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@ -17,138 +17,57 @@ |
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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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typedef struct CUVIDContext { |
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AVBufferRef *hw_frames_ctx; |
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} CUVIDContext; |
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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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CUVIDContext *ctx = ist->hwaccel_ctx; |
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if (ctx) { |
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av_buffer_unref(&ctx->hw_frames_ctx); |
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av_freep(&ctx); |
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} |
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av_buffer_unref(&ist->hw_frames_ctx); |
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ist->hwaccel_ctx = 0; |
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ist->hwaccel_uninit = 0; |
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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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CUVIDContext *ctx = ist->hwaccel_ctx; |
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av_log(NULL, AV_LOG_TRACE, "Initializing cuvid hwaccel\n"); |
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if (!ctx) { |
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av_log(NULL, AV_LOG_ERROR, "CUVID transcoding is not initialized. " |
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"-hwaccel cuvid should only be used for one-to-one CUVID transcoding " |
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"with no (software) filters.\n"); |
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return AVERROR(EINVAL); |
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} |
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return 0; |
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} |
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int cuvid_transcode_init(OutputStream *ost) |
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{ |
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InputStream *ist; |
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const enum AVPixelFormat *pix_fmt; |
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AVHWFramesContext *hwframe_ctx; |
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AVBufferRef *device_ref = NULL; |
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CUVIDContext *ctx = NULL; |
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int ret = 0; |
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av_log(NULL, AV_LOG_TRACE, "Initializing cuvid transcoding\n"); |
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if (ost->source_index < 0) |
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return 0; |
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ist = input_streams[ost->source_index]; |
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AVHWFramesContext *frames_ctx; |
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int ret; |
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/* check if the encoder supports CUVID */ |
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if (!ost->enc->pix_fmts) |
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goto cancel; |
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for (pix_fmt = ost->enc->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++) |
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if (*pix_fmt == AV_PIX_FMT_CUDA) |
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break; |
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if (*pix_fmt == AV_PIX_FMT_NONE) |
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goto cancel; |
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av_log(avctx, AV_LOG_VERBOSE, "Initializing cuvid hwaccel\n"); |
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/* check if the decoder supports CUVID */ |
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if (ist->hwaccel_id != HWACCEL_CUVID || !ist->dec || !ist->dec->pix_fmts) |
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goto cancel; |
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for (pix_fmt = ist->dec->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++) |
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if (*pix_fmt == AV_PIX_FMT_CUDA) |
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break; |
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if (*pix_fmt == AV_PIX_FMT_NONE) |
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goto cancel; |
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av_log(NULL, AV_LOG_VERBOSE, "Setting up CUVID transcoding\n"); |
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if (ist->hwaccel_ctx) { |
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ctx = ist->hwaccel_ctx; |
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} else { |
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ctx = av_mallocz(sizeof(*ctx)); |
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if (!ctx) { |
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ret = AVERROR(ENOMEM); |
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goto error; |
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} |
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} |
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if (!ctx->hw_frames_ctx) { |
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ret = av_hwdevice_ctx_create(&device_ref, AV_HWDEVICE_TYPE_CUDA, |
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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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goto error; |
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ctx->hw_frames_ctx = av_hwframe_ctx_alloc(device_ref); |
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if (!ctx->hw_frames_ctx) { |
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av_log(NULL, AV_LOG_ERROR, "av_hwframe_ctx_alloc failed\n"); |
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ret = AVERROR(ENOMEM); |
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goto error; |
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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(&device_ref); |
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ist->hw_frames_ctx = av_buffer_ref(ctx->hw_frames_ctx); |
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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(NULL, AV_LOG_ERROR, "av_buffer_ref failed\n"); |
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ret = AVERROR(ENOMEM); |
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goto error; |
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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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ist->hwaccel_ctx = ctx; |
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ist->hwaccel_uninit = cuvid_uninit; |
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frames_ctx = (AVHWFramesContext*)ist->hw_frames_ctx->data; |
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/* This is a bit hacky, av_hwframe_ctx_init is called by the cuvid decoder
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* once it has probed the necessary format information. But as filters/nvenc |
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* need to know the format/sw_format, set them here so they are happy. |
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* This is fine as long as CUVID doesn't add another supported pix_fmt. |
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*/ |
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hwframe_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data; |
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hwframe_ctx->format = AV_PIX_FMT_CUDA; |
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hwframe_ctx->sw_format = ist->st->codecpar->format == AV_PIX_FMT_YUV420P10 ? AV_PIX_FMT_P010 : AV_PIX_FMT_NV12; |
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} |
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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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return 0; |
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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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error: |
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av_freep(&ctx); |
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av_buffer_unref(&device_ref); |
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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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cancel: |
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if (ist->hwaccel_id == HWACCEL_CUVID) { |
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av_log(NULL, AV_LOG_ERROR, "CUVID hwaccel requested, but impossible to achieve.\n"); |
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return AVERROR(EINVAL); |
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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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