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54 int64_t cur_pts = yadif->
cur->
pts;
55 int64_t next_pts = yadif->
next->
pts;
58 yadif->
out->
pts = cur_pts + next_pts;
73 if (
a->linesize[
i] !=
b->linesize[
i])
85 (
const uint8_t **)
f->data,
f->linesize,
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 }
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
int ff_yadif_request_frame(AVFilterLink *link)
@ YADIF_MODE_SEND_FIELD
send 1 frame for each field
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
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
#define AVERROR_EOF
End of file.
const AVPixFmtDescriptor * csp
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
This structure describes decoded (raw) audio or video data.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
int top_field_first
If the content is interlaced, is top field displayed first.
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
#define AV_LOG_VERBOSE
Detailed information.
A link between two filters.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
@ YADIF_MODE_SEND_FRAME
send 1 frame for each frame
@ YADIF_MODE_SEND_FIELD_NOSPATIAL
send 1 frame for each field but skips spatial interlacing check
AVFrame * ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
@ YADIF_PARITY_AUTO
auto detection
@ YADIF_MODE_SEND_FRAME_NOSPATIAL
send 1 frame for each frame but skips spatial interlacing check
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
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
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
#define CONST(name, help, val, unit)
uint8_t nb_components
The number of components each pixel has, (1-4)
static int checkstride(YADIFContext *yadif, const AVFrame *a, const AVFrame *b)
#define AV_NOPTS_VALUE
Undefined timestamp value.
void(* filter)(AVFilterContext *ctx, AVFrame *dstpic, int parity, int tff)
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
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
static void fixstride(AVFilterLink *link, AVFrame *f)
int interlaced_frame
The content of the picture is interlaced.
#define i(width, name, range_min, range_max)
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
const AVOption ff_yadif_options[]
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
@ YADIF_DEINT_ALL
deinterlace all frames
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.
@ YADIF_FIELD_END
The first or last field in a sequence.
@ YADIF_DEINT_INTERLACED
only deinterlace frames marked as interlaced
@ YADIF_FIELD_BACK_END
The last frame in a sequence.
@ YADIF_PARITY_TFF
top field first
int current_field
YADIFCurrentField.
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
static int return_frame(AVFilterContext *ctx, int is_second)
int repeat_pict
When decoding, this signals how much the picture must be delayed.
int ff_yadif_filter_frame(AVFilterLink *link, AVFrame *frame)
@ YADIF_PARITY_BFF
bottom field first