68 if (ctx->
blend > 0.0001) {
76 for (
int i = 0;
i < 4; ++
i) {
99 size_t global_work[2];
127 src = (cl_mem)input_frame->
data[0];
133 dst = (cl_mem)output_frame->
data[0];
139 if (colorkey_ctx->
blend > 0.0001) {
147 cle = clEnqueueNDRangeKernel(
187 if (cle != CL_SUCCESS)
189 "kernel: %d.\n", cle);
194 if (cle != CL_SUCCESS)
196 "command queue: %d.\n", cle);
221 #define OFFSET(x) offsetof(ColorkeyOpenCLContext, x) 222 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM 234 .
name =
"colorkey_opencl",
235 .description =
NULL_IF_CONFIG_SMALL(
"Turns a certain color into transparency. Operates on RGB colors."),
237 .priv_class = &colorkey_opencl_class,
241 .
inputs = colorkey_opencl_inputs,
242 .
outputs = colorkey_opencl_outputs,
#define FF_FILTER_FLAG_HWFRAME_AWARE
The filter is aware of hardware frames, and any hardware frame context should not be automatically pr...
cl_float4 colorkey_rgba_float
This structure describes decoded (raw) audio or video data.
int ff_opencl_filter_work_size_from_image(AVFilterContext *avctx, size_t *work_size, AVFrame *frame, int plane, int block_alignment)
Find the work size needed needed for a given plane of an image.
int ff_opencl_filter_config_input(AVFilterLink *inlink)
Check that the input link contains a suitable hardware frames context and extract the device from it...
int ff_opencl_filter_query_formats(AVFilterContext *avctx)
Return that all inputs and outputs support only AV_PIX_FMT_OPENCL.
cl_command_queue command_queue
Main libavfilter public API header.
static av_cold int init(AVCodecContext *avctx)
int h
agreed upon image height
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
static const AVFilterPad colorkey_opencl_inputs[]
int ff_opencl_filter_init(AVFilterContext *avctx)
Initialise an OpenCL filter context.
AVOpenCLDeviceContext * hwctx
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame...
const char * name
Pad name.
static const AVFilterPad colorkey_opencl_outputs[]
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
static av_cold void colorkey_opencl_uninit(AVFilterContext *avctx)
static av_cold int uninit(AVCodecContext *avctx)
cl_device_id device_id
The primary device ID of the device.
cl_kernel kernel_colorkey
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
int ff_opencl_filter_config_output(AVFilterLink *outlink)
Create a suitable hardware frames context for the output.
A filter pad used for either input or output.
A link between two filters.
const char * ff_opencl_source_colorkey
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
void * priv
private data for use by the filter
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
int w
agreed upon image width
AVFilter ff_vf_colorkey_opencl
static int filter_frame(AVFilterLink *link, AVFrame *input_frame)
static const AVFilterPad outputs[]
#define CL_SET_KERNEL_ARG(kernel, arg_num, type, arg)
set argument to specific Kernel.
uint8_t * data
The data buffer.
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
This struct describes a set or pool of "hardware" frames (i.e.
const char * name
Filter name.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a link
AVFilterLink ** outputs
array of pointers to output links
AVFILTER_DEFINE_CLASS(colorkey_opencl)
static const AVOption colorkey_opencl_options[]
#define CL_FAIL_ON_ERROR(errcode,...)
A helper macro to handle OpenCL errors.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int query_formats(AVFilterContext *ctx)
void ff_opencl_filter_uninit(AVFilterContext *avctx)
Uninitialise an OpenCL filter context.
AVFilterContext * dst
dest filter
cl_context context
The OpenCL context which will contain all operations and frames on this device.
static int colorkey_opencl_init(AVFilterContext *avctx)
int ff_opencl_filter_load_program(AVFilterContext *avctx, const char **program_source_array, int nb_strings)
Load a new OpenCL program from strings in memory.
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.