd_lavc_hwdec mp_vd_lavc_cuda = {
|
|
.type = HWDEC_CUDA,
|
|
.image_format = IMGFMT_CUDA,
|
|
.lavc_suffix = "_cuvid",
|
|
.probe = probe,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.init_decoder = init_decoder,
|
|
.process_image = process_image,
|
|
};
|