49 #define OFFSET(x) offsetof(ExtractPlanesContext, x) 50 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM 65 #define EIGHTBIT_FORMATS \ 69 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, \ 70 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \ 71 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, \ 72 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, \ 73 AV_PIX_FMT_YUVJ411P, \ 74 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \ 75 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, \ 76 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, \ 77 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, \ 78 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, \ 79 AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0, \ 80 AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR, \ 81 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP 83 #define HIGHDEPTH_FORMATS(suf) \ 84 AV_PIX_FMT_YA16##suf, AV_PIX_FMT_GRAY16##suf, \ 85 AV_PIX_FMT_YUV420P16##suf, AV_PIX_FMT_YUVA420P16##suf, \ 86 AV_PIX_FMT_YUV422P16##suf, AV_PIX_FMT_YUVA422P16##suf, \ 87 AV_PIX_FMT_YUV444P16##suf, AV_PIX_FMT_YUVA444P16##suf, \ 88 AV_PIX_FMT_RGB48##suf, AV_PIX_FMT_BGR48##suf, \ 89 AV_PIX_FMT_RGBA64##suf, AV_PIX_FMT_BGRA64##suf, \ 90 AV_PIX_FMT_GBRP16##suf, AV_PIX_FMT_GBRAP16##suf, \ 91 AV_PIX_FMT_YUV420P10##suf, \ 92 AV_PIX_FMT_YUV422P10##suf, \ 93 AV_PIX_FMT_YUV444P10##suf, \ 94 AV_PIX_FMT_YUV440P10##suf, \ 95 AV_PIX_FMT_YUVA420P10##suf, \ 96 AV_PIX_FMT_YUVA422P10##suf, \ 97 AV_PIX_FMT_YUVA444P10##suf, \ 98 AV_PIX_FMT_YUV420P12##suf, \ 99 AV_PIX_FMT_YUV422P12##suf, \ 100 AV_PIX_FMT_YUV444P12##suf, \ 101 AV_PIX_FMT_YUV440P12##suf, \ 102 AV_PIX_FMT_YUVA422P12##suf, \ 103 AV_PIX_FMT_YUVA444P12##suf, \ 104 AV_PIX_FMT_GBRP10##suf, AV_PIX_FMT_GBRAP10##suf, \ 105 AV_PIX_FMT_GBRP12##suf, AV_PIX_FMT_GBRAP12##suf, \ 106 AV_PIX_FMT_YUV420P9##suf, \ 107 AV_PIX_FMT_YUV422P9##suf, \ 108 AV_PIX_FMT_YUV444P9##suf, \ 109 AV_PIX_FMT_YUVA420P9##suf, \ 110 AV_PIX_FMT_YUVA422P9##suf, \ 111 AV_PIX_FMT_YUVA444P9##suf, \ 112 AV_PIX_FMT_GBRP9##suf, \ 113 AV_PIX_FMT_GBRP14##suf, \ 114 AV_PIX_FMT_YUV420P14##suf, \ 115 AV_PIX_FMT_YUV422P14##suf, \ 116 AV_PIX_FMT_YUV444P14##suf 156 in_pixfmts = in_pixfmts_be;
158 in_pixfmts = in_pixfmts_le;
173 out_pixfmts = out8_pixfmts;
174 else if (!
be && depth == 9)
175 out_pixfmts = out9le_pixfmts;
176 else if (
be && depth == 9)
177 out_pixfmts = out9be_pixfmts;
178 else if (!
be && depth == 10)
179 out_pixfmts = out10le_pixfmts;
180 else if (
be && depth == 10)
181 out_pixfmts = out10be_pixfmts;
182 else if (!
be && depth == 12)
183 out_pixfmts = out12le_pixfmts;
184 else if (
be && depth == 12)
185 out_pixfmts = out12be_pixfmts;
186 else if (!
be && depth == 14)
187 out_pixfmts = out14le_pixfmts;
188 else if (
be && depth == 14)
189 out_pixfmts = out14be_pixfmts;
191 out_pixfmts = out16be_pixfmts;
193 out_pixfmts = out16le_pixfmts;
206 int plane_avail,
ret,
i;
226 for (i = 0; i < 4; i++)
227 s->
map[i] = rgba_map[s->
map[i]];
241 if (s->
map[output] == 1 || s->
map[output] == 2) {
256 for (y = 0; y <
height; y++) {
259 for (x = 0; x <
width; x++)
260 dst[x] = src[x * step + comp];
263 for (x = 0; x <
width; x++) {
264 dst[x * 2 ] = src[x * step + comp * 2 ];
265 dst[x * 2 + 1] = src[x * step + comp * 2 + 1];
278 int i, eof = 0,
ret = 0;
282 const int idx = s->
map[
i];
298 outlink->
w, outlink->
h,
328 for (i = 0; i < 4; i++) {
332 if (!(planes & (1 << i)))
371 .
name =
"extractplanes",
374 .priv_class = &extractplanes_class,
378 .
inputs = extractplanes_inputs,
383 #if CONFIG_ALPHAEXTRACT_FILTER 395 .
name =
"alphaextract",
397 "grayscale image component."),
399 .
init = init_alphaextract,
402 .
inputs = extractplanes_inputs,
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
Main libavfilter public API header.
int h
agreed upon image height
enum AVMediaType type
AVFilterPad type.
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
AVFilterFormatsConfig outcfg
Lists of supported formats / etc.
Y , 12bpp, little-endian.
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
const char * name
Pad name.
AVFilterLink ** inputs
array of pointers to input links
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
AVFilterPad * output_pads
array of output pads
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce output
#define AVERROR_EOF
End of file.
Y , 10bpp, little-endian.
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
A filter pad used for either input or output.
A link between two filters.
#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.
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
unsigned nb_outputs
number of output pads
#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
int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel for the pixel format described by pixdesc, including any padding ...
int w
agreed upon image width
char * av_asprintf(const char *fmt,...)
static const struct @321 planes[]
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
uint8_t nb_components
The number of components each pixel has, (1-4)
int(* config_props)(AVFilterLink *link)
Link configuration callback.
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 the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
AVFilterContext * src
source filter
static const AVFilterPad outputs[]
int format
agreed upon media format
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
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...
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it be(in the first position) for now.Options-------Then comes the options array.This is what will define the user accessible options.For example
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
AVFilter ff_vf_alphaextract
Describe the class of an AVClass context structure.
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
int ff_outlink_get_status(AVFilterLink *link)
Get the status on an output link.
const char * name
Filter name.
Y , 14bpp, little-endian.
AVFilterLink ** outputs
array of pointers to output links
#define flags(name, subs,...)
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
AVFilterFormatsConfig incfg
Lists of supported formats / etc.
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
AVFilterContext * dst
dest filter
Y , 16bpp, little-endian.
AVFilterPad * srcpad
output pad on the source filter
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
int depth
Number of bits in the component.
static int ff_insert_outpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new output pad for the filter.
AVPixelFormat
Pixel format.
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
#define AV_CEIL_RSHIFT(a, b)