40 double g = 1.0 / param->
gamma;
43 for (i = 0; i < 256; i++) {
55 param->
lut[i] = 256.0 * v;
70 for (y = 0; y <
h; y++) {
71 for (x = 0; x <
w; x++) {
72 dst[y * dst_stride + x] = param->
lut[src[y * src_stride + x]];
83 int brightness = ((
int) (100.0 * param->
brightness + 100.0) * 511) / 200 - 128 - contrast / 32;
85 for (y = 0; y <
h; y++) {
86 for (x = 0; x <
w; x++) {
87 pel = ((src[y * src_stride + x] * contrast) >> 12) + brightness;
92 dst[y * dst_stride + x] = pel;
137 for (i = 0; i < 3; i++) {
150 for (i = 1; i < 3; i++) {
167 "Error when parsing the expression '%s' for %s\n",
249 #define TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb)) 285 if (i == 1 || i == 2) {
307 if ((ret =
set_expr(pexpr, args, cmd, ctx)) < 0)
315 char *res,
int res_len,
int flags)
319 #define SET_PARAM(param_name, set_fn_name) \ 320 if (!strcmp(cmd, #param_name)) return set_param(&eq->param_name##_pexpr, args, cmd, set_##set_fn_name, ctx); 351 #define OFFSET(x) offsetof(EQContext, x) 352 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM 355 {
"contrast",
"set the contrast adjustment, negative values give a negative image",
357 {
"brightness",
"set the brightness adjustment",
359 {
"saturation",
"set the saturation adjustment",
361 {
"gamma",
"set the initial gamma value",
363 {
"gamma_r",
"gamma value for red",
365 {
"gamma_g",
"gamma value for green",
367 {
"gamma_b",
"gamma value for blue",
369 {
"gamma_weight",
"set the gamma weight which reduces the effect of gamma on bright areas",
383 .priv_class = &eq_class,
AVExpr * gamma_weight_pexpr
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
static void set_contrast(EQContext *eq)
int64_t pkt_pos
reordered pos from the last AVPacket that has been input into the decoder
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
static av_cold int init(AVCodecContext *avctx)
static int config_props(AVFilterLink *inlink)
int h
agreed upon image height
static void check_values(EQParameters *param, EQContext *eq)
static const AVOption eq_options[]
static void create_lut(EQParameters *param)
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.
static void uninit(AVFilterContext *ctx)
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
void(* adjust)(struct EQParameters *eq, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int w, int h)
double var_values[VAR_NB]
#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.
AVExpr * brightness_pexpr
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
static double av_q2d(AVRational a)
Convert an AVRational to a double.
av_cold void ff_eq_init_x86(EQContext *eq)
static const char *const var_names[]
static const AVFilterPad eq_outputs[]
A filter pad used for either input or output.
A link between two filters.
void(* process)(struct EQParameters *par, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int w, int h)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int query_formats(AVFilterContext *ctx)
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.
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
enum EQContext::EvalMode eval_mode
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link...
static void set_gamma(EQContext *eq)
static int set_expr(AVExpr **pexpr, const char *expr, const char *option, void *log_ctx)
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
uint8_t nb_components
The number of components each pixel has, (1-4)
const char AVS_Value args
static const AVFilterPad inputs[]
static int initialize(AVFilterContext *ctx)
static const AVFilterPad outputs[]
int format
agreed upon media format
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
static void process_c(EQParameters *param, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int w, int h)
#define SET_PARAM(param_name, set_fn_name)
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
static int set_param(AVExpr **pexpr, const char *args, const char *cmd, void(*set_fn)(EQContext *eq), AVFilterContext *ctx)
AVExpr * saturation_pexpr
const char * name
Filter name.
static void set_saturation(EQContext *eq)
AVFilterLink ** outputs
array of pointers to output links
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
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
AVFILTER_DEFINE_CLASS(eq)
static void apply_lut(EQParameters *param, uint8_t *dst, int dst_stride, const uint8_t *src, int src_stride, int w, int h)
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
AVFilterContext * dst
dest filter
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static void set_brightness(EQContext *eq)
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.
static const AVFilterPad eq_inputs[]
AVPixelFormat
Pixel format.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
#define AV_CEIL_RSHIFT(a, b)