Go to the documentation of this file.
42 #define LANCZOS_RESOLUTION 256
95 #define OFFSET(x) offsetof(LensfunContext, x)
96 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
109 {
"focal_length",
"focal length of video (zoom; constant for the duration of the use of this filter)",
OFFSET(focal_length),
AV_OPT_TYPE_FLOAT, {.dbl=18}, 0.0, DBL_MAX,
FLAGS },
110 {
"aperture",
"aperture (constant for the duration of the use of this filter)",
OFFSET(aperture),
AV_OPT_TYPE_FLOAT, {.dbl=3.5}, 0.0, DBL_MAX,
FLAGS },
111 {
"focus_distance",
"focus distance (constant for the duration of the use of this filter)",
OFFSET(focus_distance),
AV_OPT_TYPE_FLOAT, {.dbl=1000.0f}, 0.0, DBL_MAX,
FLAGS },
112 {
"scale",
"scale factor applied after corrections (0.0 means automatic scaling)",
OFFSET(scale),
AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, DBL_MAX,
FLAGS },
113 {
"target_geometry",
"target geometry of the lens correction (only when geometry correction is enabled)",
OFFSET(target_geometry),
AV_OPT_TYPE_INT, {.i64=LF_RECTILINEAR}, 0, INT_MAX,
FLAGS,
"lens_geometry" },
114 {
"rectilinear",
"rectilinear lens (default)", 0,
AV_OPT_TYPE_CONST, {.i64=LF_RECTILINEAR}, 0, 0,
FLAGS,
"lens_geometry" },
116 {
"panoramic",
"panoramic (cylindrical)", 0,
AV_OPT_TYPE_CONST, {.i64=LF_PANORAMIC}, 0, 0,
FLAGS,
"lens_geometry" },
117 {
"equirectangular",
"equirectangular", 0,
AV_OPT_TYPE_CONST, {.i64=LF_EQUIRECTANGULAR}, 0, 0,
FLAGS,
"lens_geometry" },
118 {
"fisheye_orthographic",
"orthographic fisheye", 0,
AV_OPT_TYPE_CONST, {.i64=LF_FISHEYE_ORTHOGRAPHIC}, 0, 0,
FLAGS,
"lens_geometry" },
119 {
"fisheye_stereographic",
"stereographic fisheye", 0,
AV_OPT_TYPE_CONST, {.i64=LF_FISHEYE_STEREOGRAPHIC}, 0, 0,
FLAGS,
"lens_geometry" },
120 {
"fisheye_equisolid",
"equisolid fisheye", 0,
AV_OPT_TYPE_CONST, {.i64=LF_FISHEYE_EQUISOLID}, 0, 0,
FLAGS,
"lens_geometry" },
121 {
"fisheye_thoby",
"fisheye as measured by thoby", 0,
AV_OPT_TYPE_CONST, {.i64=LF_FISHEYE_THOBY}, 0, 0,
FLAGS,
"lens_geometry" },
136 const lfCamera **cameras;
137 const lfLens **lenses;
139 if (!lensfun->
make) {
142 }
else if (!lensfun->
model) {
150 lensfun->
lens = lf_lens_new();
151 lensfun->
camera = lf_camera_new();
154 if (lf_db_load(db) != LF_NO_ERROR) {
160 cameras = lf_db_find_cameras(db, lensfun->
make, lensfun->
model);
161 if (cameras && *cameras) {
162 lf_camera_copy(lensfun->
camera, *cameras);
173 if (lenses && *lenses) {
174 lf_lens_copy(lensfun->
lens, *lenses);
200 }
else if (
x > -2.0
f &&
x < 2.0
f) {
213 int lensfun_mode = 0;
218 lensfun->
camera->CropFactor,
222 lensfun_mode |= LF_MODIFY_VIGNETTING;
224 lensfun_mode |= LF_MODIFY_DISTORTION | LF_MODIFY_GEOMETRY | LF_MODIFY_SCALE;
226 lensfun_mode |= LF_MODIFY_TCA;
227 lf_modifier_initialize(lensfun->
modifier,
250 lf_modifier_apply_subpixel_geometry_distortion(lensfun->
modifier,
256 lf_modifier_apply_subpixel_distortion(lensfun->
modifier,
266 lf_modifier_apply_geometry_distortion(lensfun->
modifier,
294 const int slice_start =
thread_data->height * jobnr / nb_jobs;
297 lf_modifier_apply_color_modification(
thread_data->modifier,
317 const int slice_start =
thread_data->height * jobnr / nb_jobs;
320 int x, y,
i, j, rgb_index;
321 float interpolated, new_x, new_y, d, norm;
322 int new_x_int, new_y_int;
323 for (y = slice_start; y <
slice_end; ++y)
325 for (rgb_index = 0; rgb_index < 3; ++rgb_index) {
331 new_y_int =
thread_data->distortion_coords[
x * 2 * 3 + y *
thread_data->width * 2 * 3 + rgb_index * 2 + 1] + 0.5f;
332 if (new_x_int < 0 || new_x_int >=
thread_data->width || new_y_int < 0 || new_y_int >=
thread_data->height) {
344 if (new_x_int < 0 || new_x_int + 1 >=
thread_data->width || new_y_int < 0 || new_y_int + 1 >=
thread_data->height) {
348 thread_data->data_in[ new_x_int * 3 + rgb_index + new_y_int *
thread_data->linesize_in] * (new_x_int + 1 - new_x) * (new_y_int + 1 - new_y)
349 +
thread_data->data_in[(new_x_int + 1) * 3 + rgb_index + new_y_int *
thread_data->linesize_in] * (new_x - new_x_int) * (new_y_int + 1 - new_y)
350 +
thread_data->data_in[ new_x_int * 3 + rgb_index + (new_y_int + 1) *
thread_data->linesize_in] * (new_x_int + 1 - new_x) * (new_y - new_y_int)
351 +
thread_data->data_in[(new_x_int + 1) * 3 + rgb_index + (new_y_int + 1) *
thread_data->linesize_in] * (new_x - new_x_int) * (new_y - new_y_int);
361 for (j = 0; j < 4; ++j)
362 for (
i = 0;
i < 4; ++
i) {
363 if (new_x_int +
i - 2 < 0 || new_x_int +
i - 2 >=
thread_data->width || new_y_int + j - 2 < 0 || new_y_int + j - 2 >=
thread_data->height)
365 d =
square(new_x - (new_x_int +
i - 2)) *
square(new_y - (new_y_int + j - 2));
370 interpolated +=
thread_data->data_in[(new_x_int +
i - 2) * 3 + rgb_index + (new_y_int + j - 2) *
thread_data->linesize_in] * d;
375 interpolated /= norm;
376 thread_data->data_out[
x * 3 + rgb_index + y *
thread_data->linesize_out] = interpolated < 0.0f ? 0.0f : interpolated > 255.0f ? 255.0f : interpolated;
386 if (new_x_int < 0 || new_x_int >=
thread_data->width || new_y_int < 0 || new_y_int >=
thread_data->height) {
398 if (new_x_int < 0 || new_x_int + 1 >=
thread_data->width || new_y_int < 0 || new_y_int + 1 >=
thread_data->height) {
402 thread_data->data_in[ new_x_int * 3 + rgb_index + new_y_int *
thread_data->linesize_in] * (new_x_int + 1 - new_x) * (new_y_int + 1 - new_y)
403 +
thread_data->data_in[(new_x_int + 1) * 3 + rgb_index + new_y_int *
thread_data->linesize_in] * (new_x - new_x_int) * (new_y_int + 1 - new_y)
404 +
thread_data->data_in[ new_x_int * 3 + rgb_index + (new_y_int + 1) *
thread_data->linesize_in] * (new_x_int + 1 - new_x) * (new_y - new_y_int)
405 +
thread_data->data_in[(new_x_int + 1) * 3 + rgb_index + (new_y_int + 1) *
thread_data->linesize_in] * (new_x - new_x_int) * (new_y - new_y_int);
415 for (j = 0; j < 4; ++j)
416 for (
i = 0;
i < 4; ++
i) {
417 if (new_x_int +
i - 2 < 0 || new_x_int +
i - 2 >=
thread_data->width || new_y_int + j - 2 < 0 || new_y_int + j - 2 >=
thread_data->height)
419 d =
square(new_x - (new_x_int +
i - 2)) *
square(new_y - (new_y_int + j - 2));
424 interpolated +=
thread_data->data_in[(new_x_int +
i - 2) * 3 + rgb_index + (new_y_int + j - 2) *
thread_data->linesize_in] * d;
429 interpolated /= norm;
430 thread_data->data_out[
x * 3 + rgb_index + y *
thread_data->linesize_out] = interpolated < 0.0f ? 0.0f : interpolated > 255.0f ? 255.0f : interpolated;
458 .data_in =
in->data[0],
459 .linesize_in =
in->linesize[0],
466 &vignetting_thread_data,
483 .data_in =
in->data[0],
484 .data_out =
out->data[0],
485 .linesize_in =
in->linesize[0],
486 .linesize_out =
out->linesize[0],
488 .mode = lensfun->
mode,
494 &distortion_correction_thread_data,
510 lf_camera_destroy(lensfun->
camera);
512 lf_lens_destroy(lensfun->
lens);
514 lf_modifier_destroy(lensfun->
modifier);
539 .description =
NULL_IF_CONFIG_SMALL(
"Apply correction to an image based on info derived from the lensfun database."),
546 .priv_class = &lensfun_class,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
static int distortion_correction_filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
static float lanczos_kernel(float x)
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.
int av_frame_make_writable(AVFrame *frame)
Ensure that the frame data is writable, avoiding data copy if possible.
const char * name
Filter name.
static uint32_t reverse(uint32_t num, int bits)
AVFormatInternal * internal
An opaque field for libavformat internal usage.
A link between two filters.
static av_cold void uninit(AVFilterContext *ctx)
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo x
const float * distortion_coords
static const AVFilterPad lensfun_inputs[]
A filter pad used for either input or output.
Mode
Frame type (Table 1a in 3GPP TS 26.101)
static float square(float x)
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
static const AVFilterPad outputs[]
Describe the class of an AVClass context structure.
static const AVFilterPad lensfun_outputs[]
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
static const AVOption lensfun_options[]
static int vignetting_filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
float * distortion_coords
const float * interpolation
@ AV_PIX_FMT_RGB24
packed RGB 8:8:8, 24bpp, RGBRGB...
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define LANCZOS_RESOLUTION
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_LOG_INFO
Standard information.
static int config_props(AVFilterLink *inlink)
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
static int query_formats(AVFilterContext *ctx)
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)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
#define i(width, name, range_min, range_max)
int w
agreed upon image width
#define av_malloc_array(a, b)
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
const char * name
Pad name.
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
int h
agreed upon image height
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
AVFILTER_DEFINE_CLASS(lensfun)
#define flags(name, subs,...)
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static av_cold int init(AVFilterContext *ctx)