49 #define OFFSET(x) offsetof(MEContext, x) 50 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM 51 #define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit } 103 for (i = 0; i < 3; i++) {
115 int x,
int y,
int x_mv,
int y_mv,
int dir)
119 mv->
dst_x = x + (mb_size >> 1);
120 mv->
dst_y = y + (mb_size >> 1);
121 mv->
src_x = x_mv + (mb_size >> 1);
122 mv->
src_y = y_mv + (mb_size >> 1);
123 mv->
source = dir ? 1 : -1;
127 #define SEARCH_MV(method)\ 129 for (mb_y = 0; mb_y < s->b_height; mb_y++)\ 130 for (mb_x = 0; mb_x < s->b_width; mb_x++) {\ 131 const int x_mb = mb_x << s->log2_mb_size;\ 132 const int y_mb = mb_y << s->log2_mb_size;\ 133 int mv[2] = {x_mb, y_mb};\ 134 ff_me_search_##method(me_ctx, x_mb, y_mb, mv);\ 135 add_mv_data(((AVMotionVector *) sd->data) + mv_count++, me_ctx->mb_size, x_mb, y_mb, mv[0], mv[1], dir);\ 139 #define ADD_PRED(preds, px, py)\ 141 preds.mvs[preds.nb][0] = px;\ 142 preds.mvs[preds.nb][1] = py;\ 192 for (dir = 0; dir < 2; dir++) {
210 for (mb_y = 0; mb_y < s->
b_height; mb_y++)
211 for (mb_x = 0; mb_x < s->
b_width; mb_x++) {
212 const int mb_i = mb_x + mb_y * s->
b_width;
215 int mv[2] = {x_mb, y_mb};
239 if (preds[0].nb == 4) {
240 me_ctx->
pred_x =
mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
241 me_ctx->
pred_y =
mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
242 }
else if (preds[0].nb == 3) {
243 me_ctx->
pred_x =
mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
244 me_ctx->
pred_y =
mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
245 }
else if (preds[0].nb == 2) {
255 s->
mv_table[0][mb_i][dir][0] = mv[0] - x_mb;
256 s->
mv_table[0][mb_i][dir][1] = mv[1] - y_mb;
262 for (mb_y = 0; mb_y < s->
b_height; mb_y++)
263 for (mb_x = 0; mb_x < s->
b_width; mb_x++) {
264 const int mb_i = mb_x + mb_y * s->
b_width;
267 int mv[2] = {x_mb, y_mb};
284 if (mb_y > 0 && mb_x + 1 < s->
b_width)
288 if (preds[0].nb == 4) {
289 me_ctx->
pred_x =
mid_pred(preds[0].mvs[1][0], preds[0].mvs[2][0], preds[0].mvs[3][0]);
290 me_ctx->
pred_y =
mid_pred(preds[0].mvs[1][1], preds[0].mvs[2][1], preds[0].mvs[3][1]);
291 }
else if (preds[0].nb == 3) {
292 me_ctx->
pred_x =
mid_pred(0, preds[0].mvs[1][0], preds[0].mvs[2][0]);
293 me_ctx->
pred_y =
mid_pred(0, preds[0].mvs[1][1], preds[0].mvs[2][1]);
294 }
else if (preds[0].nb == 2) {
327 s->
mv_table[0][mb_i][dir][0] = mv[0] - x_mb;
328 s->
mv_table[0][mb_i][dir][1] = mv[1] - y_mb;
346 for (i = 0; i < 3; i++)
372 .priv_class = &mestimate_class,
375 .
inputs = mestimate_inputs,
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
int16_t src_x
Absolute source position.
Main libavfilter public API header.
int h
agreed upon image height
int pred_y
median predictor y
static int config_input(AVFilterLink *inlink)
#define AV_ME_METHOD_TDLS
Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<.com>
AVMotionEstPredictor preds[2]
const char * name
Pad name.
static void add_mv_data(AVMotionVector *mv, int mb_size, int x, int y, int x_mv, int y_mv, int dir)
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
#define AV_ME_METHOD_NTSS
int pred_x
median predictor x
int16_t dst_x
Absolute destination position.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
#define AV_ME_METHOD_EPZS
uint64_t ff_me_search_umh(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
Structure to hold side data for an AVFrame.
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
int32_t source
Where the current macroblock comes from; negative value when it comes from the past, positive value when it comes from the future.
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
AVFILTER_DEFINE_CLASS(mestimate)
#define CONST(name, help, val, unit)
#define AV_ME_METHOD_HEXBS
A filter pad used for either input or output.
A link between two filters.
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
int mb_size
macroblock size
#define SEARCH_MV(method)
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. ...
uint8_t w
Width and height of the block.
void * priv
private data for use by the filter
uint64_t ff_me_search_epzs(AVMotionEstContext *me_ctx, int x_mb, int y_mb, int *mv)
simple assert() macros that are a bit more flexible than ISO C assert().
int search_param
search parameter
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
static const AVFilterPad mestimate_inputs[]
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Motion vectors exported by some codecs (on demand through the export_mvs flag set in the libavcodec A...
int(*[3] mv_table)[2][2]
motion vectors of current & prev 2 frames
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
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
static const AVFilterPad outputs[]
static const int8_t mv[256][2]
#define ADD_PRED(preds, px, py)
void ff_me_init_context(AVMotionEstContext *me_ctx, int mb_size, int search_param, int width, int height, int x_min, int x_max, int y_min, int y_max)
int method
motion estimation method
static const AVOption mestimate_options[]
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
static av_cold void uninit(AVFilterContext *ctx)
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
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Describe the class of an AVClass context structure.
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
const char * name
Filter name.
AVFilterLink ** outputs
array of pointers to output links
static enum AVPixelFormat pix_fmts[]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
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
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
uint64_t flags
Extra flag information.
common internal and external API header
AVMotionEstContext me_ctx
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
#define AV_ME_METHOD_ESA
Copyright (c) 2016 Davinder Singh (DSM_) <ds.mudhar<.com>
static int query_formats(AVFilterContext *ctx)
AVFilterContext * dst
dest filter
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
static const AVFilterPad mestimate_outputs[]
static av_always_inline av_const int av_ceil_log2_c(int x)
Compute ceil(log2(x)).
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
AVPixelFormat
Pixel format.
#define AV_NOPTS_VALUE
Undefined timestamp value.
void * av_mallocz_array(size_t nmemb, size_t size)