FFmpeg
vf_overlay_qsv.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
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 /**
20  * @file
21  * A hardware accelerated overlay filter based on Intel Quick Sync Video VPP
22  */
23 
24 #include "libavutil/opt.h"
25 #include "libavutil/common.h"
26 #include "libavutil/pixdesc.h"
27 #include "libavutil/eval.h"
28 #include "libavutil/hwcontext.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/mathematics.h"
32 
33 #include "internal.h"
34 #include "avfilter.h"
35 #include "formats.h"
36 #include "video.h"
37 
38 #include "framesync.h"
39 #include "qsvvpp.h"
40 
41 #define MAIN 0
42 #define OVERLAY 1
43 
44 #define OFFSET(x) offsetof(QSVOverlayContext, x)
45 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
46 
47 enum var_name {
57 };
58 
59 typedef struct QSVOverlayContext {
60  const AVClass *class;
61 
65  mfxExtVPPComposite comp_conf;
67 
70 
72 
73 static const char *const var_names[] = {
74  "main_w", "W", /* input width of the main layer */
75  "main_h", "H", /* input height of the main layer */
76  "overlay_iw", /* input width of the overlay layer */
77  "overlay_ih", /* input height of the overlay layer */
78  "overlay_x", "x", /* x position of the overlay layer inside of main */
79  "overlay_y", "y", /* y position of the overlay layer inside of main */
80  "overlay_w", "w", /* output width of overlay layer */
81  "overlay_h", "h", /* output height of overlay layer */
82  NULL
83 };
84 
85 static const AVOption overlay_qsv_options[] = {
86  { "x", "Overlay x position", OFFSET(overlay_ox), AV_OPT_TYPE_STRING, { .str="0"}, 0, 255, .flags = FLAGS},
87  { "y", "Overlay y position", OFFSET(overlay_oy), AV_OPT_TYPE_STRING, { .str="0"}, 0, 255, .flags = FLAGS},
88  { "w", "Overlay width", OFFSET(overlay_ow), AV_OPT_TYPE_STRING, { .str="overlay_iw"}, 0, 255, .flags = FLAGS},
89  { "h", "Overlay height", OFFSET(overlay_oh), AV_OPT_TYPE_STRING, { .str="overlay_ih*w/overlay_iw"}, 0, 255, .flags = FLAGS},
90  { "alpha", "Overlay global alpha", OFFSET(overlay_alpha), AV_OPT_TYPE_INT, { .i64 = 255}, 0, 255, .flags = FLAGS},
91  { "eof_action", "Action to take when encountering EOF from secondary input ",
92  OFFSET(fs.opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT },
93  EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, "eof_action" },
94  { "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, "eof_action" },
95  { "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, "eof_action" },
96  { "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, "eof_action" },
97  { "shortest", "force termination when the shortest input terminates", OFFSET(fs.opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
98  { "repeatlast", "repeat overlay of the last overlay frame", OFFSET(fs.opt_repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
99  { NULL }
100 };
101 
103 
105 {
106  QSVOverlayContext *vpp = ctx->priv;
107  double *var_values = vpp->var_values;
108  int ret = 0;
109  AVExpr *ox_expr = NULL, *oy_expr = NULL;
110  AVExpr *ow_expr = NULL, *oh_expr = NULL;
111 
112 #define PASS_EXPR(e, s) {\
113  ret = av_expr_parse(&e, s, var_names, NULL, NULL, NULL, NULL, 0, ctx); \
114  if (ret < 0) {\
115  av_log(ctx, AV_LOG_ERROR, "Error when passing '%s'.\n", s);\
116  goto release;\
117  }\
118 }
119  PASS_EXPR(ox_expr, vpp->overlay_ox);
120  PASS_EXPR(oy_expr, vpp->overlay_oy);
121  PASS_EXPR(ow_expr, vpp->overlay_ow);
122  PASS_EXPR(oh_expr, vpp->overlay_oh);
123 #undef PASS_EXPR
124 
125  var_values[VAR_OVERLAY_W] =
126  var_values[VAR_OW] = av_expr_eval(ow_expr, var_values, NULL);
127  var_values[VAR_OVERLAY_H] =
128  var_values[VAR_OH] = av_expr_eval(oh_expr, var_values, NULL);
129 
130  /* calc again in case ow is relative to oh */
131  var_values[VAR_OVERLAY_W] =
132  var_values[VAR_OW] = av_expr_eval(ow_expr, var_values, NULL);
133 
134  var_values[VAR_OVERLAY_X] =
135  var_values[VAR_OX] = av_expr_eval(ox_expr, var_values, NULL);
136  var_values[VAR_OVERLAY_Y] =
137  var_values[VAR_OY] = av_expr_eval(oy_expr, var_values, NULL);
138 
139  /* calc again in case ox is relative to oy */
140  var_values[VAR_OVERLAY_X] =
141  var_values[VAR_OX] = av_expr_eval(ox_expr, var_values, NULL);
142 
143  /* calc overlay_w and overlay_h again incase relative to ox,oy */
144  var_values[VAR_OVERLAY_W] =
145  var_values[VAR_OW] = av_expr_eval(ow_expr, var_values, NULL);
146  var_values[VAR_OVERLAY_H] =
147  var_values[VAR_OH] = av_expr_eval(oh_expr, var_values, NULL);
148  var_values[VAR_OVERLAY_W] =
149  var_values[VAR_OW] = av_expr_eval(ow_expr, var_values, NULL);
150 
151 release:
152  av_expr_free(ox_expr);
153  av_expr_free(oy_expr);
154  av_expr_free(ow_expr);
155  av_expr_free(oh_expr);
156 
157  return ret;
158 }
159 
161 {
163  const AVPixFmtDescriptor *desc;
164  AVHWFramesContext *fctx;
165 
166  if (link->format == AV_PIX_FMT_QSV) {
168  pix_fmt = fctx->sw_format;
169  }
170 
172  if (!desc)
173  return 0;
174 
175  return !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
176 }
177 
179 {
180  AVFilterContext *ctx = inlink->dst;
181  QSVOverlayContext *vpp = ctx->priv;
182  mfxVPPCompInputStream *st = &vpp->comp_conf.InputStream[0];
183 
184  av_log(ctx, AV_LOG_DEBUG, "Input[%d] is of %s.\n", FF_INLINK_IDX(inlink),
185  av_get_pix_fmt_name(inlink->format));
186 
187  vpp->var_values[VAR_MAIN_iW] =
188  vpp->var_values[VAR_MW] = inlink->w;
189  vpp->var_values[VAR_MAIN_iH] =
190  vpp->var_values[VAR_MH] = inlink->h;
191 
192  st->DstX = 0;
193  st->DstY = 0;
194  st->DstW = inlink->w;
195  st->DstH = inlink->h;
196  st->GlobalAlphaEnable = 0;
197  st->PixelAlphaEnable = 0;
198 
199  return 0;
200 }
201 
203 {
204  AVFilterContext *ctx = inlink->dst;
205  QSVOverlayContext *vpp = ctx->priv;
206  mfxVPPCompInputStream *st = &vpp->comp_conf.InputStream[1];
207  int ret = 0;
208 
209  av_log(ctx, AV_LOG_DEBUG, "Input[%d] is of %s.\n", FF_INLINK_IDX(inlink),
210  av_get_pix_fmt_name(inlink->format));
211 
212  vpp->var_values[VAR_OVERLAY_iW] = inlink->w;
213  vpp->var_values[VAR_OVERLAY_iH] = inlink->h;
214 
215  ret = eval_expr(ctx);
216  if (ret < 0)
217  return ret;
218 
219  st->DstX = vpp->var_values[VAR_OX];
220  st->DstY = vpp->var_values[VAR_OY];
221  st->DstW = vpp->var_values[VAR_OW];
222  st->DstH = vpp->var_values[VAR_OH];
223  st->GlobalAlpha = vpp->overlay_alpha;
224  st->GlobalAlphaEnable = (st->GlobalAlpha < 255);
225  st->PixelAlphaEnable = have_alpha_planar(inlink);
226 
227  return 0;
228 }
229 
231 {
232  AVFilterContext *ctx = fs->parent;
233  QSVOverlayContext *s = fs->opaque;
234  AVFrame *frame = NULL;
235  int ret = 0, i;
236 
237  for (i = 0; i < ctx->nb_inputs; i++) {
239  if (ret == 0)
240  ret = ff_qsvvpp_filter_frame(s->qsv, ctx->inputs[i], frame);
241  if (ret < 0 && ret != AVERROR(EAGAIN))
242  break;
243  }
244 
245  return ret;
246 }
247 
249 {
250  QSVOverlayContext *s = ctx->priv;
251  int ret, i;
252 
253  s->fs.on_event = process_frame;
254  s->fs.opaque = s;
255  ret = ff_framesync_init(&s->fs, ctx, ctx->nb_inputs);
256  if (ret < 0)
257  return ret;
258 
259  for (i = 0; i < ctx->nb_inputs; i++) {
260  FFFrameSyncIn *in = &s->fs.in[i];
261  in->before = EXT_STOP;
262  in->after = EXT_INFINITY;
263  in->sync = i ? 1 : 2;
264  in->time_base = ctx->inputs[i]->time_base;
265  }
266 
267  return ff_framesync_configure(&s->fs);
268 }
269 
270 static int config_output(AVFilterLink *outlink)
271 {
272  AVFilterContext *ctx = outlink->src;
273  QSVOverlayContext *vpp = ctx->priv;
274  AVFilterLink *in0 = ctx->inputs[0];
275  AVFilterLink *in1 = ctx->inputs[1];
276  int ret;
277 
278  av_log(ctx, AV_LOG_DEBUG, "Output is of %s.\n", av_get_pix_fmt_name(outlink->format));
279  if ((in0->format == AV_PIX_FMT_QSV && in1->format != AV_PIX_FMT_QSV) ||
280  (in0->format != AV_PIX_FMT_QSV && in1->format == AV_PIX_FMT_QSV)) {
281  av_log(ctx, AV_LOG_ERROR, "Mixing hardware and software pixel formats is not supported.\n");
282  return AVERROR(EINVAL);
283  } else if (in0->format == AV_PIX_FMT_QSV) {
286 
287  if (hw_frame0->device_ctx != hw_frame1->device_ctx) {
288  av_log(ctx, AV_LOG_ERROR, "Inputs with different underlying QSV devices are forbidden.\n");
289  return AVERROR(EINVAL);
290  }
291  }
292 
293  outlink->w = vpp->var_values[VAR_MW];
294  outlink->h = vpp->var_values[VAR_MH];
295  outlink->frame_rate = in0->frame_rate;
296  outlink->time_base = av_inv_q(outlink->frame_rate);
297 
299  if (ret < 0)
300  return ret;
301 
302  return ff_qsvvpp_create(ctx, &vpp->qsv, &vpp->qsv_param);
303 }
304 
305 /*
306  * Callback for qsvvpp
307  * @Note: qsvvpp composition does not generate PTS for result frame.
308  * so we assign the PTS from framesync to the output frame.
309  */
310 
312 {
313  QSVOverlayContext *s = outlink->src->priv;
314  frame->pts = av_rescale_q(s->fs.pts,
315  s->fs.time_base, outlink->time_base);
316  return ff_filter_frame(outlink, frame);
317 }
318 
319 
321 {
322  QSVOverlayContext *vpp = ctx->priv;
323 
324  /* fill composite config */
325  vpp->comp_conf.Header.BufferId = MFX_EXTBUFF_VPP_COMPOSITE;
326  vpp->comp_conf.Header.BufferSz = sizeof(vpp->comp_conf);
327  vpp->comp_conf.NumInputStream = ctx->nb_inputs;
328  vpp->comp_conf.InputStream = av_calloc(ctx->nb_inputs,
329  sizeof(*vpp->comp_conf.InputStream));
330  if (!vpp->comp_conf.InputStream)
331  return AVERROR(ENOMEM);
332 
333  /* initialize QSVVPP params */
335  vpp->qsv_param.ext_buf = av_mallocz(sizeof(*vpp->qsv_param.ext_buf));
336  if (!vpp->qsv_param.ext_buf)
337  return AVERROR(ENOMEM);
338 
339  vpp->qsv_param.ext_buf[0] = (mfxExtBuffer *)&vpp->comp_conf;
340  vpp->qsv_param.num_ext_buf = 1;
342  vpp->qsv_param.num_crop = 0;
343 
344  return 0;
345 }
346 
348 {
349  QSVOverlayContext *vpp = ctx->priv;
350 
351  ff_qsvvpp_free(&vpp->qsv);
352  ff_framesync_uninit(&vpp->fs);
353  av_freep(&vpp->comp_conf.InputStream);
354  av_freep(&vpp->qsv_param.ext_buf);
355 }
356 
358 {
359  QSVOverlayContext *s = ctx->priv;
360  return ff_framesync_activate(&s->fs);
361 }
362 
364 {
365  int i;
366  int ret;
367 
368  static const enum AVPixelFormat main_in_fmts[] = {
375  };
376  static const enum AVPixelFormat out_pix_fmts[] = {
380  };
381 
382  for (i = 0; i < ctx->nb_inputs; i++) {
383  ret = ff_formats_ref(ff_make_format_list(main_in_fmts), &ctx->inputs[i]->outcfg.formats);
384  if (ret < 0)
385  return ret;
386  }
387 
388  ret = ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->incfg.formats);
389  if (ret < 0)
390  return ret;
391 
392  return 0;
393 }
394 
395 static const AVFilterPad overlay_qsv_inputs[] = {
396  {
397  .name = "main",
398  .type = AVMEDIA_TYPE_VIDEO,
399  .config_props = config_main_input,
400  },
401  {
402  .name = "overlay",
403  .type = AVMEDIA_TYPE_VIDEO,
404  .config_props = config_overlay_input,
405  },
406 };
407 
409  {
410  .name = "default",
411  .type = AVMEDIA_TYPE_VIDEO,
412  .config_props = config_output,
413  },
414 };
415 
417  .name = "overlay_qsv",
418  .description = NULL_IF_CONFIG_SMALL("Quick Sync Video overlay."),
419  .priv_size = sizeof(QSVOverlayContext),
420  .preinit = overlay_qsv_framesync_preinit,
423  .activate = activate,
427  .priv_class = &overlay_qsv_class,
428  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
429 };
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_overlay_qsv.c:270
VAR_OVERLAY_W
@ VAR_OVERLAY_W
Definition: vf_overlay_qsv.c:54
QSVOverlayContext::var_values
double var_values[VAR_VARS_NB]
Definition: vf_overlay_qsv.c:66
FFFrameSyncIn::time_base
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:96
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:119
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
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_OX
@ VAR_OX
Definition: vf_overlay_qsv.c:52
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:381
VAR_OVERLAY_X
@ VAR_OVERLAY_X
Definition: vf_overlay_qsv.c:52
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:285
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:371
QSVVPPParam::out_sw_format
enum AVPixelFormat out_sw_format
Definition: qsvvpp.h:93
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2564
AVBufferRef::data
uint8_t * data
The data buffer.
Definition: buffer.h:90
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(overlay_qsv, QSVOverlayContext, fs)
QSVOverlayContext::overlay_oy
char * overlay_oy
Definition: vf_overlay_qsv.c:68
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:248
var_names
static const char *const var_names[]
Definition: vf_overlay_qsv.c:73
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
process_frame
static int process_frame(FFFrameSync *fs)
Definition: vf_overlay_qsv.c:230
VAR_OY
@ VAR_OY
Definition: vf_overlay_qsv.c:53
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AVOption
AVOption.
Definition: opt.h:247
EOF_ACTION_ENDALL
@ EOF_ACTION_ENDALL
Definition: framesync.h:28
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:168
QSVOverlayContext
Definition: vf_overlay_qsv.c:59
VAR_OVERLAY_iH
@ VAR_OVERLAY_iH
Definition: vf_overlay_qsv.c:51
preinit
static av_cold int preinit(AVFilterContext *ctx)
Definition: af_aresample.c:46
mathematics.h
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
FLAGS
#define FLAGS
Definition: vf_overlay_qsv.c:45
FFFrameSync
Frame sync structure.
Definition: framesync.h:146
EXT_INFINITY
@ EXT_INFINITY
Extend the frame to infinity.
Definition: framesync.h:75
video.h
OFFSET
#define OFFSET(x)
Definition: vf_overlay_qsv.c:44
config_overlay_input
static int config_overlay_input(AVFilterLink *inlink)
Definition: vf_overlay_qsv.c:202
formats.h
overlay_qsv_options
static const AVOption overlay_qsv_options[]
Definition: vf_overlay_qsv.c:85
EXT_STOP
@ EXT_STOP
Completely stop all streams with this one.
Definition: framesync.h:65
overlay_qsv_init
static int overlay_qsv_init(AVFilterContext *ctx)
Definition: vf_overlay_qsv.c:320
activate
static int activate(AVFilterContext *ctx)
Definition: vf_overlay_qsv.c:357
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:401
QSVOverlayContext::overlay_oh
char * overlay_oh
Definition: vf_overlay_qsv.c:68
qsvvpp.h
VAR_OW
@ VAR_OW
Definition: vf_overlay_qsv.c:54
FFFrameSyncIn
Input stream structure.
Definition: framesync.h:81
FFFrameSyncIn::sync
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
Definition: framesync.h:139
VAR_OVERLAY_Y
@ VAR_OVERLAY_Y
Definition: vf_overlay_qsv.c:53
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:336
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
QSVOverlayContext::overlay_pixel_alpha
uint16_t overlay_pixel_alpha
Definition: vf_overlay_qsv.c:69
av_cold
#define av_cold
Definition: attributes.h:90
s
#define s(width, name)
Definition: cbs_vp9.c:257
ff_qsvvpp_create
int ff_qsvvpp_create(AVFilterContext *avctx, QSVVPPContext **vpp, QSVVPPParam *param)
Definition: qsvvpp.c:655
ff_formats_ref
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:555
VAR_OVERLAY_iW
@ VAR_OVERLAY_iW
Definition: vf_overlay_qsv.c:50
var_name
var_name
Definition: noise_bsf.c:47
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:48
av_expr_eval
double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
Evaluate a previously parsed expression.
Definition: eval.c:766
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:141
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demuxing_decoding.c:41
AVExpr
Definition: eval.c:157
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
EOF_ACTION_PASS
@ EOF_ACTION_PASS
Definition: framesync.h:29
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
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
QSVVPPContext
Definition: qsvvpp.h:50
init_framesync
static int init_framesync(AVFilterContext *ctx)
Definition: vf_overlay_qsv.c:248
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
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
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
QSVVPPParam::num_crop
int num_crop
Definition: qsvvpp.h:96
QSVVPPParam
Definition: qsvvpp.h:84
QSVOverlayContext::overlay_alpha
uint16_t overlay_alpha
Definition: vf_overlay_qsv.c:69
AV_PIX_FMT_YUYV422
@ AV_PIX_FMT_YUYV422
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:67
VAR_OH
@ VAR_OH
Definition: vf_overlay_qsv.c:55
VAR_MAIN_iW
@ VAR_MAIN_iW
Definition: vf_overlay_qsv.c:48
eval_expr
static int eval_expr(AVFilterContext *ctx)
Definition: vf_overlay_qsv.c:104
AV_PIX_FMT_QSV
@ AV_PIX_FMT_QSV
HW acceleration through QSV, data[3] contains a pointer to the mfxFrameSurface1 structure.
Definition: pixfmt.h:212
ff_qsvvpp_free
int ff_qsvvpp_free(QSVVPPContext **vpp)
Definition: qsvvpp.c:773
QSVOverlayContext::overlay_ow
char * overlay_ow
Definition: vf_overlay_qsv.c:68
eval.h
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
overlay_qsv_inputs
static const AVFilterPad overlay_qsv_inputs[]
Definition: vf_overlay_qsv.c:395
overlay_qsv_outputs
static const AVFilterPad overlay_qsv_outputs[]
Definition: vf_overlay_qsv.c:408
config_main_input
static int config_main_input(AVFilterLink *inlink)
Definition: vf_overlay_qsv.c:178
QSVOverlayContext::comp_conf
mfxExtVPPComposite comp_conf
Definition: vf_overlay_qsv.c:65
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:376
have_alpha_planar
static int have_alpha_planar(AVFilterLink *link)
Definition: vf_overlay_qsv.c:160
VAR_VARS_NB
@ VAR_VARS_NB
Definition: vf_overlay_qsv.c:56
ff_vf_overlay_qsv
const AVFilter ff_vf_overlay_qsv
Definition: vf_overlay_qsv.c:416
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:364
QSVOverlayContext::overlay_ox
char * overlay_ox
Definition: vf_overlay_qsv.c:68
overlay_qsv_query_formats
static int overlay_qsv_query_formats(AVFilterContext *ctx)
Definition: vf_overlay_qsv.c:363
internal.h
QSVOverlayContext::fs
FFFrameSync fs
Definition: vf_overlay_qsv.c:62
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
filter_callback
static int filter_callback(AVFilterLink *outlink, AVFrame *frame)
Definition: vf_overlay_qsv.c:311
overlay_alpha
static const char overlay_alpha[]
Definition: vf_overlay_vulkan.c:63
common.h
out_pix_fmts
static enum AVPixelFormat out_pix_fmts[]
Definition: vf_ciescope.c:133
QSVVPPParam::num_ext_buf
int num_ext_buf
Definition: qsvvpp.h:89
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:263
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
QSVVPPParam::filter_frame
int(* filter_frame)(AVFilterLink *outlink, AVFrame *frame)
Definition: qsvvpp.h:86
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:271
PASS_EXPR
#define PASS_EXPR(e, s)
AVFilter
Filter definition.
Definition: avfilter.h:149
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_NV12
@ AV_PIX_FMT_NV12
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:89
frame
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
Definition: filter_design.txt:264
AVHWFramesContext::device_ctx
AVHWDeviceContext * device_ctx
The parent AVHWDeviceContext.
Definition: hwcontext.h:149
VAR_MH
@ VAR_MH
Definition: vf_overlay_qsv.c:49
ff_framesync_init
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:79
EOF_ACTION_REPEAT
@ EOF_ACTION_REPEAT
Definition: framesync.h:27
VAR_MW
@ VAR_MW
Definition: vf_overlay_qsv.c:48
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:607
FFFrameSyncIn::before
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:86
framesync.h
ff_qsvvpp_filter_frame
int ff_qsvvpp_filter_frame(QSVVPPContext *s, AVFilterLink *inlink, AVFrame *picref)
Definition: qsvvpp.c:798
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
FF_INLINK_IDX
#define FF_INLINK_IDX(link)
Find the index of a link.
Definition: internal.h:334
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
AVFilterContext
An instance of a filter.
Definition: avfilter.h:386
QSVOverlayContext::qsv
QSVVPPContext * qsv
Definition: vf_overlay_qsv.c:63
desc
const char * desc
Definition: libsvtav1.c:79
VAR_OVERLAY_H
@ VAR_OVERLAY_H
Definition: vf_overlay_qsv.c:55
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
imgutils.h
hwcontext.h
VAR_MAIN_iH
@ VAR_MAIN_iH
Definition: vf_overlay_qsv.c:49
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
QSVOverlayContext::qsv_param
QSVVPPParam qsv_param
Definition: vf_overlay_qsv.c:64
FFFrameSyncIn::after
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
uninit
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
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:336
avstring.h
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:228
overlay_qsv_uninit
static av_cold void overlay_qsv_uninit(AVFilterContext *ctx)
Definition: vf_overlay_qsv.c:347
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233
QSVVPPParam::ext_buf
mfxExtBuffer ** ext_buf
Definition: qsvvpp.h:90
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:2484