39 #define SAT_MIN_VAL -10 40 #define SAT_MAX_VAL 10 88 #define OFFSET(x) offsetof(HueContext, x) 89 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM 94 { .str =
"1" }, .flags =
FLAGS },
98 { .str =
"0" }, .flags =
FLAGS },
120 for (i = 0; i < 256; i++) {
121 h->
lut_l[
i] = av_clip_uint8(i + b * 25.5);
123 for (i = 0; i < 65536; i++) {
124 h->
lut_l16[
i] = av_clip_uintp2(i + b * 102.4, 10);
137 for (i = 0; i < 256; i++) {
138 for (j = 0; j < 256; j++) {
149 new_u = ((c *
u) - (s * v) + (1 << 15) + (128 << 16)) >> 16;
150 new_v = ((s *
u) + (c * v) + (1 << 15) + (128 << 16)) >> 16;
153 h->
lut_u[
i][j] = av_clip_uint8(new_u);
154 h->
lut_v[
i][j] = av_clip_uint8(new_v);
157 for (i = 0; i < 1024; i++) {
158 for (j = 0; j < 1024; j++) {
168 new_u = ((c *
u) - (s * v) + (1 << 15) + (512 << 16)) >> 16;
169 new_v = ((s *
u) + (c * v) + (1 << 15) + (512 << 16)) >> 16;
172 h->
lut_u10[
i][j] = av_clip_uintp2(new_u, 10);
173 h->
lut_v10[
i][j] = av_clip_uintp2(new_v, 10);
179 const char *expr,
const char *
option,
void *log_ctx)
192 "Error when evaluating the expression '%s' for %s\n",
200 *pexpr_ptr = new_pexpr;
202 *expr_ptr = new_expr;
214 "H and h options are incompatible and cannot be specified " 215 "at the same time\n");
219 #define SET_EXPR(expr, option) \ 220 if (hue->expr##_expr) do { \ 221 ret = set_expr(&hue->expr##_pexpr, &hue->expr##_expr, \ 222 hue->expr##_expr, option, ctx); \ 233 "H_expr:%s h_deg_expr:%s s_expr:%s b_expr:%s\n",
289 uint8_t *ldst,
const int dst_linesize,
290 uint8_t *lsrc,
const int src_linesize,
296 for (i = 0; i <
w; i++)
297 ldst[i] = s->
lut_l[lsrc[i]];
299 lsrc += src_linesize;
300 ldst += dst_linesize;
305 uint16_t *ldst,
const int dst_linesize,
306 uint16_t *lsrc,
const int src_linesize,
312 for (i = 0; i <
w; i++)
315 lsrc += src_linesize;
316 ldst += dst_linesize;
328 for (i = 0; i <
w; i++) {
329 const int u = usrc[
i];
330 const int v = vsrc[
i];
336 usrc += src_linesize;
337 vsrc += src_linesize;
338 udst += dst_linesize;
339 vdst += dst_linesize;
344 uint16_t *udst, uint16_t *vdst,
const int dst_linesize,
345 uint16_t *usrc, uint16_t *vsrc,
const int src_linesize,
351 for (i = 0; i <
w; i++) {
352 const int u = av_clip_uintp2(usrc[i], 10);
353 const int v = av_clip_uintp2(vsrc[i], 10);
359 usrc += src_linesize;
360 vsrc += src_linesize;
361 udst += dst_linesize;
362 vdst += dst_linesize;
399 "Saturation value not in range [%d,%d]: clipping value to %0.1f\n",
410 "Brightness value not in range [%d,%d]: clipping value to %0.1f\n",
424 "H:%0.1f*PI h:%0.1f s:%0.1f b:%0.f t:%0.1f n:%d\n",
439 inlink->
w * bps, inlink->
h);
443 inlink->
w * bps, inlink->
h);
448 (uint16_t*) inpic->
data[1], (uint16_t*) inpic->
data[2], inpic->
linesize[1]/2,
453 (uint16_t*) inpic->
data[0], inpic->
linesize[0]/2, inlink->
w, inlink->
h);
472 char *res,
int res_len,
int flags)
477 #define SET_EXPR(expr, option) \ 479 ret = set_expr(&hue->expr##_pexpr, &hue->expr##_expr, \ 480 args, option, ctx); \ 485 if (!strcmp(cmd,
"h")) {
488 }
else if (!strcmp(cmd,
"H")) {
491 }
else if (!strcmp(cmd,
"s")) {
493 }
else if (!strcmp(cmd,
"b")) {
529 .priv_class = &hue_class,
#define AV_PIX_FMT_YUV440P10
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
double var_values[VAR_NB]
#define AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA422P10
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
#define AV_LOG_WARNING
Something somehow does not look correct.
Main libavfilter public API header.
int h
agreed upon image height
static int query_formats(AVFilterContext *ctx)
static void create_chrominance_lut(HueContext *h, const int32_t c, const int32_t s)
static const AVFilterPad hue_inputs[]
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
#define SET_EXPR(expr, option)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
const char * name
Pad name.
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.
static void compute_sin_and_cos(HueContext *hue)
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
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
#define u(width, name, range_min, range_max)
static double av_q2d(AVRational a)
Convert an AVRational to a double.
#define AV_LOG_VERBOSE
Detailed information.
static void apply_luma_lut10(HueContext *s, uint16_t *ldst, const int dst_linesize, uint16_t *lsrc, const int src_linesize, int w, int h)
static void create_luma_lut(HueContext *h)
A filter pad used for either input or output.
A link between two filters.
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
AVRational frame_rate
Frame rate of the stream on the link, or 1/0 if unknown or variable; if left to 0/0, will be automatically copied from the first input of the source filter if it exists.
static av_cold int init(AVFilterContext *ctx)
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. ...
void * priv
private data for use by the filter
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
AVExpr * saturation_pexpr
static void direct(const float *in, const FFTComplex *ir, int len, float *out)
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link...
#define AV_PIX_FMT_YUV444P10
static void apply_lut10(HueContext *s, uint16_t *udst, uint16_t *vdst, const int dst_linesize, uint16_t *usrc, uint16_t *vsrc, const int src_linesize, int w, int h)
AVExpr * brightness_pexpr
static int filter_frame(AVFilterLink *inlink, AVFrame *inpic)
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
static void apply_lut(HueContext *s, uint8_t *udst, uint8_t *vdst, const int dst_linesize, uint8_t *usrc, uint8_t *vsrc, const int src_linesize, int w, int h)
#define AV_PIX_FMT_YUVA444P10
AVFILTER_DEFINE_CLASS(hue)
static const AVFilterPad outputs[]
int format
agreed upon media format
uint16_t lut_v10[1024][1024]
char * av_strdup(const char *s)
Duplicate a string.
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
static av_cold void uninit(AVFilterContext *ctx)
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
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)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
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
#define AV_PIX_FMT_YUV420P10
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Describe the class of an AVClass context structure.
static int set_expr(AVExpr **pexpr_ptr, char **expr_ptr, const char *expr, const char *option, void *log_ctx)
const char * name
Filter name.
static const AVOption hue_options[]
static const AVFilterPad hue_outputs[]
AVFilterLink ** outputs
array of pointers to output links
static enum AVPixelFormat pix_fmts[]
#define flags(name, subs,...)
#define AV_PIX_FMT_YUV422P10
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)
static void apply_luma_lut(HueContext *s, uint8_t *ldst, const int dst_linesize, uint8_t *lsrc, const int src_linesize, int w, int h)
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
AVFilterContext * dst
dest filter
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
uint16_t lut_u10[1024][1024]
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
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
static int config_props(AVFilterLink *inlink)
int depth
Number of bits in the component.
AVPixelFormat
Pixel format.
static const char *const var_names[]
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
simple arithmetic expression evaluator
#define AV_CEIL_RSHIFT(a, b)