29 #define OFFSET(x) offsetof(IDETContext, x) 30 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM 34 {
"prog_thres",
"set progressive threshold",
OFFSET(progressive_threshold),
AV_OPT_TYPE_FLOAT, {.dbl = 1.5}, -1, FLT_MAX, FLAGS },
35 {
"rep_thres",
"set repeat threshold",
OFFSET(repeat_threshold),
AV_OPT_TYPE_FLOAT, {.dbl = 3.0}, -1, FLT_MAX, FLAGS },
36 {
"half_life",
"half life of cumulative statistics",
OFFSET(half_life),
AV_OPT_TYPE_FLOAT, {.dbl = 0.0}, -1, INT_MAX, FLAGS },
37 {
"analyze_interlaced_flag",
"set number of frames to use to determine if the interlace flag is accurate",
OFFSET(analyze_interlaced_flag),
AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, FLAGS },
46 case TFF :
return "tff";
47 case BFF :
return "bff";
54 #define PRECISION 1048576 56 static uint64_t
uintpow(uint64_t
b,
unsigned int e)
67 uint64_t print_precision =
uintpow(10, digits);
71 snprintf(valuestr,
sizeof(valuestr),
"%"PRId64
".%0*"PRId64,
72 value / print_precision, digits, value % print_precision);
79 switch(repeated_field) {
93 int v = (*a++ + *c++) - 2 * *b++;
106 int v = (*a++ + *c++) - 2 * *b++;
117 int64_t
alpha[2]={0};
119 int64_t gamma[2]={0};
135 for (y = 2; y < h - 2; y++) {
139 alpha[ y &1] += idet->
filter_line(cur-refs, prev, cur+refs, w);
140 alpha[(y^1)&1] += idet->
filter_line(cur-refs, next, cur+refs, w);
141 delta += idet->
filter_line(cur-refs, cur, cur+refs, w);
142 gamma[(y^1)&1] += idet->
filter_line(cur , prev, cur , w);
172 if(idet->
history[i] == best_type) {
213 av_log(ctx,
AV_LOG_DEBUG,
"Repeated Field:%12s, Single frame:%12s, Multi frame:%12s\n",
254 if( picref->
width != link->
w 341 av_log(ctx, level,
"Repeated Fields: Neither:%6"PRId64
" Top:%6"PRId64
" Bottom:%6"PRId64
"\n",
346 av_log(ctx, level,
"Single frame detection: TFF:%6"PRId64
" BFF:%6"PRId64
" Progressive:%6"PRId64
" Undetermined:%6"PRId64
"\n",
352 av_log(ctx, level,
"Multi frame detection: TFF:%6"PRId64
" BFF:%6"PRId64
" Progressive:%6"PRId64
" Undetermined:%6"PRId64
"\n",
453 .priv_class = &idet_class,
in the bitstream is reported as 00b
static void filter(AVFilterContext *ctx)
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
static const char * type2str(Type type)
#define AV_PIX_FMT_YUV444P14
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
static int query_formats(AVFilterContext *ctx)
int h
agreed upon image height
static const AVFilterPad idet_inputs[]
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
#define AV_PIX_FMT_YUV420P12
int ff_idet_filter_line_c_16bit(const uint16_t *a, const uint16_t *b, const uint16_t *c, int w)
float interlace_threshold
const AVPixFmtDescriptor * csp
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
static const AVFilterPad idet_outputs[]
float progressive_threshold
const char * name
Pad name.
AVFilterLink ** inputs
array of pointers to input links
char * name
name of this filter instance
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)
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
GLsizei GLboolean const GLfloat * value
uint64_t decay_coefficient
static const AVOption idet_options[]
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
#define AVERROR_EOF
End of file.
AVDictionary * metadata
metadata.
#define AV_PIX_FMT_YUV444P16
int interlaced_frame
The content of the picture is interlaced.
#define AV_PIX_FMT_YUV422P12
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)
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
void ff_idet_init_x86(IDETContext *idet, int for_16b)
uint8_t history[HIST_SIZE]
int analyze_interlaced_flag
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
AVFILTER_DEFINE_CLASS(idet)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int(* ff_idet_filter_func)(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w)
void * priv
private data for use by the filter
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
static const char * rep2str(RepeatedField repeated_field)
#define AV_PIX_FMT_YUV444P10
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
#define AV_PIX_FMT_YUV422P9
int ff_idet_filter_line_c(const uint8_t *a, const uint8_t *b, const uint8_t *c, int w)
uint8_t nb_components
The number of components each pixel has, (1-4)
#define AV_PIX_FMT_GRAY16
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
uint64_t total_prestat[4]
AVFilterContext * src
source filter
#define AV_PIX_FMT_YUV444P9
ff_idet_filter_func filter_line
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
static const AVFilterPad outputs[]
int format
agreed upon media format
static av_cold void uninit(AVFilterContext *ctx)
#define AV_PIX_FMT_YUV420P16
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
#define AV_LOG_INFO
Standard information.
#define AV_PIX_FMT_YUV420P14
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 uint64_t uintpow(uint64_t b, unsigned int e)
static const int16_t alpha[]
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_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
#define AV_PIX_FMT_YUV420P10
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
const char * name
Filter name.
#define AV_PIX_FMT_YUV420P9
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
static enum AVPixelFormat pix_fmts[]
#define AV_PIX_FMT_YUV422P14
#define flags(name, subs,...)
#define AV_PIX_FMT_YUV422P10
static int request_frame(AVFilterLink *link)
#define AV_PIX_FMT_YUV444P12
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
common internal and external API header
uint64_t total_poststat[4]
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)
int analyze_interlaced_flag_done
int top_field_first
If the content is interlaced, is top field displayed first.
static int filter_frame(AVFilterLink *link, AVFrame *picref)
AVFilterContext * dst
dest filter
static av_cold int init(AVFilterContext *ctx)
int interlaced_flag_accuracy
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
int ff_request_frame(AVFilterLink *link)
Request an input frame from the filter at the other end of the link.
uint64_t total_repeats[3]
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 depth
Number of bits in the component.
AVPixelFormat
Pixel format.
static int av_dict_set_fxp(AVDictionary **pm, const char *key, uint64_t value, unsigned int digits, int flags)
#define AV_PIX_FMT_YUV422P16
#define AV_CEIL_RSHIFT(a, b)