Copied and modified from hwcontext_qsv.c.
---
libavutil/hwcontext_cuda.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/libavutil/hwcontext_cuda.c b/libavutil/hwcontext_cuda.c
index 260783426a..fc9b8b4298 100644
--- a/libavutil/hwcontext_cuda.c
+++ b/libavutil/hwcontext_cuda.c
@@ -37,6 +37,31 @@ static const enum AVPixelFormat supported_formats[] = {
AV_PIX_FMT_YUV444P16,
};
+static int cuda_frames_get_constraints(AVHWDeviceContext *ctx,
+ const void *hwconfig,
+ AVHWFramesConstraints *constraints)
+{
+ int i;
+
+ constraints->valid_sw_formats =
av_malloc_array(FF_ARRAY_ELEMS(supported_formats) + 1,
+
sizeof(*constraints->valid_sw_formats));
+ if (!constraints->valid_sw_formats)
+ return AVERROR(ENOMEM);
+
+ for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
+ constraints->valid_sw_formats[i] = supported_formats[i];
+ constraints->valid_sw_formats[FF_ARRAY_ELEMS(supported_formats)] =
AV_PIX_FMT_NONE;
+
+ constraints->valid_hw_formats = av_malloc_array(2,
sizeof(*constraints->valid_hw_formats));
+ if (!constraints->valid_hw_formats)
+ return AVERROR(ENOMEM);
+
+ constraints->valid_hw_formats[0] = AV_PIX_FMT_CUDA;
+ constraints->valid_hw_formats[1] = AV_PIX_FMT_NONE;
+
+ return 0;
+}
+
static void cuda_buffer_free(void *opaque, uint8_t *data)
{
AVHWFramesContext *ctx = opaque;
@@ -326,6 +351,7 @@ const HWContextType ff_hwcontext_type_cuda = {
.frames_priv_size = sizeof(CUDAFramesContext),
.device_create = cuda_device_create,
+ .frames_get_constraints = cuda_frames_get_constraints,
.frames_init = cuda_frames_init,
.frames_get_buffer = cuda_get_buffer,
.transfer_get_formats = cuda_transfer_get_formats,
--
2.11.0
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