This is a newer API that is intended for decoders like the cuvid wrapper. Until now, the wrapper required to set an awkward "incomplete" hw_frames_ctx to set the device. Now the device can be set directly, and the user can get AV_PIX_FMT_CUDA output for a specific device simply by setting hw_device_ctx. This still does a dummy ff_get_format() call at init time, and should be fully backward compatible.
Showing the changes to libavcodec (2 of 3 files). Show all
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| @@ -802,9 +802,17 @@ static av_cold int cuvid_decode_init(AVCodecContext *avctx) · 801 unmodified lines | ||
| 802 | 802 | goto error; |
| 803 | 803 | } |
| 804 | 804 | } else { |
| 805 | − ret = av_hwdevice_ctx_create(&ctx->hwdevice, AV_HWDEVICE_TYPE_CUDA, ctx->cu_gpu, NULL, 0); | |
| 806 | − if (ret < 0) | |
| 807 | − goto error; | |
| 805 | + if (avctx->hw_device_ctx) { | |
| 806 | + ctx->hwdevice = av_buffer_ref(avctx->hw_device_ctx); | |
| 807 | + if (!ctx->hwdevice) { | |
| 808 | + ret = AVERROR(ENOMEM); | |
| 809 | + goto error; | |
| 810 | + } | |
| 811 | + } else { | |
| 812 | + ret = av_hwdevice_ctx_create(&ctx->hwdevice, AV_HWDEVICE_TYPE_CUDA, ctx->cu_gpu, NULL, 0); | |
| 813 | + if (ret < 0) | |
| 814 | + goto error; | |
| 815 | + } | |
| 808 | 816 | |
| 809 | 817 | ctx->hwframe = av_hwframe_ctx_alloc(ctx->hwdevice); |
| 810 | 818 | if (!ctx->hwframe) { |
| @@ -28,7 +28,7 @@ · 27 unmodified lines | ||
| 28 | 28 | #include "libavutil/version.h" |
| 29 | 29 | |
| 30 | 30 | #define LIBAVCODEC_VERSION_MAJOR 57 |
| 31 | −#define LIBAVCODEC_VERSION_MINOR 93 | |
| 31 | +#define LIBAVCODEC_VERSION_MINOR 94 | |
| 32 | 32 | #define LIBAVCODEC_VERSION_MICRO 100 |
| 33 | 33 | |
| 34 | 34 | #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ |