FFmpeg
vf_overlay_vaapi.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 #include <string.h>
19 
20 #include "libavutil/opt.h"
21 #include "libavutil/pixdesc.h"
22 
23 #include "avfilter.h"
24 #include "framesync.h"
25 #include "internal.h"
26 #include "vaapi_vpp.h"
27 #include "video.h"
28 #include "libavutil/eval.h"
29 
30 enum var_name {
40 };
41 
42 typedef struct OverlayVAAPIContext {
43  VAAPIVPPContext vpp_ctx; /**< must be the first field */
45 
47  char *overlay_ox;
48  char *overlay_oy;
49  char *overlay_ow;
50  char *overlay_oh;
51  int ox;
52  int oy;
53  int ow;
54  int oh;
55  float alpha;
56  unsigned int blend_flags;
57  float blend_alpha;
59 
60 static const char *const var_names[] = {
61  "main_w", "W", /* input width of the main layer */
62  "main_h", "H", /* input height of the main layer */
63  "overlay_iw", /* input width of the overlay layer */
64  "overlay_ih", /* input height of the overlay layer */
65  "overlay_x", "x", /* x position of the overlay layer inside of main */
66  "overlay_y", "y", /* y position of the overlay layer inside of main */
67  "overlay_w", "w", /* output width of overlay layer */
68  "overlay_h", "h", /* output height of overlay layer */
69  NULL
70 };
71 
72 static int eval_expr(AVFilterContext *avctx)
73 {
74  OverlayVAAPIContext *ctx = avctx->priv;
75  double *var_values = ctx->var_values;
76  int ret = 0;
77  AVExpr *ox_expr = NULL, *oy_expr = NULL;
78  AVExpr *ow_expr = NULL, *oh_expr = NULL;
79 
80 #define PARSE_EXPR(e, s) {\
81  ret = av_expr_parse(&(e), s, var_names, NULL, NULL, NULL, NULL, 0, ctx); \
82  if (ret < 0) {\
83  av_log(ctx, AV_LOG_ERROR, "Error when parsing '%s'.\n", s);\
84  goto release;\
85  }\
86 }
87  PARSE_EXPR(ox_expr, ctx->overlay_ox)
88  PARSE_EXPR(oy_expr, ctx->overlay_oy)
89  PARSE_EXPR(ow_expr, ctx->overlay_ow)
90  PARSE_EXPR(oh_expr, ctx->overlay_oh)
91 #undef PASS_EXPR
92 
93  var_values[VAR_OVERLAY_W] =
94  var_values[VAR_OW] = av_expr_eval(ow_expr, var_values, NULL);
95  var_values[VAR_OVERLAY_H] =
96  var_values[VAR_OH] = av_expr_eval(oh_expr, var_values, NULL);
97 
98  /* calc again in case ow is relative to oh */
99  var_values[VAR_OVERLAY_W] =
100  var_values[VAR_OW] = av_expr_eval(ow_expr, var_values, NULL);
101 
102  var_values[VAR_OVERLAY_X] =
103  var_values[VAR_OX] = av_expr_eval(ox_expr, var_values, NULL);
104  var_values[VAR_OVERLAY_Y] =
105  var_values[VAR_OY] = av_expr_eval(oy_expr, var_values, NULL);
106 
107  /* calc again in case ox is relative to oy */
108  var_values[VAR_OVERLAY_X] =
109  var_values[VAR_OX] = av_expr_eval(ox_expr, var_values, NULL);
110 
111  /* calc overlay_w and overlay_h again incase relative to ox,oy */
112  var_values[VAR_OVERLAY_W] =
113  var_values[VAR_OW] = av_expr_eval(ow_expr, var_values, NULL);
114  var_values[VAR_OVERLAY_H] =
115  var_values[VAR_OH] = av_expr_eval(oh_expr, var_values, NULL);
116  var_values[VAR_OVERLAY_W] =
117  var_values[VAR_OW] = av_expr_eval(ow_expr, var_values, NULL);
118 
119 release:
120  av_expr_free(ox_expr);
121  av_expr_free(oy_expr);
122  av_expr_free(ow_expr);
123  av_expr_free(oh_expr);
124 
125  return ret;
126 }
127 
129 {
130  VAAPIVPPContext *vpp_ctx = avctx->priv;
131  VAStatus vas;
132  int support_flag;
133  VAProcPipelineCaps pipeline_caps;
134 
135  memset(&pipeline_caps, 0, sizeof(pipeline_caps));
136  vas = vaQueryVideoProcPipelineCaps(vpp_ctx->hwctx->display,
137  vpp_ctx->va_context,
138  NULL, 0,
139  &pipeline_caps);
140  if (vas != VA_STATUS_SUCCESS) {
141  av_log(avctx, AV_LOG_ERROR, "Failed to query pipeline "
142  "caps: %d (%s).\n", vas, vaErrorStr(vas));
143  return AVERROR(EIO);
144  }
145 
146  if (!pipeline_caps.blend_flags) {
147  av_log(avctx, AV_LOG_ERROR, "VAAPI driver doesn't support overlay\n");
148  return AVERROR(EINVAL);
149  }
150 
151  support_flag = pipeline_caps.blend_flags & VA_BLEND_GLOBAL_ALPHA;
152  if (!support_flag) {
153  av_log(avctx, AV_LOG_ERROR, "VAAPI driver doesn't support global alpha blending\n");
154  return AVERROR(EINVAL);
155  }
156 
157  return 0;
158 }
159 
161 {
162  AVFilterContext *avctx = fs->parent;
163  AVFilterLink *outlink = avctx->outputs[0];
164  OverlayVAAPIContext *ctx = avctx->priv;
165  VAAPIVPPContext *vpp_ctx = avctx->priv;
166  AVFrame *input_main, *input_overlay;
167  AVFrame *output;
168  VAProcPipelineParameterBuffer params[2];
169  VABlendState blend_state = { 0 }; /**< Blend State */
170  VARectangle overlay_region, output_region;
171  int err;
172 
173  err = ff_framesync_get_frame(fs, 0, &input_main, 0);
174  if (err < 0)
175  return err;
176  err = ff_framesync_get_frame(fs, 1, &input_overlay, 0);
177  if (err < 0)
178  return err;
179 
180  av_log(avctx, AV_LOG_DEBUG, "Filter main: %s, %ux%u (%"PRId64").\n",
181  av_get_pix_fmt_name(input_main->format),
182  input_main->width, input_main->height, input_main->pts);
183 
184  if (vpp_ctx->va_context == VA_INVALID_ID)
185  return AVERROR(EINVAL);
186 
187  output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
188  if (!output) {
189  err = AVERROR(ENOMEM);
190  goto fail;
191  }
192 
193  err = av_frame_copy_props(output, input_main);
194  if (err < 0)
195  goto fail;
196 
197  err = ff_vaapi_vpp_init_params(avctx, &params[0],
198  input_main, output);
199  if (err < 0)
200  goto fail;
201 
202  output_region = (VARectangle) {
203  .x = 0,
204  .y = 0,
205  .width = output->width,
206  .height = output->height,
207  };
208 
209  params[0].output_region = &output_region;
210  params[0].output_background_color = VAAPI_VPP_BACKGROUND_BLACK;
211 
212  if (input_overlay) {
213  av_log(avctx, AV_LOG_DEBUG, "Filter overlay: %s, %ux%u (%"PRId64").\n",
214  av_get_pix_fmt_name(input_overlay->format),
215  input_overlay->width, input_overlay->height, input_overlay->pts);
216 
217  overlay_region = (VARectangle) {
218  .x = ctx->ox,
219  .y = ctx->oy,
220  .width = ctx->ow ? ctx->ow : input_overlay->width,
221  .height = ctx->oh ? ctx->oh : input_overlay->height,
222  };
223 
224  if (overlay_region.x + overlay_region.width > input_main->width ||
225  overlay_region.y + overlay_region.height > input_main->height) {
227  "The overlay image exceeds the scope of the main image, "
228  "will crop the overlay image according based on the main image.\n");
229  }
230 
231  memcpy(&params[1], &params[0], sizeof(params[0]));
232 
233  blend_state.flags = ctx->blend_flags;
234  blend_state.global_alpha = ctx->blend_alpha;
235  params[1].blend_state = &blend_state;
236 
237  params[1].surface = (VASurfaceID)(uintptr_t)input_overlay->data[3];
238  params[1].surface_region = NULL;
239  params[1].output_region = &overlay_region;
240  }
241 
242  err = ff_vaapi_vpp_render_pictures(avctx, params, input_overlay ? 2 : 1, output);
243  if (err < 0)
244  goto fail;
245 
246  av_log(avctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
247  av_get_pix_fmt_name(output->format),
248  output->width, output->height, output->pts);
249 
250  return ff_filter_frame(outlink, output);
251 
252 fail:
254  return err;
255 }
256 
258 {
260  const AVPixFmtDescriptor *desc;
261  AVHWFramesContext *fctx;
262 
263  if (link->format == AV_PIX_FMT_VAAPI) {
265  pix_fmt = fctx->sw_format;
266  }
267 
269  if (!desc)
270  return 0;
271 
272  return !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
273 }
274 
276 {
277  AVFilterContext *avctx = inlink->dst;
278  OverlayVAAPIContext *ctx = avctx->priv;
279 
280  ctx->var_values[VAR_MAIN_IW] =
281  ctx->var_values[VAR_MW] = inlink->w;
282  ctx->var_values[VAR_MAIN_IH] =
283  ctx->var_values[VAR_MH] = inlink->h;
284 
286 }
287 
289 {
290  AVFilterContext *avctx = inlink->dst;
291  OverlayVAAPIContext *ctx = avctx->priv;
292  int ret;
293 
294  ctx->var_values[VAR_OVERLAY_IW] = inlink->w;
295  ctx->var_values[VAR_OVERLAY_IH] = inlink->h;
296 
297  ret = eval_expr(avctx);
298  if (ret < 0)
299  return ret;
300 
301  ctx->ox = (int)ctx->var_values[VAR_OX];
302  ctx->oy = (int)ctx->var_values[VAR_OY];
303  ctx->ow = (int)ctx->var_values[VAR_OW];
304  ctx->oh = (int)ctx->var_values[VAR_OH];
305 
306  ctx->blend_flags = 0;
307  ctx->blend_alpha = 1.0f;
308 
309  if (ctx->alpha < 1.0f) {
310  ctx->blend_flags |= VA_BLEND_GLOBAL_ALPHA;
311  ctx->blend_alpha = ctx->alpha;
312  }
313 
315  ctx->blend_flags |= VA_BLEND_PREMULTIPLIED_ALPHA;
316 
317  return 0;
318 }
319 
321 {
322  AVFilterContext *avctx = outlink->src;
323  OverlayVAAPIContext *ctx = avctx->priv;
324  VAAPIVPPContext *vpp_ctx = avctx->priv;
325  int err;
326 
327  outlink->time_base = avctx->inputs[0]->time_base;
328  vpp_ctx->output_width = avctx->inputs[0]->w;
329  vpp_ctx->output_height = avctx->inputs[0]->h;
330 
331  err = ff_vaapi_vpp_config_output(outlink);
332  if (err < 0)
333  return err;
334 
336  if (err < 0)
337  return err;
338 
339  err = ff_framesync_init_dualinput(&ctx->fs, avctx);
340  if (err < 0)
341  return err;
342 
343  ctx->fs.on_event = overlay_vaapi_blend;
344  ctx->fs.time_base = outlink->time_base;
345 
346  return ff_framesync_configure(&ctx->fs);
347 }
348 
350 {
351  VAAPIVPPContext *vpp_ctx = avctx->priv;
352 
353  ff_vaapi_vpp_ctx_init(avctx);
354  vpp_ctx->output_format = AV_PIX_FMT_NONE;
355 
356  return 0;
357 }
358 
360 {
361  OverlayVAAPIContext *ctx = avctx->priv;
362 
363  return ff_framesync_activate(&ctx->fs);
364 }
365 
367 {
368  OverlayVAAPIContext *ctx = avctx->priv;
369 
370  ff_framesync_uninit(&ctx->fs);
372 }
373 
374 #define OFFSET(x) offsetof(OverlayVAAPIContext, x)
375 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
376 static const AVOption overlay_vaapi_options[] = {
377  { "x", "Overlay x position", OFFSET(overlay_ox), AV_OPT_TYPE_STRING, { .str="0"}, 0, 255, .flags = FLAGS},
378  { "y", "Overlay y position", OFFSET(overlay_oy), AV_OPT_TYPE_STRING, { .str="0"}, 0, 255, .flags = FLAGS},
379  { "w", "Overlay width", OFFSET(overlay_ow), AV_OPT_TYPE_STRING, { .str="overlay_iw"}, 0, 255, .flags = FLAGS},
380  { "h", "Overlay height", OFFSET(overlay_oh), AV_OPT_TYPE_STRING, { .str="overlay_ih*w/overlay_iw"}, 0, 255, .flags = FLAGS},
381  { "alpha", "Overlay global alpha", OFFSET(alpha), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 0.0, 1.0, .flags = FLAGS },
382  { "eof_action", "Action to take when encountering EOF from secondary input ",
383  OFFSET(fs.opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT },
384  EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, .unit = "eof_action" },
385  { "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, .unit = "eof_action" },
386  { "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, .unit = "eof_action" },
387  { "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, .unit = "eof_action" },
388  { "shortest", "force termination when the shortest input terminates", OFFSET(fs.opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
389  { "repeatlast", "repeat overlay of the last overlay frame", OFFSET(fs.opt_repeatlast), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
390  { NULL },
391 };
392 
394 
396  {
397  .name = "main",
398  .type = AVMEDIA_TYPE_VIDEO,
399  .config_props = overlay_vaapi_config_input_main,
400  },
401  {
402  .name = "overlay",
403  .type = AVMEDIA_TYPE_VIDEO,
404  .config_props = overlay_vaapi_config_input_overlay,
405  },
406 };
407 
409  {
410  .name = "default",
411  .type = AVMEDIA_TYPE_VIDEO,
412  .config_props = &overlay_vaapi_config_output,
413  },
414 };
415 
417  .name = "overlay_vaapi",
418  .description = NULL_IF_CONFIG_SMALL("Overlay one video on top of another"),
419  .priv_size = sizeof(OverlayVAAPIContext),
420  .priv_class = &overlay_vaapi_class,
424  .preinit = overlay_vaapi_framesync_preinit,
428  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
429 };
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:112
ff_vaapi_vpp_ctx_init
void ff_vaapi_vpp_ctx_init(AVFilterContext *avctx)
Definition: vaapi_vpp.c:715
OFFSET
#define OFFSET(x)
Definition: vf_overlay_vaapi.c:374
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:137
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:71
OverlayVAAPIContext::alpha
float alpha
Definition: vf_overlay_vaapi.c:55
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
var_name
var_name
Definition: noise.c:47
OverlayVAAPIContext::overlay_ox
char * overlay_ox
Definition: vf_overlay_vaapi.c:47
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:307
FLAGS
#define FLAGS
Definition: vf_overlay_vaapi.c:375
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:351
OverlayVAAPIContext::var_values
double var_values[VAR_VARS_NB]
Definition: vf_overlay_vaapi.c:46
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1015
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2965
AVBufferRef::data
uint8_t * data
The data buffer.
Definition: buffer.h:90
OverlayVAAPIContext::vpp_ctx
VAAPIVPPContext vpp_ctx
must be the first field
Definition: vf_overlay_vaapi.c:43
ff_framesync_get_frame
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:270
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:160
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:374
pixdesc.h
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:486
AVFrame::width
int width
Definition: frame.h:446
overlay_vaapi_options
static const AVOption overlay_vaapi_options[]
Definition: vf_overlay_vaapi.c:376
AVOption
AVOption.
Definition: opt.h:357
EOF_ACTION_ENDALL
@ EOF_ACTION_ENDALL
Definition: framesync.h:28
overlay_vaapi_outputs
static const AVFilterPad overlay_vaapi_outputs[]
Definition: vf_overlay_vaapi.c:408
VAR_OVERLAY_IW
@ VAR_OVERLAY_IW
Definition: vf_overlay_vaapi.c:33
ff_vaapi_vpp_render_pictures
int ff_vaapi_vpp_render_pictures(AVFilterContext *avctx, VAProcPipelineParameterBuffer *params_list, int cout, AVFrame *output_frame)
Definition: vaapi_vpp.c:640
AVVAAPIDeviceContext::display
VADisplay display
The VADisplay handle, to be filled by the user.
Definition: hwcontext_vaapi.h:72
preinit
static av_cold int preinit(AVFilterContext *ctx)
Definition: af_aresample.c:49
var_names
static const char *const var_names[]
Definition: vf_overlay_vaapi.c:60
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
FFFrameSync
Frame sync structure.
Definition: framesync.h:168
video.h
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:395
overlay_vaapi_build_filter_params
static int overlay_vaapi_build_filter_params(AVFilterContext *avctx)
Definition: vf_overlay_vaapi.c:128
OverlayVAAPIContext::ow
int ow
Definition: vf_overlay_vaapi.c:53
eval_expr
static int eval_expr(AVFilterContext *avctx)
Definition: vf_overlay_vaapi.c:72
VAR_OVERLAY_X
@ VAR_OVERLAY_X
Definition: vf_overlay_vaapi.c:35
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:422
fail
#define fail()
Definition: checkasm.h:186
overlay_vaapi_config_input_overlay
static int overlay_vaapi_config_input_overlay(AVFilterLink *inlink)
Definition: vf_overlay_vaapi.c:288
PARSE_EXPR
#define PARSE_EXPR(e, s)
overlay_vaapi_init
static av_cold int overlay_vaapi_init(AVFilterContext *avctx)
Definition: vf_overlay_vaapi.c:349
OverlayVAAPIContext::ox
int ox
Definition: vf_overlay_vaapi.c:51
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:358
OverlayVAAPIContext::blend_flags
unsigned int blend_flags
Definition: vf_overlay_vaapi.c:56
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
ff_vf_overlay_vaapi
const AVFilter ff_vf_overlay_vaapi
Definition: vf_overlay_vaapi.c:416
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
OverlayVAAPIContext::blend_alpha
float blend_alpha
Definition: vf_overlay_vaapi.c:57
overlay_vaapi_inputs
static const AVFilterPad overlay_vaapi_inputs[]
Definition: vf_overlay_vaapi.c:395
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demux_decode.c:41
OverlayVAAPIContext::oh
int oh
Definition: vf_overlay_vaapi.c:54
overlay_vaapi_config_input_main
static int overlay_vaapi_config_input_main(AVFilterLink *inlink)
Definition: vf_overlay_vaapi.c:275
VAAPIVPPContext::output_width
int output_width
Definition: vaapi_vpp.h:53
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
AV_PIX_FMT_FLAG_ALPHA
#define AV_PIX_FMT_FLAG_ALPHA
The pixel format has an alpha channel.
Definition: pixdesc.h:147
ctx
AVFormatContext * ctx
Definition: movenc.c:49
VAAPIVPPContext::output_format
enum AVPixelFormat output_format
Definition: vaapi_vpp.h:52
av_expr_eval
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:792
AVExpr
Definition: eval.c:158
VAR_MAIN_IH
@ VAR_MAIN_IH
Definition: vf_overlay_vaapi.c:32
VAAPIVPPContext::hwctx
AVVAAPIDeviceContext * hwctx
Definition: vaapi_vpp.h:41
EOF_ACTION_PASS
@ EOF_ACTION_PASS
Definition: framesync.h:29
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
link
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
Definition: filter_design.txt:23
overlay_vaapi_config_output
static int overlay_vaapi_config_output(AVFilterLink *outlink)
Definition: vf_overlay_vaapi.c:320
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:210
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:709
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:200
VAR_OX
@ VAR_OX
Definition: vf_overlay_vaapi.c:35
VAR_OVERLAY_H
@ VAR_OVERLAY_H
Definition: vf_overlay_vaapi.c:38
VAR_OW
@ VAR_OW
Definition: vf_overlay_vaapi.c:37
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:415
ff_vaapi_vpp_config_input
int ff_vaapi_vpp_config_input(AVFilterLink *inlink)
Definition: vaapi_vpp.c:75
OverlayVAAPIContext
Definition: vf_overlay_vaapi.c:42
ff_vaapi_vpp_ctx_uninit
void ff_vaapi_vpp_ctx_uninit(AVFilterContext *avctx)
Definition: vaapi_vpp.c:729
eval.h
vaapi_vpp.h
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:366
VAR_OVERLAY_W
@ VAR_OVERLAY_W
Definition: vf_overlay_vaapi.c:37
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:94
ff_framesync_init_dualinput
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:378
VAR_MAIN_IW
@ VAR_MAIN_IW
Definition: vf_overlay_vaapi.c:31
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:461
overlay_vaapi_uninit
static av_cold void overlay_vaapi_uninit(AVFilterContext *avctx)
Definition: vf_overlay_vaapi.c:366
AV_PIX_FMT_VAAPI
@ AV_PIX_FMT_VAAPI
Hardware acceleration through VA-API, data[3] contains a VASurfaceID.
Definition: pixfmt.h:126
VAR_MW
@ VAR_MW
Definition: vf_overlay_vaapi.c:31
internal.h
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:248
FILTER_SINGLE_PIXFMT
#define FILTER_SINGLE_PIXFMT(pix_fmt_)
Definition: internal.h:172
VAR_OVERLAY_IH
@ VAR_OVERLAY_IH
Definition: vf_overlay_vaapi.c:34
VAAPIVPPContext::output_height
int output_height
Definition: vaapi_vpp.h:54
uninit
static void uninit(AVBSFContext *ctx)
Definition: pcm_rechunk.c:68
VAR_MH
@ VAR_MH
Definition: vf_overlay_vaapi.c:32
VAR_OVERLAY_Y
@ VAR_OVERLAY_Y
Definition: vf_overlay_vaapi.c:36
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_overlay_vaapi.c:39
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
OverlayVAAPIContext::oy
int oy
Definition: vf_overlay_vaapi.c:52
VAR_OY
@ VAR_OY
Definition: vf_overlay_vaapi.c:36
AVFilter
Filter definition.
Definition: avfilter.h:166
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:115
ret
ret
Definition: filter_design.txt:187
VAAPIVPPContext
Definition: vaapi_vpp.h:38
OverlayVAAPIContext::overlay_oy
char * overlay_oy
Definition: vf_overlay_vaapi.c:48
VAAPIVPPContext::va_context
VAContextID va_context
Definition: vaapi_vpp.h:46
EOF_ACTION_REPEAT
@ EOF_ACTION_REPEAT
Definition: framesync.h:27
AVFrame::hw_frames_ctx
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame.
Definition: frame.h:725
AVFrame::height
int height
Definition: frame.h:446
framesync.h
ff_vaapi_vpp_config_output
int ff_vaapi_vpp_config_output(AVFilterLink *outlink)
Definition: vaapi_vpp.c:100
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:72
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:245
avfilter.h
overlay_vaapi_activate
static int overlay_vaapi_activate(AVFilterContext *avctx)
Definition: vf_overlay_vaapi.c:359
AVFilterContext
An instance of a filter.
Definition: avfilter.h:407
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
VAR_OH
@ VAR_OH
Definition: vf_overlay_vaapi.c:38
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
alpha
static const int16_t alpha[]
Definition: ilbcdata.h:55
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:261
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(overlay_vaapi, OverlayVAAPIContext, fs)
OverlayVAAPIContext::overlay_oh
char * overlay_oh
Definition: vf_overlay_vaapi.c:50
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
have_alpha_planar
static int have_alpha_planar(AVFilterLink *link)
Definition: vf_overlay_vaapi.c:257
overlay_vaapi_blend
static int overlay_vaapi_blend(FFFrameSync *fs)
Definition: vf_overlay_vaapi.c:160
OverlayVAAPIContext::overlay_ow
char * overlay_ow
Definition: vf_overlay_vaapi.c:49
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:358
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:249
VAAPI_VPP_BACKGROUND_BLACK
#define VAAPI_VPP_BACKGROUND_BLACK
Definition: vaapi_vpp.h:36
int
int
Definition: ffmpeg_filter.c:424
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:254
OverlayVAAPIContext::fs
FFFrameSync fs
Definition: vf_overlay_vaapi.c:44
av_get_pix_fmt_name
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:2885
ff_vaapi_vpp_init_params
int ff_vaapi_vpp_init_params(AVFilterContext *avctx, VAProcPipelineParameterBuffer *params, const AVFrame *input_frame, AVFrame *output_frame)
Definition: vaapi_vpp.c:534
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:419