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Code Issues Releases Activity

hwcontext_cuda: implement device creation

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This commit is contained in:
Anton Khirnov 2016-05-19 19:19:20 +02:00
parent 38392b2af8
commit 2e219b491b
1 changed files with 44 additions and 0 deletions
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44
libavutil/hwcontext_cuda.c
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@ -253,6 +253,49 @@ static int cuda_transfer_data_to(AVHWFramesContext *ctx, AVFrame *dst,
return 0;
}
static void cuda_device_free(AVHWDeviceContext *ctx)
{
AVCUDADeviceContext *hwctx = ctx->hwctx;
cuCtxDestroy(hwctx->cuda_ctx);
}
static int cuda_device_create(AVHWDeviceContext *ctx, const char *device,
AVDictionary *opts, int flags)
{
AVCUDADeviceContext *hwctx = ctx->hwctx;
CUdevice cu_device;
CUcontext dummy;
CUresult err;
int device_idx = 0;
if (device)
device_idx = strtol(device, NULL, 0);
err = cuInit(0);
if (err != CUDA_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Could not initialize the CUDA driver API\n");
return AVERROR_UNKNOWN;
}
err = cuDeviceGet(&cu_device, device_idx);
if (err != CUDA_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Could not get the device number %d\n", device_idx);
return AVERROR_UNKNOWN;
}
err = cuCtxCreate(&hwctx->cuda_ctx, 0, cu_device);
if (err != CUDA_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Error creating a CUDA context\n");
return AVERROR_UNKNOWN;
}
cuCtxPopCurrent(&dummy);
ctx->free = cuda_device_free;
return 0;
}
const HWContextType ff_hwcontext_type_cuda = {
.type = AV_HWDEVICE_TYPE_CUDA,
.name = "CUDA",
@ -260,6 +303,7 @@ const HWContextType ff_hwcontext_type_cuda = {
.device_hwctx_size = sizeof(AVCUDADeviceContext),
.frames_priv_size = sizeof(CUDAFramesContext),
.device_create = cuda_device_create,
.frames_init = cuda_frames_init,
.frames_get_buffer = cuda_get_buffer,
.transfer_get_formats = cuda_transfer_get_formats,