FFmpeg
vf_transpose_npp.c
Go to the documentation of this file.
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <nppi.h>
20 #include <stdio.h>
21 #include <string.h>
22 
23 #include "libavutil/common.h"
24 #include "libavutil/hwcontext.h"
26 #include "libavutil/cuda_check.h"
27 #include "libavutil/internal.h"
28 #include "libavutil/opt.h"
29 #include "libavutil/pixdesc.h"
30 
31 #include "avfilter.h"
32 #include "formats.h"
33 #include "internal.h"
34 #include "video.h"
35 
36 #define CHECK_CU(x) FF_CUDA_CHECK_DL(ctx, device_hwctx->internal->cuda_dl, x)
37 
38 static const enum AVPixelFormat supported_formats[] = {
41 };
42 
47 };
48 
49 enum Transpose {
54 };
55 
60 };
61 
62 typedef struct NPPTransposeStageContext {
66  struct {
67  int width;
68  int height;
69  } planes_in[3], planes_out[3];
73 
74 typedef struct NPPTransposeContext {
75  const AVClass *class;
78 
79  int passthrough; ///< PassthroughType, landscape passthrough mode enabled
80  int dir; ///< TransposeDir
82 
84 {
85  NPPTransposeContext *s = ctx->priv;
86  int i;
87 
88  for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
89  s->stages[i].frame = av_frame_alloc();
90  if (!s->stages[i].frame)
91  return AVERROR(ENOMEM);
92  }
93 
95  if (!s->tmp_frame)
96  return AVERROR(ENOMEM);
97 
98  return 0;
99 }
100 
102 {
103  NPPTransposeContext *s = ctx->priv;
104  int i;
105 
106  for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
107  av_frame_free(&s->stages[i].frame);
109  }
110 
112 }
113 
115 {
116  static const enum AVPixelFormat pixel_formats[] = {
118  };
119 
120  AVFilterFormats *pix_fmts = ff_make_format_list(pixel_formats);
121  return ff_set_common_formats(ctx, pix_fmts);
122 }
123 
124 static int init_stage(NPPTransposeStageContext *stage, AVBufferRef *device_ctx)
125 {
126  AVBufferRef *out_ref = NULL;
127  AVHWFramesContext *out_ctx;
128  int in_sw, in_sh, out_sw, out_sh;
129  int ret, i;
130 
131  av_pix_fmt_get_chroma_sub_sample(stage->in_fmt, &in_sw, &in_sh);
132  av_pix_fmt_get_chroma_sub_sample(stage->out_fmt, &out_sw, &out_sh);
133 
134  if (!stage->planes_out[0].width) {
135  stage->planes_out[0].width = stage->planes_in[0].width;
136  stage->planes_out[0].height = stage->planes_in[0].height;
137  }
138 
139  for (i = 1; i < FF_ARRAY_ELEMS(stage->planes_in); i++) {
140  stage->planes_in[i].width = stage->planes_in[0].width >> in_sw;
141  stage->planes_in[i].height = stage->planes_in[0].height >> in_sh;
142  stage->planes_out[i].width = stage->planes_out[0].width >> out_sw;
143  stage->planes_out[i].height = stage->planes_out[0].height >> out_sh;
144  }
145 
146  out_ref = av_hwframe_ctx_alloc(device_ctx);
147  if (!out_ref)
148  return AVERROR(ENOMEM);
149  out_ctx = (AVHWFramesContext*)out_ref->data;
150 
151  out_ctx->format = AV_PIX_FMT_CUDA;
152  out_ctx->sw_format = stage->out_fmt;
153  out_ctx->width = FFALIGN(stage->planes_out[0].width, 32);
154  out_ctx->height = FFALIGN(stage->planes_out[0].height, 32);
155 
156  ret = av_hwframe_ctx_init(out_ref);
157  if (ret < 0)
158  goto fail;
159 
160  av_frame_unref(stage->frame);
161  ret = av_hwframe_get_buffer(out_ref, stage->frame, 0);
162  if (ret < 0)
163  goto fail;
164 
165  stage->frame->width = stage->planes_out[0].width;
166  stage->frame->height = stage->planes_out[0].height;
167  av_buffer_unref(&stage->frames_ctx);
168  stage->frames_ctx = out_ref;
169 
170  return 0;
171 
172 fail:
173  av_buffer_unref(&out_ref);
174  return ret;
175 }
176 
178 {
179  int i;
180 
181  for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
182  if (supported_formats[i] == fmt)
183  return 1;
184 
185  return 0;
186 }
187 
188 static int init_processing_chain(AVFilterContext *ctx, int in_width, int in_height,
189  int out_width, int out_height)
190 {
191  NPPTransposeContext *s = ctx->priv;
192  AVHWFramesContext *in_frames_ctx;
193  enum AVPixelFormat format;
194  int i, ret, last_stage = -1;
195  int rot_width = out_width, rot_height = out_height;
196 
197  /* check that we have a hw context */
198  if (!ctx->inputs[0]->hw_frames_ctx) {
199  av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n");
200  return AVERROR(EINVAL);
201  }
202 
203  in_frames_ctx = (AVHWFramesContext*)ctx->inputs[0]->hw_frames_ctx->data;
204  format = in_frames_ctx->sw_format;
205 
206  if (!format_is_supported(format)) {
207  av_log(ctx, AV_LOG_ERROR, "Unsupported input format: %s\n",
208  av_get_pix_fmt_name(format));
209  return AVERROR(ENOSYS);
210  }
211 
212  if (s->dir != NPP_TRANSPOSE_CCLOCK_FLIP) {
214  }
215 
218 
219  /* Rotating by 180° in case of clock_flip, or not at all for cclock_flip, so width/height unchanged by rotation */
220  rot_width = in_width;
221  rot_height = in_height;
222  }
223 
226  s->stages[STAGE_ROTATE].planes_in[0].width = in_width;
227  s->stages[STAGE_ROTATE].planes_in[0].height = in_height;
228  s->stages[STAGE_ROTATE].planes_out[0].width = rot_width;
229  s->stages[STAGE_ROTATE].planes_out[0].height = rot_height;
232  s->stages[STAGE_TRANSPOSE].planes_in[0].width = rot_width;
233  s->stages[STAGE_TRANSPOSE].planes_in[0].height = rot_height;
234  s->stages[STAGE_TRANSPOSE].planes_out[0].width = out_width;
235  s->stages[STAGE_TRANSPOSE].planes_out[0].height = out_height;
236 
237  /* init the hardware contexts */
238  for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
239  if (!s->stages[i].stage_needed)
240  continue;
241  ret = init_stage(&s->stages[i], in_frames_ctx->device_ref);
242  if (ret < 0)
243  return ret;
244  last_stage = i;
245  }
246 
247  if (last_stage >= 0) {
248  ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
249  } else {
251  s->passthrough = 1;
252  }
253 
254  if (!ctx->outputs[0]->hw_frames_ctx)
255  return AVERROR(ENOMEM);
256 
257  return 0;
258 }
259 
261 {
262  AVFilterContext *ctx = outlink->src;
263  AVFilterLink *inlink = ctx->inputs[0];
264  NPPTransposeContext *s = ctx->priv;
265  int ret;
266 
267  if ((inlink->w >= inlink->h && s->passthrough == NPP_TRANSPOSE_PT_TYPE_LANDSCAPE) ||
268  (inlink->w <= inlink->h && s->passthrough == NPP_TRANSPOSE_PT_TYPE_PORTRAIT))
269  {
270  if (inlink->hw_frames_ctx) {
271  outlink->hw_frames_ctx = av_buffer_ref(inlink->hw_frames_ctx);
272  if (!outlink->hw_frames_ctx)
273  return AVERROR(ENOMEM);
274  }
275 
276  av_log(ctx, AV_LOG_VERBOSE,
277  "w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
278  inlink->w, inlink->h, inlink->w, inlink->h);
279  return 0;
280  } else {
282  }
283 
284  outlink->w = inlink->h;
285  outlink->h = inlink->w;
287 
288  ret = init_processing_chain(ctx, inlink->w, inlink->h, outlink->w, outlink->h);
289  if (ret < 0)
290  return ret;
291 
292  av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -transpose-> w:%d h:%d\n",
293  inlink->w, inlink->h, outlink->w, outlink->h);
294 
295  return 0;
296 }
297 
299  AVFrame *out, AVFrame *in)
300 {
301  NPPTransposeContext *s = ctx->priv;
302  NppStatus err;
303  int i;
304 
305  for (i = 0; i < FF_ARRAY_ELEMS(stage->planes_in) && i < FF_ARRAY_ELEMS(in->data) && in->data[i]; i++) {
306  int iw = stage->planes_in[i].width;
307  int ih = stage->planes_in[i].height;
308  int ow = stage->planes_out[i].width;
309  int oh = stage->planes_out[i].height;
310 
311  // nppRotate uses 0,0 as the rotation point
312  // need to shift the image accordingly after rotation
313  // need to substract 1 to get the correct coordinates
314  double angle = s->dir == NPP_TRANSPOSE_CLOCK ? -90.0 : s->dir == NPP_TRANSPOSE_CCLOCK ? 90.0 : 180.0;
315  int shiftw = (s->dir == NPP_TRANSPOSE_CLOCK || s->dir == NPP_TRANSPOSE_CLOCK_FLIP) ? ow - 1 : 0;
316  int shifth = (s->dir == NPP_TRANSPOSE_CCLOCK || s->dir == NPP_TRANSPOSE_CLOCK_FLIP) ? oh - 1 : 0;
317 
318  err = nppiRotate_8u_C1R(in->data[i], (NppiSize){ iw, ih },
319  in->linesize[i], (NppiRect){ 0, 0, iw, ih },
320  out->data[i], out->linesize[i],
321  (NppiRect){ 0, 0, ow, oh },
322  angle, shiftw, shifth, NPPI_INTER_NN);
323  if (err != NPP_SUCCESS) {
324  av_log(ctx, AV_LOG_ERROR, "NPP rotate error: %d\n", err);
325  return AVERROR_UNKNOWN;
326  }
327  }
328 
329  return 0;
330 }
331 
333  AVFrame *out, AVFrame *in)
334 {
335  NppStatus err;
336  int i;
337 
338  for (i = 0; i < FF_ARRAY_ELEMS(stage->planes_in) && i < FF_ARRAY_ELEMS(in->data) && in->data[i]; i++) {
339  int iw = stage->planes_in[i].width;
340  int ih = stage->planes_in[i].height;
341 
342  err = nppiTranspose_8u_C1R(in->data[i], in->linesize[i],
343  out->data[i], out->linesize[i],
344  (NppiSize){ iw, ih });
345  if (err != NPP_SUCCESS) {
346  av_log(ctx, AV_LOG_ERROR, "NPP transpose error: %d\n", err);
347  return AVERROR_UNKNOWN;
348  }
349  }
350 
351  return 0;
352 }
353 
355  AVFrame *out, AVFrame *in) = {
358 };
359 
361 {
362  NPPTransposeContext *s = ctx->priv;
363  AVFrame *src = in;
364  int i, ret, last_stage = -1;
365 
366  for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
367  if (!s->stages[i].stage_needed)
368  continue;
369 
370  ret = npptranspose_process[i](ctx, &s->stages[i], s->stages[i].frame, src);
371  if (ret < 0)
372  return ret;
373 
374  src = s->stages[i].frame;
375  last_stage = i;
376  }
377 
378  if (last_stage < 0)
379  return AVERROR_BUG;
380 
381  ret = av_hwframe_get_buffer(src->hw_frames_ctx, s->tmp_frame, 0);
382  if (ret < 0)
383  return ret;
384 
385  av_frame_move_ref(out, src);
386  av_frame_move_ref(src, s->tmp_frame);
387 
388  ret = av_frame_copy_props(out, in);
389  if (ret < 0)
390  return ret;
391 
392  return 0;
393 }
394 
396 {
397  AVFilterContext *ctx = link->dst;
398  NPPTransposeContext *s = ctx->priv;
399  AVFilterLink *outlink = ctx->outputs[0];
401  AVCUDADeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx;
402  AVFrame *out = NULL;
403  CUcontext dummy;
404  int ret = 0;
405 
406  if (s->passthrough)
407  return ff_filter_frame(outlink, in);
408 
409  out = av_frame_alloc();
410  if (!out) {
411  ret = AVERROR(ENOMEM);
412  goto fail;
413  }
414 
415  ret = CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPushCurrent(device_hwctx->cuda_ctx));
416  if (ret < 0)
417  goto fail;
418 
419  ret = npptranspose_filter(ctx, out, in);
420 
421  CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPopCurrent(&dummy));
422  if (ret < 0)
423  goto fail;
424 
425  av_frame_free(&in);
426 
427  return ff_filter_frame(outlink, out);
428 
429 fail:
430  av_frame_free(&in);
431  av_frame_free(&out);
432  return ret;
433 }
434 
435 #define OFFSET(x) offsetof(NPPTransposeContext, x)
436 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
437 
438 static const AVOption options[] = {
439  { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = NPP_TRANSPOSE_CCLOCK_FLIP }, 0, 3, FLAGS, "dir" },
440  { "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_CCLOCK_FLIP }, 0, 0, FLAGS, "dir" },
441  { "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_CLOCK }, 0, 0, FLAGS, "dir" },
442  { "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_CCLOCK }, 0, 0, FLAGS, "dir" },
443  { "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_CLOCK_FLIP }, 0, 0, FLAGS, "dir" },
444  { "passthrough", "do not apply transposition if the input matches the specified geometry", OFFSET(passthrough), AV_OPT_TYPE_INT, { .i64 = NPP_TRANSPOSE_PT_TYPE_NONE }, 0, 2, FLAGS, "passthrough" },
445  { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_PT_TYPE_NONE }, 0, 0, FLAGS, "passthrough" },
446  { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_PT_TYPE_LANDSCAPE }, 0, 0, FLAGS, "passthrough" },
447  { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, { .i64 = NPP_TRANSPOSE_PT_TYPE_PORTRAIT }, 0, 0, FLAGS, "passthrough" },
448  { NULL },
449 };
450 
451 static const AVClass npptranspose_class = {
452  .class_name = "npptranspose",
453  .item_name = av_default_item_name,
454  .option = options,
455  .version = LIBAVUTIL_VERSION_INT,
456 };
457 
459  {
460  .name = "default",
461  .type = AVMEDIA_TYPE_VIDEO,
462  .filter_frame = npptranspose_filter_frame,
463  },
464  { NULL }
465 };
466 
468  {
469  .name = "default",
470  .type = AVMEDIA_TYPE_VIDEO,
471  .config_props = npptranspose_config_props,
472  },
473  { NULL }
474 };
475 
477  .name = "transpose_npp",
478  .description = NULL_IF_CONFIG_SMALL("NVIDIA Performance Primitives video transpose"),
479  .init = npptranspose_init,
480  .uninit = npptranspose_uninit,
481  .query_formats = npptranspose_query_formats,
482  .priv_size = sizeof(NPPTransposeContext),
483  .priv_class = &npptranspose_class,
484  .inputs = npptranspose_inputs,
485  .outputs = npptranspose_outputs,
486  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
487 };
NPPTransposeStageContext stages[STAGE_NB]
#define NULL
Definition: coverity.c:32
#define FF_FILTER_FLAG_HWFRAME_AWARE
The filter is aware of hardware frames, and any hardware frame context should not be automatically pr...
Definition: internal.h:385
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
Definition: buffer.c:125
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
enum AVPixelFormat out_fmt
const char * fmt
Definition: avisynth_c.h:861
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
Main libavfilter public API header.
struct NPPTransposeStageContext::@246 planes_out[3]
static int npptranspose_filter_frame(AVFilterLink *link, AVFrame *in)
int dir
TransposeDir.
int num
Numerator.
Definition: rational.h:59
static const AVFilterPad npptranspose_inputs[]
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
int width
The allocated dimensions of the frames in this pool.
Definition: hwcontext.h:228
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:208
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:582
#define src
Definition: vp8dsp.c:254
static int(*const npptranspose_process[])(AVFilterContext *ctx, NPPTransposeStageContext *stage, AVFrame *out, AVFrame *in)
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 format(the sample packing is implied by the sample format) and sample rate.The lists are not just lists
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame...
Definition: frame.h:634
static int npptranspose_init(AVFilterContext *ctx)
static void npptranspose_uninit(AVFilterContext *ctx)
const char * name
Pad name.
Definition: internal.h:60
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
static int format_is_supported(enum AVPixelFormat fmt)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:189
AVOptions.
Transpose
void * hwctx
The format-specific data, allocated and freed by libavutil along with this context.
Definition: hwcontext.h:91
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
static int npptranspose_filter(AVFilterContext *ctx, AVFrame *out, AVFrame *in)
#define FFALIGN(x, a)
Definition: macros.h:48
static enum AVPixelFormat supported_formats[]
#define av_log(a,...)
static const AVClass npptranspose_class
struct NPPTransposeStageContext::@246 planes_in[3]
A filter pad used for either input or output.
Definition: internal.h:54
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
int width
Definition: frame.h:353
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:568
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2550
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
TransposeStage
Passthrough
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
Definition: hwcontext.c:329
int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags)
Allocate a new frame attached to the given AVHWFramesContext.
Definition: hwcontext.c:465
#define fail()
Definition: checkasm.h:120
common internal API header
#define OFFSET(x)
static int npptranspose_query_formats(AVFilterContext *ctx)
AVHWDeviceContext * device_ctx
The parent AVHWDeviceContext.
Definition: hwcontext.h:148
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
FFmpeg internal API for CUDA.
static const AVFilterPad npptranspose_outputs[]
int dummy
Definition: motion.c:64
static int npptranspose_transpose(AVFilterContext *ctx, NPPTransposeStageContext *stage, AVFrame *out, AVFrame *in)
HW acceleration through CUDA.
Definition: pixfmt.h:235
static int npptranspose_config_props(AVFilterLink *outlink)
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define FF_ARRAY_ELEMS(a)
if(ret)
static const AVOption options[]
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
uint8_t * data
The data buffer.
Definition: buffer.h:89
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
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
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
This struct is allocated as AVHWDeviceContext.hwctx.
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
Rational number (pair of numerator and denominator).
Definition: rational.h:58
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:123
const char * name
Filter name.
Definition: avfilter.h:148
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 link
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
static int init_processing_chain(AVFilterContext *ctx, int in_width, int in_height, int out_width, int out_height)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
AVBufferRef * device_ref
A reference to the parent AVHWDeviceContext.
Definition: hwcontext.h:140
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
A reference to a data buffer.
Definition: buffer.h:81
static int npptranspose_rotate(AVFilterContext *ctx, NPPTransposeStageContext *stage, AVFrame *out, AVFrame *in)
int
enum AVPixelFormat in_fmt
#define CHECK_CU(x)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AVFilter ff_vf_transpose_npp
common internal and external API header
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
Definition: hwcontext.c:243
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
int den
Denominator.
Definition: rational.h:60
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
A list of supported formats for one end of a filter link.
Definition: formats.h:64
An instance of a filter.
Definition: avfilter.h:338
int height
Definition: frame.h:353
FILE * out
Definition: movenc.c:54
static int init_stage(NPPTransposeStageContext *stage, AVBufferRef *device_ctx)
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2438
internal API functions
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
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
Definition: hwcontext.h:221
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define FLAGS
int passthrough
PassthroughType, landscape passthrough mode enabled.