49 #define OFFSET(x) offsetof(TPadContext, x)
50 #define VF AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
53 {
"start",
"set the number of frames to delay input",
OFFSET(pad_start),
AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX,
VF },
54 {
"stop",
"set the number of frames to add after input finished",
OFFSET(pad_stop),
AV_OPT_TYPE_INT, {.i64=0}, -1, INT_MAX,
VF },
55 {
"start_mode",
"set the mode of added frames to start",
OFFSET(start_mode),
AV_OPT_TYPE_INT, {.i64=0}, 0, 1,
VF,
"mode" },
58 {
"stop_mode",
"set the mode of added frames to end",
OFFSET(stop_mode),
AV_OPT_TYPE_INT, {.i64=0}, 0, 1,
VF,
"mode" },
96 if (
s->start_mode == 1 &&
s->pad_start > 0) {
99 }
else if (!
s->cache_start) {
108 if (
s->pad_start == 0)
109 s->cache_start =
NULL;
113 if (!
s->eof && !
s->pad_start) {
118 if (
s->stop_mode == 1 &&
s->pad_stop != 0) {
143 if (
s->stop_mode == 0) {
150 }
else if (
s->stop_mode == 1) {
176 if (
s->start_duration)
178 if (
s->stop_duration)
212 .priv_class = &tpad_class,
static const AVFilterPad inputs[]
static const AVFilterPad outputs[]
simple assert() macros that are a bit more flexible than ISO C assert().
AVFrame * ff_inlink_peek_frame(AVFilterLink *link, size_t idx)
Access a frame in the link fifo without consuming it.
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
size_t ff_inlink_queued_frames(AVFilterLink *link)
Get the number of frames available on the link.
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
Main libavfilter public API header.
audio channel layout utility functions
int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
Init a draw context.
void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4])
Prepare a color.
void ff_fill_rectangle(FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_x, int dst_y, int w, int h)
Fill a rectangle with an uniform color.
AVFilterFormats * ff_draw_supported_pixel_formats(unsigned flags)
Return the list of pixel formats supported by the draw functions.
#define FF_FILTER_FORWARD_WANTED(outlink, inlink)
Forward the frame_wanted_out flag from an output link to an input link.
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
#define FFERROR_NOT_READY
Filters implementation helper functions.
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
static int ff_outlink_frame_wanted(AVFilterLink *link)
Test if a frame is wanted on an output link.
#define AVERROR_EOF
End of file.
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Describe the class of an AVClass context structure.
A link between two filters.
int w
agreed upon image width
int h
agreed upon image height
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link.
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable; if left to 0/0,...
AVFilterContext * dst
dest filter
int format
agreed upon media format
A filter pad used for either input or output.
const char * name
Pad name.
const char * name
Filter name.
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).
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
uint8_t rgba_color[4]
color for the padding area
static const AVOption tpad_options[]
static int query_formats(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
static const AVFilterPad tpad_inputs[]
static int activate(AVFilterContext *ctx)
static av_cold void uninit(AVFilterContext *ctx)
AVFILTER_DEFINE_CLASS(tpad)
static const AVFilterPad tpad_outputs[]
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.