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30 #define INPUT_CLEANSRC 1
71 #define OFFSET(x) offsetof(DecimateContext, x)
72 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
75 {
"cycle",
"set the number of frame from which one will be dropped",
OFFSET(cycle),
AV_OPT_TYPE_INT, {.i64 = 5}, 2, 25,
FLAGS },
78 {
"blockx",
"set the size of the x-axis blocks used during metric calculations",
OFFSET(blockx),
AV_OPT_TYPE_INT, {.i64 = 32}, 4, 1<<9,
FLAGS },
79 {
"blocky",
"set the size of the y-axis blocks used during metric calculations",
OFFSET(blocky),
AV_OPT_TYPE_INT, {.i64 = 32}, 4, 1<<9,
FLAGS },
80 {
"ppsrc",
"mark main input as a pre-processed input and activate clean source input stream",
OFFSET(ppsrc),
AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1,
FLAGS },
82 {
"mixed",
"set whether or not the input only partially contains content to be decimated",
OFFSET(mixed),
AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1,
FLAGS },
95 memset(bdiffs, 0, dm->
bdiffsize *
sizeof(*bdiffs));
97 for (plane = 0; plane < (dm->
chroma && f1->
data[2] ? 3 : 1); plane++) {
99 const int linesize1 = f1->
linesize[plane];
100 const int linesize2 = f2->
linesize[plane];
101 const uint8_t *f1p = f1->
data[plane];
102 const uint8_t *f2p = f2->
data[plane];
105 int hblockx = dm->
blockx / 2;
106 int hblocky = dm->
blocky / 2;
109 hblockx >>= dm->
hsub;
110 hblocky >>= dm->
vsub;
113 for (y = 0; y <
height; y++) {
114 int ydest = y / hblocky;
117 #define CALC_DIFF(nbits) do { \
118 for (x = 0; x < width; x += hblockx) { \
120 int m = FFMIN(width, x + hblockx); \
121 for (xl = x; xl < m; xl++) \
122 acc += abs(((const uint##nbits##_t *)f1p)[xl] - \
123 ((const uint##nbits##_t *)f2p)[xl]); \
124 bdiffs[ydest * dm->nxblocks + xdest] += acc; \
137 for (j = 0; j < dm->
nxblocks - 1; j++) {
141 + bdiffs[(
i + 1) * dm->
nxblocks + j + 1];
155 int scpos = -1, duppos = -1;
156 int drop = INT_MIN,
i, lowest = 0,
ret;
203 if (dm->
mixed && duppos < 0) {
206 drop = scpos >= 0 && duppos < 0 ? scpos : lowest;
216 i == scpos ?
" sc" :
"",
217 i == duppos ?
" dup" :
"",
218 i == lowest ?
" lowest" :
"",
219 i == drop ?
" [DROP]" :
"");
331 pad.
name =
"clean_src";
369 #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
370 #define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
371 #define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
396 max_value = (1 << dm->
depth) - 1;
417 if (!fps.
num || !fps.
den) {
419 "current rate of %d/%d is invalid\n", fps.
num, fps.
den);
461 .priv_class = &decimate_class,
AVPixelFormat
Pixel format.
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
int64_t start_pts
base for output timestamps
struct qitem * queue
window of cycle frames and the associated data diff
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
int64_t duration
Duration of the frame, in the same units as pts.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
#define AVERROR_EOF
End of file.
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
static enum AVPixelFormat pix_fmts[]
#define FILTER_PIXFMTS_ARRAY(array)
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
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
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 depth
Number of bits in the component.
#define AV_LOG_VERBOSE
Detailed information.
int vsub
chroma subsampling values
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
int got_frame[2]
frame request flag for each input stream
const char * name
Filter name.
A link between two filters.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
#define FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, filter)
Forward the status on an output link to all input links.
int ff_append_inpad(AVFilterContext *f, AVFilterPad *p)
Append a new input/output pad to the filter's list of such pads.
#define AV_PIX_FMT_GRAY16
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
static int activate(AVFilterContext *ctx)
static void calc_diffs(const DecimateContext *dm, struct qitem *q, const AVFrame *f1, const AVFrame *f2)
A filter pad used for either input or output.
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
void ff_inlink_request_frame(AVFilterLink *link)
Mark that a frame is wanted on the link.
#define AV_CEIL_RSHIFT(a, b)
AVRational sample_aspect_ratio
agreed upon sample aspect ratio
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable; if left to 0/0,...
static const AVOption decimate_options[]
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
#define AV_PIX_FMT_GRAY14
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
int64_t last_pts
last output timestamp
#define AV_PIX_FMT_GRAY10
int av_log_get_level(void)
Get the current log level.
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
#define AV_PIX_FMT_YUV440P10
uint32_t eof
bitmask for end of stream
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
size_t ff_inlink_queued_frames(AVFilterLink *link)
Get the number of frames available on the link.
int(* config_props)(AVFilterLink *link)
Link configuration callback.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_NOPTS_VALUE
Undefined timestamp value.
AVFilterContext * src
source filter
static av_cold void decimate_uninit(AVFilterContext *ctx)
AVFrame ** clean_src
frame queue for the clean source
#define i(width, name, range_min, range_max)
AVRational av_gcd_q(AVRational a, AVRational b, int max_den, AVRational def)
Return the best rational so that a and b are multiple of it.
int w
agreed upon image width
#define AV_TIME_BASE
Internal time base represented as integer.
#define av_malloc_array(a, b)
static av_cold int decimate_init(AVFilterContext *ctx)
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
const char * name
Pad name.
void * av_calloc(size_t nmemb, size_t size)
int h
agreed upon image height
#define FF_INLINK_IDX(link)
Find the index of a link.
AVFILTER_DEFINE_CLASS(decimate)
int fid
current frame id in the queue
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link.
static int config_output(AVFilterLink *outlink)
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
#define FILTER_OUTPUTS(array)
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
const AVFilter ff_vf_decimate
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
#define AV_PIX_FMT_YUV440P12
the definition of that something depends on the semantic of the filter The callback must examine the status of the filter s links and proceed accordingly The status of output links is stored in the status_in and status_out fields and tested by the ff_outlink_frame_wanted() function. If this function returns true
#define AV_PIX_FMT_GRAY12
int filled
1 if the queue is filled, 0 otherwise
AVFrame * last
last frame from the previous queue
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
static const AVFilterPad decimate_outputs[]
void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
Mark a filter ready and schedule it for activation.
int64_t last_duration
last output duration