104 int i, p, ret,
offset[4] = { 0 };
127 height[0] = height[3] = inlink->
h;
135 linesize[p], height[p]);
136 offset[p] += height[p];
142 linesize[p], height[p]);
143 offset[p] += linesize[p];
164 if (ctx->
inputs[i]->
w != width) {
172 if (ctx->
inputs[i]->
h != height) {
227 #define OFFSET(x) offsetof(StackContext, x)
228 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
231 {
"shortest",
"force termination when the shortest input terminates",
OFFSET(shortest),
AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, .flags =
FLAGS },
245 #if CONFIG_HSTACK_FILTER
247 #define hstack_options stack_options
254 .priv_class = &hstack_class,
264 #if CONFIG_VSTACK_FILTER
266 #define vstack_options stack_options
273 .priv_class = &vstack_class,
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Main libavfilter public API header.
int h
agreed upon image height
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
enum AVMediaType type
AVFilterPad type.
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
int64_t pts
Timestamp of the current event.
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
const char * name
Pad name.
AVFilterLink ** inputs
array of pointers to input links
static int request_frame(AVFilterLink *outlink)
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
static int query_formats(AVFilterContext *ctx)
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
static av_cold void uninit(AVFilterContext *ctx)
FFFrameSyncIn * in
Pointer to array of inputs.
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
A filter pad used for either input or output.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
int ff_framesync_filter_frame(FFFrameSync *fs, AVFilterLink *inlink, AVFrame *in)
Accept a frame on a filter input.
A link between two filters.
AVFilterPad * input_pads
array of input pads
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int config_output(AVFilterLink *outlink)
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
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 const AVOption stack_options[]
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
int(* filter_frame)(AVFilterLink *link, AVFrame *frame)
Filtering callback.
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_FLAG_HWACCEL
Pixel format is an HW accelerated format.
AVRational time_base
Time base for the incoming frames.
static const uint8_t offset[127][2]
int w
agreed upon image width
char * av_asprintf(const char *fmt,...)
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
unsigned nb_inputs
number of input pads
int ff_framesync_request_frame(FFFrameSync *fs, AVFilterLink *outlink)
Request a frame on the filter output.
const AVPixFmtDescriptor * desc
AVRational time_base
Time base for the output events.
AVFilterContext * src
source filter
void * opaque
Opaque pointer, not used by the API.
int format
agreed upon media format
Extend the frame to infinity.
static av_cold int init(AVFilterContext *ctx)
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...
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
int ff_framesync_init(FFFrameSync *fs, void *parent, unsigned nb_in)
Initialize a frame sync structure.
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
BYTE int const BYTE int int int height
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events...
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.
rational number numerator/denominator
const char * name
Filter name.
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
AVFilterLink ** outputs
array of pointers to output links
static enum AVPixelFormat pix_fmts[]
void * av_calloc(size_t nmemb, size_t size)
Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vec...
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int process_frame(FFFrameSync *fs)
static const AVFilterPad outputs[]
Completely stop all streams with this one.
AVFilterContext * dst
dest filter
#define AVFILTER_DEFINE_CLASS(fname)
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.
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
const AVFilter * filter
the AVFilter of which this is an instance
#define AV_CEIL_RSHIFT(a, b)
static int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new input pad for the filter.