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lavfi/opencl: Use filter device if no input device is available 

This allows implementing sources as well as filters.
This commit is contained in:
Mark Thompson 2018-01-02 23:12:57 +00:00
parent 6874945fbf
commit 202b59cd3d
1 changed files with 33 additions and 6 deletions
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39
libavfilter/opencl.c
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@ -42,11 +42,29 @@ int ff_opencl_filter_query_formats(AVFilterContext *avctx)
return ff_set_common_formats(avctx, formats);
}
static int opencl_filter_set_device(AVFilterContext *avctx,
AVBufferRef *device)
{
OpenCLFilterContext *ctx = avctx->priv;
av_buffer_unref(&ctx->device_ref);
ctx->device_ref = av_buffer_ref(device);
if (!ctx->device_ref)
return AVERROR(ENOMEM);
ctx->device = (AVHWDeviceContext*)ctx->device_ref->data;
ctx->hwctx = ctx->device->hwctx;
return 0;
}
int ff_opencl_filter_config_input(AVFilterLink *inlink)
{
AVFilterContext *avctx = inlink->dst;
OpenCLFilterContext *ctx = avctx->priv;
AVHWFramesContext *input_frames;
int err;
if (!inlink->hw_frames_ctx) {
av_log(avctx, AV_LOG_ERROR, "OpenCL filtering requires a "
@ -59,15 +77,12 @@ int ff_opencl_filter_config_input(AVFilterLink *inlink)
return 0;
input_frames = (AVHWFramesContext*)inlink->hw_frames_ctx->data;
if (input_frames->format != AV_PIX_FMT_OPENCL)
return AVERROR(EINVAL);
ctx->device_ref = av_buffer_ref(input_frames->device_ref);
if (!ctx->device_ref)
return AVERROR(ENOMEM);
ctx->device = input_frames->device_ctx;
ctx->hwctx = ctx->device->hwctx;
err = opencl_filter_set_device(avctx, input_frames->device_ref);
if (err < 0)
return err;
// Default output parameters match input parameters.
if (ctx->output_format == AV_PIX_FMT_NONE)
@ -90,6 +105,18 @@ int ff_opencl_filter_config_output(AVFilterLink *outlink)
av_buffer_unref(&outlink->hw_frames_ctx);
if (!ctx->device_ref) {
if (!avctx->hw_device_ctx) {
av_log(avctx, AV_LOG_ERROR, "OpenCL filtering requires an "
"OpenCL device.\n");
return AVERROR(EINVAL);
}
err = opencl_filter_set_device(avctx, avctx->hw_device_ctx);
if (err < 0)
return err;
}
output_frames_ref = av_hwframe_ctx_alloc(ctx->device_ref);
if (!output_frames_ref) {
err = AVERROR(ENOMEM);