mirror of
https://github.com/mpv-player/mpv
synced 2024-12-28 18:12:22 +00:00
131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/*
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* This file is part of mpv.
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*
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* Copyright (c) 2016 Philip Langdale <philipl@overt.org>
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libavutil/hwcontext.h>
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#include <libavutil/hwcontext_cuda.h>
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#include "common/av_common.h"
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#include "video/decode/lavc.h"
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typedef struct CUVIDContext {
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CUcontext cuda_ctx;
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} CUVIDContext;
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static void cuvid_ctx_free(AVHWDeviceContext *ctx)
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{
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AVCUDADeviceContext *hwctx = ctx->hwctx;
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cuCtxDestroy(hwctx->cuda_ctx);
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}
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static int probe(struct lavc_ctx *ctx, struct vd_lavc_hwdec *hwdec,
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const char *codec)
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{
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if (!hwdec_devices_load(ctx->hwdec_devs, HWDEC_CUDA))
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return HWDEC_ERR_NO_CTX;
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return 0;
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}
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static int init(struct lavc_ctx *ctx)
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{
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struct CUVIDContext *p = talloc_ptrtype(NULL, p);
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*p = (struct CUVIDContext) {
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.cuda_ctx = hwdec_devices_get(ctx->hwdec_devs, HWDEC_CUDA)->ctx,
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};
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ctx->hwdec_priv = p;
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return 0;
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}
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static int init_decoder(struct lavc_ctx *ctx, int w, int h)
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{
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AVCodecContext *avctx = ctx->avctx;
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AVCUDADeviceContext *device_hwctx;
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AVHWDeviceContext *device_ctx;
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AVHWFramesContext *hwframe_ctx;
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CUVIDContext *priv = ctx->hwdec_priv;
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int ret = 0;
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if (avctx->hw_frames_ctx) {
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MP_ERR(ctx, "hw_frames_ctx already initialised!\n");
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return -1;
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}
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AVBufferRef *hw_device_ctx = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);
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if (!hw_device_ctx) {
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MP_WARN(ctx, "av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA) failed\n");
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goto error;
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}
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device_ctx = (AVHWDeviceContext*)hw_device_ctx->data;
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device_ctx->free = cuvid_ctx_free;
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device_hwctx = device_ctx->hwctx;
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device_hwctx->cuda_ctx = priv->cuda_ctx;
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ret = av_hwdevice_ctx_init(hw_device_ctx);
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if (ret < 0) {
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MP_ERR(ctx, "av_hwdevice_ctx_init failed\n");
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goto error;
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}
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avctx->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
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if (!avctx->hw_frames_ctx) {
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MP_ERR(ctx, "av_hwframe_ctx_alloc failed\n");
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goto error;
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}
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hwframe_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
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hwframe_ctx->format = AV_PIX_FMT_CUDA;
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return 0;
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error:
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av_buffer_unref(&avctx->hw_frames_ctx);
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av_buffer_unref(&hw_device_ctx);
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return -1;
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}
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static void uninit(struct lavc_ctx *ctx)
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{
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struct CUVIDContext *p = ctx->hwdec_priv;
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if (!p)
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return;
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talloc_free(p);
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ctx->hwdec_priv = NULL;
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}
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static struct mp_image *process_image(struct lavc_ctx *ctx, struct mp_image *img)
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{
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if (img->imgfmt == IMGFMT_CUDA)
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img->params.hw_subfmt = IMGFMT_NV12;
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return img;
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}
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const struct vd_lavc_hwdec mp_vd_lavc_cuda = {
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.type = HWDEC_CUDA,
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.image_format = IMGFMT_CUDA,
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.lavc_suffix = "_cuvid",
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.probe = probe,
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.init = init,
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.uninit = uninit,
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.init_decoder = init_decoder,
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.process_image = process_image,
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};
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