FFmpeg
vf_xfade_opencl.c
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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
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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 "libavutil/log.h"
20 #include "libavutil/mem.h"
21 #include "libavutil/opt.h"
22 #include "libavutil/pixdesc.h"
23 
24 #include "avfilter.h"
25 #include "filters.h"
26 #include "internal.h"
27 #include "opencl.h"
28 #include "opencl_source.h"
29 #include "video.h"
30 
43 };
44 
45 typedef struct XFadeOpenCLContext {
47 
49  const char *source_file;
50  const char *kernel_name;
51  int64_t duration;
52  int64_t offset;
53 
55  cl_kernel kernel;
56  cl_command_queue command_queue;
57 
58  int nb_planes;
59 
60  int64_t duration_pts;
61  int64_t offset_pts;
62  int64_t first_pts;
63  int64_t last_pts;
64  int64_t pts;
67  int eof[2];
68  AVFrame *xf[2];
70 
72  enum AVPixelFormat main_format,
73  enum AVPixelFormat xfade_format)
74 {
75  XFadeOpenCLContext *ctx = avctx->priv;
76  cl_int cle;
77  const AVPixFmtDescriptor *main_desc;
78  int err, main_planes;
79  const char *kernel_name;
80 
81  main_desc = av_pix_fmt_desc_get(main_format);
82  if (main_format != xfade_format) {
83  av_log(avctx, AV_LOG_ERROR, "Input formats are not same.\n");
84  return AVERROR(EINVAL);
85  }
86 
87  main_planes = 0;
88  for (int i = 0; i < main_desc->nb_components; i++)
89  main_planes = FFMAX(main_planes,
90  main_desc->comp[i].plane + 1);
91 
92  ctx->nb_planes = main_planes;
93 
94  if (ctx->transition == CUSTOM) {
95  err = ff_opencl_filter_load_program_from_file(avctx, ctx->source_file);
96  } else {
98  }
99  if (err < 0)
100  return err;
101 
102  ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
103  ctx->ocf.hwctx->device_id,
104  0, &cle);
105  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
106  "command queue %d.\n", cle);
107 
108  switch (ctx->transition) {
109  case CUSTOM: kernel_name = ctx->kernel_name; break;
110  case FADE: kernel_name = "fade"; break;
111  case WIPELEFT: kernel_name = "wipeleft"; break;
112  case WIPERIGHT: kernel_name = "wiperight"; break;
113  case WIPEUP: kernel_name = "wipeup"; break;
114  case WIPEDOWN: kernel_name = "wipedown"; break;
115  case SLIDELEFT: kernel_name = "slideleft"; break;
116  case SLIDERIGHT: kernel_name = "slideright"; break;
117  case SLIDEUP: kernel_name = "slideup"; break;
118  case SLIDEDOWN: kernel_name = "slidedown"; break;
119  default:
120  err = AVERROR_BUG;
121  goto fail;
122  }
123 
124  ctx->kernel = clCreateKernel(ctx->ocf.program, kernel_name, &cle);
125  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create kernel %d.\n", cle);
126 
127  ctx->initialised = 1;
128 
129  return 0;
130 
131 fail:
132  if (ctx->command_queue)
133  clReleaseCommandQueue(ctx->command_queue);
134  if (ctx->kernel)
135  clReleaseKernel(ctx->kernel);
136  return err;
137 }
138 
140 {
141  AVFilterLink *outlink = avctx->outputs[0];
142  XFadeOpenCLContext *ctx = avctx->priv;
143  AVFrame *output;
144  cl_int cle;
145  cl_float progress = av_clipf(1.f - ((cl_float)(ctx->pts - ctx->first_pts - ctx->offset_pts) / ctx->duration_pts), 0.f, 1.f);
146  size_t global_work[2];
147  int kernel_arg = 0;
148  int err, plane;
149 
150  if (!ctx->initialised) {
151  AVHWFramesContext *main_fc =
152  (AVHWFramesContext*)a->hw_frames_ctx->data;
153  AVHWFramesContext *xfade_fc =
154  (AVHWFramesContext*)b->hw_frames_ctx->data;
155 
156  err = xfade_opencl_load(avctx, main_fc->sw_format,
157  xfade_fc->sw_format);
158  if (err < 0)
159  return err;
160  }
161 
162  output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
163  if (!output) {
164  err = AVERROR(ENOMEM);
165  goto fail;
166  }
167 
168  for (plane = 0; plane < ctx->nb_planes; plane++) {
169  cl_mem mem;
170  kernel_arg = 0;
171 
172  mem = (cl_mem)output->data[plane];
173  CL_SET_KERNEL_ARG(ctx->kernel, kernel_arg, cl_mem, &mem);
174  kernel_arg++;
175 
176  mem = (cl_mem)ctx->xf[0]->data[plane];
177  CL_SET_KERNEL_ARG(ctx->kernel, kernel_arg, cl_mem, &mem);
178  kernel_arg++;
179 
180  mem = (cl_mem)ctx->xf[1]->data[plane];
181  CL_SET_KERNEL_ARG(ctx->kernel, kernel_arg, cl_mem, &mem);
182  kernel_arg++;
183 
184  CL_SET_KERNEL_ARG(ctx->kernel, kernel_arg, cl_float, &progress);
185  kernel_arg++;
186 
187  err = ff_opencl_filter_work_size_from_image(avctx, global_work,
188  output, plane, 0);
189  if (err < 0)
190  goto fail;
191 
192  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
193  global_work, NULL, 0, NULL, NULL);
194  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue xfade kernel "
195  "for plane %d: %d.\n", plane, cle);
196  }
197 
198  cle = clFinish(ctx->command_queue);
199  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
200 
201  err = av_frame_copy_props(output, ctx->xf[0]);
202  if (err < 0)
203  goto fail;
204 
205  output->pts = ctx->pts;
206 
207  return ff_filter_frame(outlink, output);
208 
209 fail:
211  return err;
212 }
213 
215 {
216  AVFilterContext *avctx = outlink->src;
217  XFadeOpenCLContext *ctx = avctx->priv;
218  AVFilterLink *inlink0 = avctx->inputs[0];
219  AVFilterLink *inlink1 = avctx->inputs[1];
220  int err;
221 
222  err = ff_opencl_filter_config_output(outlink);
223  if (err < 0)
224  return err;
225 
226  if (inlink0->w != inlink1->w || inlink0->h != inlink1->h) {
227  av_log(avctx, AV_LOG_ERROR, "First input link %s parameters "
228  "(size %dx%d) do not match the corresponding "
229  "second input link %s parameters (size %dx%d)\n",
230  avctx->input_pads[0].name, inlink0->w, inlink0->h,
231  avctx->input_pads[1].name, inlink1->w, inlink1->h);
232  return AVERROR(EINVAL);
233  }
234 
235  if (inlink0->time_base.num != inlink1->time_base.num ||
236  inlink0->time_base.den != inlink1->time_base.den) {
237  av_log(avctx, AV_LOG_ERROR, "First input link %s timebase "
238  "(%d/%d) do not match the corresponding "
239  "second input link %s timebase (%d/%d)\n",
240  avctx->input_pads[0].name, inlink0->time_base.num, inlink0->time_base.den,
241  avctx->input_pads[1].name, inlink1->time_base.num, inlink1->time_base.den);
242  return AVERROR(EINVAL);
243  }
244 
245  ctx->first_pts = ctx->last_pts = ctx->pts = AV_NOPTS_VALUE;
246 
247  outlink->time_base = inlink0->time_base;
248  outlink->sample_aspect_ratio = inlink0->sample_aspect_ratio;
249  outlink->frame_rate = inlink0->frame_rate;
250 
251  if (ctx->duration)
252  ctx->duration_pts = av_rescale_q(ctx->duration, AV_TIME_BASE_Q, outlink->time_base);
253  if (ctx->offset)
254  ctx->offset_pts = av_rescale_q(ctx->offset, AV_TIME_BASE_Q, outlink->time_base);
255 
256  return 0;
257 }
258 
260 {
261  XFadeOpenCLContext *ctx = avctx->priv;
262  AVFilterLink *outlink = avctx->outputs[0];
263  AVFrame *in = NULL;
264  int ret = 0, status;
265  int64_t pts;
266 
267  FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, avctx);
268 
269  if (ctx->xfade_is_over) {
270  ret = ff_inlink_consume_frame(avctx->inputs[1], &in);
271  if (ret < 0) {
272  return ret;
273  } else if (ret > 0) {
274  in->pts = (in->pts - ctx->last_pts) + ctx->pts;
275  return ff_filter_frame(outlink, in);
276  } else if (ff_inlink_acknowledge_status(avctx->inputs[1], &status, &pts)) {
277  ff_outlink_set_status(outlink, status, ctx->pts);
278  return 0;
279  } else if (!ret) {
280  if (ff_outlink_frame_wanted(outlink)) {
281  ff_inlink_request_frame(avctx->inputs[1]);
282  return 0;
283  }
284  }
285  }
286 
287  if (ff_inlink_queued_frames(avctx->inputs[0]) > 0) {
288  ctx->xf[0] = ff_inlink_peek_frame(avctx->inputs[0], 0);
289  if (ctx->xf[0]) {
290  if (ctx->first_pts == AV_NOPTS_VALUE) {
291  ctx->first_pts = ctx->xf[0]->pts;
292  }
293  ctx->pts = ctx->xf[0]->pts;
294  if (ctx->first_pts + ctx->offset_pts > ctx->xf[0]->pts) {
295  ctx->xf[0] = NULL;
296  ctx->need_second = 0;
297  ff_inlink_consume_frame(avctx->inputs[0], &in);
298  return ff_filter_frame(outlink, in);
299  }
300 
301  ctx->need_second = 1;
302  }
303  }
304 
305  if (ctx->xf[0] && ff_inlink_queued_frames(avctx->inputs[1]) > 0) {
306  ff_inlink_consume_frame(avctx->inputs[0], &ctx->xf[0]);
307  ff_inlink_consume_frame(avctx->inputs[1], &ctx->xf[1]);
308 
309  ctx->last_pts = ctx->xf[1]->pts;
310  ctx->pts = ctx->xf[0]->pts;
311  if (ctx->xf[0]->pts - (ctx->first_pts + ctx->offset_pts) > ctx->duration_pts)
312  ctx->xfade_is_over = 1;
313  ret = xfade_frame(avctx, ctx->xf[0], ctx->xf[1]);
314  av_frame_free(&ctx->xf[0]);
315  av_frame_free(&ctx->xf[1]);
316  return ret;
317  }
318 
319  if (ff_inlink_queued_frames(avctx->inputs[0]) > 0 &&
320  ff_inlink_queued_frames(avctx->inputs[1]) > 0) {
321  ff_filter_set_ready(avctx, 100);
322  return 0;
323  }
324 
325  if (ff_outlink_frame_wanted(outlink)) {
326  if (!ctx->eof[0] && ff_outlink_get_status(avctx->inputs[0])) {
327  ctx->eof[0] = 1;
328  ctx->xfade_is_over = 1;
329  }
330  if (!ctx->eof[1] && ff_outlink_get_status(avctx->inputs[1])) {
331  ctx->eof[1] = 1;
332  }
333  if (!ctx->eof[0] && !ctx->xf[0])
334  ff_inlink_request_frame(avctx->inputs[0]);
335  if (!ctx->eof[1] && (ctx->need_second || ctx->eof[0]))
336  ff_inlink_request_frame(avctx->inputs[1]);
337  if (ctx->eof[0] && ctx->eof[1] && (
338  ff_inlink_queued_frames(avctx->inputs[0]) <= 0 ||
339  ff_inlink_queued_frames(avctx->inputs[1]) <= 0))
341  return 0;
342  }
343 
344  return FFERROR_NOT_READY;
345 }
346 
348 {
349  XFadeOpenCLContext *ctx = avctx->priv;
350  cl_int cle;
351 
352  if (ctx->kernel) {
353  cle = clReleaseKernel(ctx->kernel);
354  if (cle != CL_SUCCESS)
355  av_log(avctx, AV_LOG_ERROR, "Failed to release "
356  "kernel: %d.\n", cle);
357  }
358 
359  if (ctx->command_queue) {
360  cle = clReleaseCommandQueue(ctx->command_queue);
361  if (cle != CL_SUCCESS)
362  av_log(avctx, AV_LOG_ERROR, "Failed to release "
363  "command queue: %d.\n", cle);
364  }
365 
367 }
368 
370 {
371  XFadeOpenCLContext *s = inlink->dst->priv;
372 
373  return s->xfade_is_over || !s->need_second ?
376 }
377 
378 #define OFFSET(x) offsetof(XFadeOpenCLContext, x)
379 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
380 
381 static const AVOption xfade_opencl_options[] = {
382  { "transition", "set cross fade transition", OFFSET(transition), AV_OPT_TYPE_INT, {.i64=1}, 0, NB_TRANSITIONS-1, FLAGS, "transition" },
383  { "custom", "custom transition", 0, AV_OPT_TYPE_CONST, {.i64=CUSTOM}, 0, 0, FLAGS, "transition" },
384  { "fade", "fade transition", 0, AV_OPT_TYPE_CONST, {.i64=FADE}, 0, 0, FLAGS, "transition" },
385  { "wipeleft", "wipe left transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPELEFT}, 0, 0, FLAGS, "transition" },
386  { "wiperight", "wipe right transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPERIGHT}, 0, 0, FLAGS, "transition" },
387  { "wipeup", "wipe up transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPEUP}, 0, 0, FLAGS, "transition" },
388  { "wipedown", "wipe down transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPEDOWN}, 0, 0, FLAGS, "transition" },
389  { "slideleft", "slide left transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDELEFT}, 0, 0, FLAGS, "transition" },
390  { "slideright", "slide right transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDERIGHT}, 0, 0, FLAGS, "transition" },
391  { "slideup", "slide up transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDEUP}, 0, 0, FLAGS, "transition" },
392  { "slidedown", "slide down transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDEDOWN}, 0, 0, FLAGS, "transition" },
393  { "source", "set OpenCL program source file for custom transition", OFFSET(source_file), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS },
394  { "kernel", "set kernel name in program file for custom transition", OFFSET(kernel_name), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS },
395  { "duration", "set cross fade duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=1000000}, 0, 60000000, FLAGS },
396  { "offset", "set cross fade start relative to first input stream", OFFSET(offset), AV_OPT_TYPE_DURATION, {.i64=0}, INT64_MIN, INT64_MAX, FLAGS },
397  { NULL }
398 };
399 
400 AVFILTER_DEFINE_CLASS(xfade_opencl);
401 
403  {
404  .name = "main",
405  .type = AVMEDIA_TYPE_VIDEO,
406  .get_video_buffer = get_video_buffer,
407  .config_props = &ff_opencl_filter_config_input,
408  },
409  {
410  .name = "xfade",
411  .type = AVMEDIA_TYPE_VIDEO,
412  .get_video_buffer = get_video_buffer,
413  .config_props = &ff_opencl_filter_config_input,
414  },
415  { NULL }
416 };
417 
419  {
420  .name = "default",
421  .type = AVMEDIA_TYPE_VIDEO,
422  .config_props = &xfade_opencl_config_output,
423  },
424  { NULL }
425 };
426 
428  .name = "xfade_opencl",
429  .description = NULL_IF_CONFIG_SMALL("Cross fade one video with another video."),
430  .priv_size = sizeof(XFadeOpenCLContext),
431  .priv_class = &xfade_opencl_class,
438  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
439 };
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
status
they must not be accessed directly The fifo field contains the frames that are queued in the input for processing by the filter The status_in and status_out fields contains the queued status(EOF or error) of the link
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
FLAGS
#define FLAGS
Definition: vf_xfade_opencl.c:379
AVERROR
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
opt.h
CL_SET_KERNEL_ARG
#define CL_SET_KERNEL_ARG(kernel, arg_num, type, arg)
set argument to specific Kernel.
Definition: opencl.h:61
FF_FILTER_FLAG_HWFRAME_AWARE
#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:339
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:978
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2541
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:55
FFERROR_NOT_READY
return FFERROR_NOT_READY
Definition: filter_design.txt:204
AV_TIME_BASE_Q
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
output
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
Definition: filter_design.txt:225
inlink
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
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:111
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:396
w
uint8_t w
Definition: llviddspenc.c:39
opencl.h
AVOption
AVOption.
Definition: opt.h:248
b
#define b
Definition: input.c:41
xfade_opencl_activate
static int xfade_opencl_activate(AVFilterContext *avctx)
Definition: vf_xfade_opencl.c:259
AV_OPT_TYPE_DURATION
@ AV_OPT_TYPE_DURATION
Definition: opt.h:239
ff_opencl_filter_load_program
int ff_opencl_filter_load_program(AVFilterContext *avctx, const char **program_source_array, int nb_strings)
Load a new OpenCL program from strings in memory.
Definition: opencl.c:171
SLIDEUP
@ SLIDEUP
Definition: vf_xfade_opencl.c:40
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
SLIDELEFT
@ SLIDELEFT
Definition: vf_xfade_opencl.c:38
video.h
XFadeOpenCLContext::first_pts
int64_t first_pts
Definition: vf_xfade_opencl.c:62
XFadeOpenCLContext::xfade_is_over
int xfade_is_over
Definition: vf_xfade_opencl.c:65
ff_inlink_consume_frame
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
Definition: avfilter.c:1376
ff_default_get_video_buffer
AVFrame * ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
Definition: video.c:44
ff_opencl_filter_work_size_from_image
int ff_opencl_filter_work_size_from_image(AVFilterContext *avctx, size_t *work_size, AVFrame *frame, int plane, int block_alignment)
Find the work size needed needed for a given plane of an image.
Definition: opencl.c:278
FF_FILTER_FORWARD_STATUS_BACK_ALL
#define FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, filter)
Forward the status on an output link to all input links.
Definition: filters.h:212
XFadeOpenCLContext::xf
AVFrame * xf[2]
Definition: vf_xfade_opencl.c:68
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:348
XFadeOpenCLContext::offset
int64_t offset
Definition: vf_xfade_opencl.c:52
fail
#define fail()
Definition: checkasm.h:134
xfade_opencl_uninit
static av_cold void xfade_opencl_uninit(AVFilterContext *avctx)
Definition: vf_xfade_opencl.c:347
FADE
@ FADE
Definition: vf_xfade_opencl.c:33
XFadeOpenCLContext::need_second
int need_second
Definition: vf_xfade_opencl.c:66
pts
static int64_t pts
Definition: transcode_aac.c:652
XFadeOpenCLContext
Definition: vf_xfade_opencl.c:45
AVRational::num
int num
Numerator.
Definition: rational.h:59
ff_opencl_filter_config_output
int ff_opencl_filter_config_output(AVFilterLink *outlink)
Create a suitable hardware frames context for the output.
Definition: opencl.c:96
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
AVFilterContext::input_pads
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:340
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:181
av_cold
#define av_cold
Definition: attributes.h:90
inputs
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
Definition: filter_design.txt:243
SLIDEDOWN
@ SLIDEDOWN
Definition: vf_xfade_opencl.c:41
duration
int64_t duration
Definition: movenc.c:64
ff_outlink_set_status
static void ff_outlink_set_status(AVFilterLink *link, int status, int64_t pts)
Set the status field of a link from the source filter.
Definition: filters.h:189
ff_inlink_request_frame
void ff_inlink_request_frame(AVFilterLink *link)
Mark that a frame is wanted on the link.
Definition: avfilter.c:1502
s
#define s(width, name)
Definition: cbs_vp9.c:257
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
filters.h
WIPERIGHT
@ WIPERIGHT
Definition: vf_xfade_opencl.c:35
ctx
AVFormatContext * ctx
Definition: movenc.c:48
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
CUSTOM
@ CUSTOM
Definition: vf_xfade_opencl.c:32
OFFSET
#define OFFSET(x)
Definition: vf_xfade_opencl.c:378
f
#define f(width, name)
Definition: cbs_vp9.c:255
XFadeOpenCLContext::kernel_name
const char * kernel_name
Definition: vf_xfade_opencl.c:50
ff_inlink_peek_frame
AVFrame * ff_inlink_peek_frame(AVFilterLink *link, size_t idx)
Access a frame in the link fifo without consuming it.
Definition: avfilter.c:1415
NULL
#define NULL
Definition: coverity.c:32
AVHWFramesContext::sw_format
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
Definition: hwcontext.h:222
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:536
AVPixFmtDescriptor::nb_components
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:72
activate
filter_frame For filters that do not use the activate() callback
AVFilterContext::inputs
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:341
av_clipf
#define av_clipf
Definition: common.h:170
AVComponentDescriptor::plane
int plane
Which of the 4 planes contains the component.
Definition: pixdesc.h:35
SLIDERIGHT
@ SLIDERIGHT
Definition: vf_xfade_opencl.c:39
ff_inlink_acknowledge_status
int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
Test and acknowledge the change of status on the link.
Definition: avfilter.c:1331
ff_inlink_queued_frames
size_t ff_inlink_queued_frames(AVFilterLink *link)
Get the number of frames available on the link.
Definition: avfilter.c:1346
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
XFadeOpenCLContext::initialised
int initialised
Definition: vf_xfade_opencl.c:54
XFadeOpenCLContext::last_pts
int64_t last_pts
Definition: vf_xfade_opencl.c:63
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
NB_TRANSITIONS
@ NB_TRANSITIONS
Definition: vf_xfade_opencl.c:42
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
xfade_opencl_outputs
static const AVFilterPad xfade_opencl_outputs[]
Definition: vf_xfade_opencl.c:418
offset
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 offset
Definition: writing_filters.txt:86
opencl_source.h
ff_opencl_filter_config_input
int ff_opencl_filter_config_input(AVFilterLink *inlink)
Check that the input link contains a suitable hardware frames context and extract the device from it.
Definition: opencl.c:60
ff_null_get_video_buffer
AVFrame * ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
Definition: video.c:39
internal.h
xfade_opencl_load
static int xfade_opencl_load(AVFilterContext *avctx, enum AVPixelFormat main_format, enum AVPixelFormat xfade_format)
Definition: vf_xfade_opencl.c:71
i
int i
Definition: input.c:407
log.h
WIPEDOWN
@ WIPEDOWN
Definition: vf_xfade_opencl.c:37
xfade_opencl_options
static const AVOption xfade_opencl_options[]
Definition: vf_xfade_opencl.c:381
XFadeOpenCLContext::eof
int eof[2]
Definition: vf_xfade_opencl.c:67
XFadeOpenCLContext::transition
int transition
Definition: vf_xfade_opencl.c:48
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
AVFilter
Filter definition.
Definition: avfilter.h:145
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
ff_opencl_filter_init
int ff_opencl_filter_init(AVFilterContext *avctx)
Initialise an OpenCL filter context.
Definition: opencl.c:147
ret
ret
Definition: filter_design.txt:187
XFadeOpenCLContext::pts
int64_t pts
Definition: vf_xfade_opencl.c:64
XFadeOpenCLContext::kernel
cl_kernel kernel
Definition: vf_xfade_opencl.c:55
XFadeOpenCLContext::ocf
OpenCLFilterContext ocf
Definition: vf_xfade_opencl.c:46
XFadeOpenCLContext::source_file
const char * source_file
Definition: vf_xfade_opencl.c:49
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
ff_opencl_filter_load_program_from_file
int ff_opencl_filter_load_program_from_file(AVFilterContext *avctx, const char *filename)
Load a new OpenCL program from a file.
Definition: opencl.c:219
ff_vf_xfade_opencl
const AVFilter ff_vf_xfade_opencl
Definition: vf_xfade_opencl.c:427
XFadeOpenCLContext::duration
int64_t duration
Definition: vf_xfade_opencl.c:51
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:106
OpenCLFilterContext
Definition: opencl.h:36
ff_opencl_filter_uninit
void ff_opencl_filter_uninit(AVFilterContext *avctx)
Uninitialise an OpenCL filter context.
Definition: opencl.c:156
AVFormatContext::duration
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1199
ff_outlink_get_status
int ff_outlink_get_status(AVFilterLink *link)
Get the status on an output link.
Definition: avfilter.c:1525
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
get_video_buffer
static AVFrame * get_video_buffer(AVFilterLink *inlink, int w, int h)
Definition: vf_xfade_opencl.c:369
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
mem.h
XFadeOpenCLContext::command_queue
cl_command_queue command_queue
Definition: vf_xfade_opencl.c:56
XFadeOpenCLContext::duration_pts
int64_t duration_pts
Definition: vf_xfade_opencl.c:60
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:70
XFadeTransitions
XFadeTransitions
Definition: vf_xfade.c:31
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: aeval.c:244
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
XFadeOpenCLContext::nb_planes
int nb_planes
Definition: vf_xfade_opencl.c:58
CL_FAIL_ON_ERROR
#define CL_FAIL_ON_ERROR(errcode,...)
A helper macro to handle OpenCL errors.
Definition: opencl.h:74
xfade_frame
static int xfade_frame(AVFilterContext *avctx, AVFrame *a, AVFrame *b)
Definition: vf_xfade_opencl.c:139
uninit
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
h
h
Definition: vp9dsp_template.c:2038
ff_outlink_frame_wanted
the definition of that something depends on the semantic of the filter The callback must examine the status of the filter s links and proceed accordingly The status of output links is stored in the status_in and status_out fields and tested by the ff_outlink_frame_wanted() function. If this function returns true
XFadeOpenCLContext::offset_pts
int64_t offset_pts
Definition: vf_xfade_opencl.c:61
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
xfade_opencl_config_output
static int xfade_opencl_config_output(AVFilterLink *outlink)
Definition: vf_xfade_opencl.c:214
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(xfade_opencl)
ff_opencl_source_xfade
const char * ff_opencl_source_xfade
WIPELEFT
@ WIPELEFT
Definition: vf_xfade_opencl.c:34
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
WIPEUP
@ WIPEUP
Definition: vf_xfade_opencl.c:36
ff_opencl_filter_query_formats
int ff_opencl_filter_query_formats(AVFilterContext *avctx)
Return that all inputs and outputs support only AV_PIX_FMT_OPENCL.
Definition: opencl.c:28
ff_filter_set_ready
void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
Mark a filter ready and schedule it for activation.
Definition: avfilter.c:186
xfade_opencl_inputs
static const AVFilterPad xfade_opencl_inputs[]
Definition: vf_xfade_opencl.c:402
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:345