mirror of https://git.ffmpeg.org/ffmpeg.git
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 GNU
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* 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/hwcontext.h"
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#include "libavutil/pixdesc.h"
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#include "ffmpeg.h"
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static void cuvid_uninit(AVCodecContext *avctx)
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{
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InputStream *ist = avctx->opaque;
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av_buffer_unref(&ist->hw_frames_ctx);
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}
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int cuvid_init(AVCodecContext *avctx)
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{
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InputStream *ist = avctx->opaque;
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AVHWFramesContext *frames_ctx;
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int ret;
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av_log(avctx, AV_LOG_VERBOSE, "Initializing cuvid hwaccel\n");
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if (!hw_device_ctx) {
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ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_CUDA,
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ist->hwaccel_device, NULL, 0);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error creating a CUDA device\n");
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return ret;
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}
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}
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av_buffer_unref(&ist->hw_frames_ctx);
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ist->hw_frames_ctx = av_hwframe_ctx_alloc(hw_device_ctx);
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if (!ist->hw_frames_ctx) {
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av_log(avctx, AV_LOG_ERROR, "Error creating a CUDA frames context\n");
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return AVERROR(ENOMEM);
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}
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frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data;
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frames_ctx->format = AV_PIX_FMT_CUDA;
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frames_ctx->sw_format = avctx->sw_pix_fmt;
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frames_ctx->width = avctx->width;
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frames_ctx->height = avctx->height;
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av_log(avctx, AV_LOG_DEBUG, "Initializing CUDA frames context: sw_format = %s, width = %d, height = %d\n",
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av_get_pix_fmt_name(frames_ctx->sw_format), frames_ctx->width, frames_ctx->height);
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ret = av_hwframe_ctx_init(ist->hw_frames_ctx);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error initializing a CUDA frame pool\n");
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return ret;
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}
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ist->hwaccel_uninit = cuvid_uninit;
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return 0;
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}
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