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61 int err, device_is_derived;
70 device_is_derived = 0;
72 if (
inlink->hw_frames_ctx) {
75 if (
ctx->derive_device_type) {
89 "device context: %d.\n", err);
92 device_is_derived = 1;
109 "required to map to a hardware format.\n");
121 "frames context: %d.\n", err);
136 if (!
ctx->hwframes_ref) {
153 "target frames context: %d.\n", err);
164 "derived source frames context: %d.\n", err);
184 if (!
ctx->hwframes_ref) {
193 "hwmap: from %s (%s) to %s.\n",
208 "required to create new frames with reverse "
217 if (!
ctx->hwframes_ref) {
234 "context for reverse mapping: %d.\n", err);
240 "context (a device, or frames on input).\n");
253 if (device_is_derived)
258 if (device_is_derived)
270 if (
ctx->reverse && !
inlink->hw_frames_ctx) {
277 "frame for software mapping.\n");
290 "software: %d.\n", err);
323 if (!
map->hw_frames_ctx) {
328 if (
ctx->reverse && !
input->hw_frames_ctx) {
333 if (!
input->hw_frames_ctx) {
370 #define OFFSET(x) offsetof(HWMapContext, x)
371 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
373 {
"mode",
"Frame mapping mode",
376 0, INT_MAX,
FLAGS,
"mode" },
378 {
"read",
"Mapping should be readable",
380 INT_MIN, INT_MAX,
FLAGS,
"mode" },
381 {
"write",
"Mapping should be writeable",
383 INT_MIN, INT_MAX,
FLAGS,
"mode" },
384 {
"overwrite",
"Mapping will always overwrite the entire frame",
386 INT_MIN, INT_MAX,
FLAGS,
"mode" },
387 {
"direct",
"Mapping should not involve any copying",
389 INT_MIN, INT_MAX,
FLAGS,
"mode" },
391 {
"derive_device",
"Derive a new device of this type",
394 {
"reverse",
"Map in reverse (create and allocate in the sink)",
396 { .i64 = 0 }, 0, 1,
FLAGS },
427 .priv_class = &hwmap_class,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
char * derive_device_type
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
static const AVOption hwmap_options[]
#define FF_FILTER_FLAG_HWFRAME_AWARE
The filter is aware of hardware frames, and any hardware frame context should not be automatically pr...
@ AV_HWFRAME_MAP_WRITE
The mapping must be writeable.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
AVFilterFormats * in_formats
Lists of formats and channel layouts supported by the input and output filters respectively.
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
This structure describes decoded (raw) audio or video data.
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
int av_hwframe_map(AVFrame *dst, const AVFrame *src, int flags)
Map a hardware frame.
AVBufferRef * hwframes_ref
enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name)
Look up an AVHWDeviceType by name.
AVBufferRef * hw_device_ctx
For filters which will create hardware frames, sets the device the filter should create them in.
static const AVFilterPad hwmap_outputs[]
const char * name
Filter name.
int width
The allocated dimensions of the frames in this pool.
static uint32_t reverse(uint32_t num, int bits)
A link between two filters.
AVFrame * ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
void * priv
private data for use by the filter
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
if it could not because there are no more frames
int extra_hw_frames
Sets the number of extra hardware frames which the filter will allocate on its output links for use i...
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
A filter pad used for either input or output.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
static av_cold void hwmap_uninit(AVFilterContext *avctx)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static const AVFilterPad outputs[]
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
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
Describe the class of an AVClass context structure.
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.
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
AVBufferRef * device_ref
A reference to the parent AVHWDeviceContext.
AVFilterLink ** inputs
array of pointers to input links
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
int av_hwframe_ctx_create_derived(AVBufferRef **derived_frame_ctx, enum AVPixelFormat format, AVBufferRef *derived_device_ctx, AVBufferRef *source_frame_ctx, int flags)
Create and initialise an AVHWFramesContext as a mapping of another existing AVHWFramesContext on a di...
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 the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a source
@ AV_HWFRAME_MAP_DIRECT
The mapping must be direct.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
int format
agreed upon media format
AVFilterContext * src
source filter
AVFilterFormats * out_formats
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some input
AVFILTER_DEFINE_CLASS(hwmap)
static int hwmap_query_formats(AVFilterContext *avctx)
int av_hwdevice_ctx_create_derived(AVBufferRef **dst_ref_ptr, enum AVHWDeviceType type, AVBufferRef *src_ref, int flags)
Create a new device of the specified type from an existing device.
int w
agreed upon image width
AVBufferRef * hw_frames_ctx
For hwaccel pixel formats, this should be a reference to the AVHWFramesContext describing the frames.
const char * name
Pad name.
This struct describes a set or pool of "hardware" frames (i.e.
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
@ AV_HWFRAME_MAP_READ
The mapping must be readable.
int h
agreed upon image height
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
int initial_pool_size
Initial size of the frame pool.
static int hwmap_filter_frame(AVFilterLink *link, AVFrame *input)
A reference to a data buffer.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
const VDPAUPixFmtMap * map
@ AV_HWFRAME_MAP_OVERWRITE
The mapped frame will be overwritten completely in subsequent operations, so the current frame data n...
static int query_formats(AVFilterContext *ctx)
static int hwmap_config_output(AVFilterLink *outlink)
static const AVFilterPad hwmap_inputs[]
static AVFrame * hwmap_get_buffer(AVFilterLink *inlink, int w, int h)
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
AVFilterLink ** outputs
array of pointers to output links