51 yadif->
filter(ctx, yadif->
out, tff ^ !is_second, tff);
54 int64_t cur_pts = yadif->
cur->
pts;
55 int64_t next_pts = yadif->
next->
pts;
58 yadif->
out->
pts = cur_pts + next_pts;
186 }
else if (ret < 0) {
193 #define OFFSET(x) offsetof(YADIFContext, x) 194 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM 196 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit }
This structure describes decoded (raw) audio or video data.
int h
agreed upon image height
void(* filter)(AVFilterContext *ctx, AVFrame *dstpic, int parity, int tff)
int repeat_pict
When decoding, this signals how much the picture must be delayed.
send 1 frame for each frame but skips spatial interlacing check
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
int is_disabled
the enabled state from the last expression evaluation
int current_field
YADIFCurrentField.
AVFilterLink ** inputs
array of pointers to input links
#define av_assert0(cond)
assert() equivalent, that is always enabled.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
#define AVERROR_EOF
End of file.
#define AV_LOG_VERBOSE
Detailed information.
int interlaced_frame
The content of the picture is interlaced.
send 1 frame for each field
int ff_yadif_filter_frame(AVFilterLink *link, AVFrame *frame)
A link between two filters.
#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.
void * priv
private data for use by the filter
simple assert() macros that are a bit more flexible than ISO C assert().
static int return_frame(AVFilterContext *ctx, int is_second)
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
int w
agreed upon image width
uint8_t nb_components
The number of components each pixel has, (1-4)
static void fixstride(AVFilterLink *link, AVFrame *f)
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 it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
AVFilterContext * src
source filter
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
#define CONST(name, help, val, unit)
static int checkstride(YADIFContext *yadif, const AVFrame *a, const AVFrame *b)
The first or last field in a sequence.
send 1 frame for each field but skips spatial interlacing check
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
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
int ff_yadif_request_frame(AVFilterLink *link)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
AVFrame * ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
const AVPixFmtDescriptor * csp
int top_field_first
If the content is interlaced, is top field displayed first.
AVFilterContext * dst
dest filter
send 1 frame for each frame
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
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
only deinterlace frames marked as interlaced
The last frame in a sequence.
mode
Use these values in ebur128_init (or'ed).
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
#define AV_NOPTS_VALUE
Undefined timestamp value.
const AVOption ff_yadif_options[]