Go to the documentation of this file.
72 #define ALIGN (HAVE_SIMD_ALIGN_64 ? 64 : 32)
77 int ret, padded_height;
79 ptrdiff_t linesizes[4];
80 size_t total_size,
sizes[4];
92 if (!
frame->linesize[0]) {
102 for (
int i = 0;
i < 4 &&
frame->linesize[
i];
i++)
106 for (
int i = 0;
i < 4;
i++)
107 linesizes[
i] =
frame->linesize[
i];
111 padded_height, linesizes)) < 0)
114 total_size = 4 * plane_padding + 4 *
align;
115 for (
int i = 0;
i < 4;
i++) {
116 if (
sizes[
i] > SIZE_MAX - total_size)
122 if (!
frame->buf[0]) {
131 for (
int i = 1;
i < 4;
i++) {
133 frame->data[
i] +=
i * plane_padding;
154 if (!
frame->linesize[0]) {
167 sizeof(*
frame->extended_data));
169 sizeof(*
frame->extended_buf));
170 if (!
frame->extended_data || !
frame->extended_buf) {
194 if (!
frame->extended_buf[
i]) {
207 if (
frame->format < 0)
212 else if (
frame->nb_samples > 0 &&
221 dst->pict_type =
src->pict_type;
222 dst->sample_aspect_ratio =
src->sample_aspect_ratio;
223 dst->crop_top =
src->crop_top;
224 dst->crop_bottom =
src->crop_bottom;
225 dst->crop_left =
src->crop_left;
226 dst->crop_right =
src->crop_right;
228 dst->duration =
src->duration;
229 dst->repeat_pict =
src->repeat_pict;
230 dst->sample_rate =
src->sample_rate;
231 dst->opaque =
src->opaque;
232 dst->pkt_dts =
src->pkt_dts;
233 dst->time_base =
src->time_base;
234 dst->quality =
src->quality;
235 dst->best_effort_timestamp =
src->best_effort_timestamp;
237 dst->decode_error_flags =
src->decode_error_flags;
238 dst->color_primaries =
src->color_primaries;
239 dst->color_trc =
src->color_trc;
240 dst->colorspace =
src->colorspace;
241 dst->color_range =
src->color_range;
242 dst->chroma_location =
src->chroma_location;
246 for (
int i = 0;
i <
src->nb_side_data;
i++) {
250 && (
src->width !=
dst->width ||
src->height !=
dst->height))
284 dst->format =
src->format;
286 dst->height =
src->height;
287 dst->nb_samples =
src->nb_samples;
321 if (
src->extended_buf) {
323 sizeof(*
dst->extended_buf));
324 if (!
dst->extended_buf) {
328 dst->nb_extended_buf =
src->nb_extended_buf;
330 for (
int i = 0;
i <
src->nb_extended_buf;
i++) {
332 if (!
dst->extended_buf[
i]) {
339 if (
src->hw_frames_ctx) {
341 if (!
dst->hw_frames_ctx) {
348 if (
src->extended_data !=
src->data) {
349 int ch =
dst->ch_layout.nb_channels;
357 if (!
dst->extended_data) {
361 memcpy(
dst->extended_data,
src->extended_data,
sizeof(*
src->extended_data) * ch);
363 dst->extended_data =
dst->data;
365 memcpy(
dst->data,
src->data,
sizeof(
src->data));
366 memcpy(
dst->linesize,
src->linesize,
sizeof(
src->linesize));
386 if (
src->data[0] ||
src->data[1]
387 ||
src->data[2] ||
src->data[3])
395 dst->format =
src->format;
397 dst->height =
src->height;
398 dst->nb_samples =
src->nb_samples;
417 if (
src->extended_buf) {
418 if (
dst->nb_extended_buf !=
src->nb_extended_buf) {
419 int nb_extended_buf =
FFMIN(
dst->nb_extended_buf,
src->nb_extended_buf);
422 for (
int i = nb_extended_buf;
i <
dst->nb_extended_buf;
i++)
426 src->nb_extended_buf);
432 dst->nb_extended_buf =
src->nb_extended_buf;
434 memset(&
dst->extended_buf[nb_extended_buf], 0,
435 (
src->nb_extended_buf - nb_extended_buf) *
sizeof(*
dst->extended_buf));
438 for (
int i = 0;
i <
src->nb_extended_buf;
i++) {
443 }
else if (
dst->extended_buf) {
444 for (
int i = 0;
i <
dst->nb_extended_buf;
i++)
453 if (
dst->extended_data !=
dst->data)
456 if (
src->extended_data !=
src->data) {
457 int ch =
dst->ch_layout.nb_channels;
464 if (ch > SIZE_MAX /
sizeof(*
dst->extended_data))
468 if (!
dst->extended_data) {
473 dst->extended_data =
dst->data;
475 memcpy(
dst->data,
src->data,
sizeof(
src->data));
476 memcpy(
dst->linesize,
src->linesize,
sizeof(
src->linesize));
507 for (
int i = 0;
i <
frame->nb_extended_buf;
i++)
532 if (
src->extended_data ==
src->data)
533 dst->extended_data =
dst->data;
548 for (
int i = 0;
i <
frame->nb_extended_buf;
i++)
562 memset(&
tmp, 0,
sizeof(
tmp));
573 if (
frame->hw_frames_ctx)
595 if (
tmp.data ==
tmp.extended_data)
611 if (
frame->nb_samples) {
619 if (plane < 0 || plane >=
planes || !
frame->extended_data[plane])
621 data = (uintptr_t)
frame->extended_data[plane];
625 uintptr_t buf_begin = (uintptr_t)buf->
data;
627 if (
data >= buf_begin && data < buf_begin + buf->
size)
630 for (
int i = 0;
i <
frame->nb_extended_buf;
i++) {
632 uintptr_t buf_begin = (uintptr_t)buf->
data;
634 if (
data >= buf_begin && data < buf_begin + buf->
size)
674 if (
dst->width <
src->width ||
675 dst->height <
src->height)
678 if (
src->hw_frames_ctx ||
dst->hw_frames_ctx)
699 if (
dst->nb_samples !=
src->nb_samples ||
704 if (!
dst->extended_data[
i] || !
src->extended_data[
i])
715 if (
dst->format !=
src->format ||
dst->format < 0)
718 if (
dst->width > 0 &&
dst->height > 0)
720 else if (
dst->nb_samples > 0 &&
735 for (
int i = 0;
frame->data[
i];
i++) {
737 int shift_x = (
i == 1 ||
i == 2) ?
desc->log2_chroma_w : 0;
738 int shift_y = (
i == 1 ||
i == 2) ?
desc->log2_chroma_h : 0;
746 for (
int j = 0; j <
desc->nb_components; j++) {
747 if (
desc->comp[j].plane ==
i) {
756 (
frame->crop_left >> shift_x) *
comp->step;
771 if (
frame->crop_left >= INT_MAX -
frame->crop_right ||
772 frame->crop_top >= INT_MAX -
frame->crop_bottom ||
788 frame->crop_right = 0;
789 frame->crop_bottom = 0;
800 int log2_crop_align =
frame->crop_left ?
ff_ctz(
frame->crop_left) : INT_MAX;
801 int min_log2_align = INT_MAX;
803 for (
int i = 0;
frame->data[
i];
i++) {
805 min_log2_align =
FFMIN(log2_align, min_log2_align);
810 if (log2_crop_align < min_log2_align)
813 if (min_log2_align < 5 && log2_crop_align != INT_MAX) {
814 frame->crop_left &= ~((1 << (5 + log2_crop_align - min_log2_align)) - 1);
821 for (
int i = 0;
frame->data[
i];
i++)
826 frame->crop_left = 0;
827 frame->crop_right = 0;
829 frame->crop_bottom = 0;
int av_samples_copy(uint8_t *const *dst, uint8_t *const *src, int dst_offset, int src_offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)
Copy samples 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
static int get_video_buffer(AVFrame *frame, int align)
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, size_t size)
Add a new side data to a frame.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
uint8_t * data
The data buffer.
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.
static int frame_copy_props(AVFrame *dst, const AVFrame *src, int force_copy)
static int get_audio_buffer(AVFrame *frame, int align)
AVBufferRef * av_buffer_ref(const AVBufferRef *buf)
Create a new reference to an AVBuffer.
static const struct @487 planes[]
static int frame_copy_video(AVFrame *dst, const AVFrame *src)
int av_frame_apply_cropping(AVFrame *frame, int flags)
Crop the given video AVFrame according to its crop_left/crop_top/crop_right/ crop_bottom fields.
void * av_memdup(const void *p, size_t size)
Duplicate a buffer with av_malloc().
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
@ AV_FRAME_CROP_UNALIGNED
Apply the maximum possible cropping, even if it requires setting the AVFrame.data[] entries to unalig...
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 vf type
int av_image_fill_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt, int height, uint8_t *ptr, const int linesizes[4])
Fill plane data pointers for an image with pixel format pix_fmt and height height.
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1<< 16)) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(UINT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out->ch+ch,(const uint8_t **) in->ch+ch, off *(out-> planar
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
static void get_frame_defaults(AVFrame *frame)
#define FF_ARRAY_ELEMS(a)
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.
static const int offsets[]
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
@ AV_CHANNEL_ORDER_UNSPEC
Only the channel count is specified, without any further information about the channel order.
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
static int frame_copy_audio(AVFrame *dst, const AVFrame *src)
AVFrameSideData * ff_frame_side_data_add_from_buf(AVFrameSideData ***sd, int *nb_sd, enum AVFrameSideDataType type, AVBufferRef *buf)
static const int sizes[][2]
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
int av_image_fill_plane_sizes(size_t sizes[4], enum AVPixelFormat pix_fmt, int height, const ptrdiff_t linesizes[4])
Fill plane sizes for an image with pixel format pix_fmt and height height.
Rational number (pair of numerator and denominator).
void av_frame_side_data_remove(AVFrameSideData ***sd, int *nb_sd, enum AVFrameSideDataType type)
Remove and free all side data instances of the given type from an array.
AVFrameSideData * av_frame_new_side_data_from_buf(AVFrame *frame, enum AVFrameSideDataType type, AVBufferRef *buf)
Add a new side data to a frame from an existing AVBufferRef.
AVBufferRef * av_frame_get_plane_buffer(const AVFrame *frame, int plane)
Get the buffer reference a given data plane is stored in.
@ AVCOL_RANGE_UNSPECIFIED
@ AV_FRAME_DATA_PANSCAN
The data is the AVPanScan struct defined in libavcodec.
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
#define AV_NUM_DATA_POINTERS
#define AV_NOPTS_VALUE
Undefined timestamp value.
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
@ AVCHROMA_LOC_UNSPECIFIED
static const uint8_t *BS_FUNC() align(BSCTX *bc)
Skip bits to a byte boundary.
void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type)
Remove and free all side data instances of the given type.
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
AVBufferRef * av_buffer_alloc(size_t size)
Allocate an AVBuffer of the given size using av_malloc().
int av_channel_layout_compare(const AVChannelLayout *chl, const AVChannelLayout *chl1)
Check whether two channel layouts are semantically the same, i.e.
void av_refstruct_unref(void *objp)
Decrement the reference count of the underlying object and automatically free the object if there are...
#define i(width, name, range_min, range_max)
void av_frame_side_data_free(AVFrameSideData ***sd, int *nb_sd)
Free all side data entries and their contents, then zeroes out the values which the pointers are poin...
#define av_malloc_array(a, b)
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
int av_buffer_replace(AVBufferRef **pdst, const AVBufferRef *src)
Ensure dst refers to the same data as src.
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)
Get the required buffer size for the given audio parameters.
void * av_calloc(size_t nmemb, size_t size)
int av_buffer_is_writable(const AVBufferRef *buf)
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
int av_channel_layout_check(const AVChannelLayout *channel_layout)
Check whether a channel layout is valid, i.e.
int av_hwframe_transfer_data(AVFrame *dst, const AVFrame *src, int flags)
Copy data to or from a hw surface.
int av_frame_replace(AVFrame *dst, const AVFrame *src)
Ensure the destination frame refers to the same data described by the source frame,...
static void av_image_copy2(uint8_t *const dst_data[4], const int dst_linesizes[4], uint8_t *const src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Wrapper around av_image_copy() to workaround the limitation that the conversion from uint8_t * const ...
void av_refstruct_replace(void *dstp, const void *src)
Ensure *dstp refers to the same object as src.
void av_channel_layout_uninit(AVChannelLayout *channel_layout)
Free any allocated data in the channel layout and reset the channel count to 0.
enum AVFrameSideDataType type
static int ref[MAX_W *MAX_W]
int av_channel_layout_copy(AVChannelLayout *dst, const AVChannelLayout *src)
Make a copy of a channel layout.
A reference to a data buffer.
Structure to hold side data for an AVFrame.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
static int calc_cropping_offsets(size_t offsets[4], const AVFrame *frame, const AVPixFmtDescriptor *desc)
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
static const AVFrameSideData * av_frame_side_data_get(AVFrameSideData *const *sd, const int nb_sd, enum AVFrameSideDataType type)
Wrapper around av_frame_side_data_get_c() to workaround the limitation that for any type T the conver...
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags)
Allocate a new frame attached to the given AVHWFramesContext.