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