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41 #define OFFSET(x) offsetof(PPFilterContext, x)
42 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
65 char *res,
int res_len,
int flags)
69 if (!strcmp(cmd,
"quality")) {
126 const int aligned_w =
FFALIGN(outlink->
w, 8);
127 const int aligned_h =
FFALIGN(outlink->
h, 8);
129 int qstride, qp_type;
144 aligned_w, outlink->
h,
194 .priv_class = &pp_class,
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
pp_mode * pp_get_mode_by_name_and_quality(const char *name, int quality)
Return a pp_mode or NULL if an error occurred.
static int pp_config_props(AVFilterLink *inlink)
AVPixelFormat
Pixel format.
static av_cold int init(AVCodecContext *avctx)
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 const AVFilterPad pp_outputs[]
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
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.
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
const char * name
Filter name.
A link between two filters.
#define PP_PICT_TYPE_QP2
MPEG2 style QScale.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int8_t * av_frame_get_qp_table(AVFrame *f, int *stride, int *type)
static const AVOption pp_options[]
A filter pad used for either input or output.
av_cold void pp_free_context(void *vc)
void pp_free_mode(pp_mode *mode)
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
void pp_postprocess(const uint8_t *src[3], const int srcStride[3], uint8_t *dst[3], const int dstStride[3], int width, int height, const int8_t *QP_store, int QPStride, pp_mode *vm, void *vc, int pict_type)
AVFILTER_DEFINE_CLASS(pp)
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static const AVFilterPad outputs[]
static enum AVPixelFormat pix_fmts[]
static const AVFilterPad pp_inputs[]
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
static av_cold int pp_init(AVFilterContext *ctx)
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
av_cold pp_context * pp_get_context(int width, int height, int cpuCaps)
static int pp_query_formats(AVFilterContext *ctx)
Describe the class of an AVClass context structure.
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
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
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
enum AVPictureType pict_type
Picture type of the frame.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AVERROR_EXTERNAL
Generic error in an external library.
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
#define i(width, name, range_min, range_max)
int w
agreed upon image width
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
const char * name
Pad name.
pp_mode * modes[PP_QUALITY_MAX+1]
static int pp_process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
int h
agreed upon image height
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
static av_cold void pp_uninit(AVFilterContext *ctx)
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
static int query_formats(AVFilterContext *ctx)
#define flags(name, subs,...)
static int pp_filter_frame(AVFilterLink *inlink, AVFrame *inbuf)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static av_cold int uninit(AVCodecContext *avctx)