FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/buffersrc.c
Date: 2024-07-17 14:05:47
Exec Total Coverage
Lines: 166 237 70.0%
Functions: 13 14 92.9%
Branches: 111 206 53.9%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2008 Vitor Sessak
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * memory buffer source filter
24 */
25
26 #include <float.h>
27
28 #include "libavutil/channel_layout.h"
29 #include "libavutil/frame.h"
30 #include "libavutil/hwcontext.h"
31 #include "libavutil/internal.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/samplefmt.h"
36 #include "libavutil/timestamp.h"
37 #include "avfilter.h"
38 #include "buffersrc.h"
39 #include "filters.h"
40 #include "formats.h"
41 #include "internal.h"
42
43 typedef struct BufferSourceContext {
44 const AVClass *class;
45 AVRational time_base; ///< time_base to set in the output link
46 AVRational frame_rate; ///< frame_rate to set in the output link
47 unsigned nb_failed_requests;
48
49 /* video only */
50 int w, h, prev_w, prev_h;
51 enum AVPixelFormat pix_fmt, prev_pix_fmt;
52 enum AVColorSpace color_space, prev_color_space;
53 enum AVColorRange color_range, prev_color_range;
54 AVRational pixel_aspect;
55
56 AVBufferRef *hw_frames_ctx;
57
58 /* audio only */
59 int sample_rate;
60 enum AVSampleFormat sample_fmt;
61 int channels;
62 char *channel_layout_str;
63 AVChannelLayout ch_layout;
64
65 int eof;
66 int64_t last_pts;
67 int link_delta, prev_delta;
68 } BufferSourceContext;
69
70 #define CHECK_VIDEO_PARAM_CHANGE(s, c, width, height, format, csp, range, pts)\
71 c->link_delta = c->w != width || c->h != height || c->pix_fmt != format ||\
72 c->color_space != csp || c->color_range != range;\
73 c->prev_delta = c->prev_w != width || c->prev_h != height || c->prev_pix_fmt != format ||\
74 c->prev_color_space != csp || c->prev_color_range != range;\
75 if (c->link_delta) {\
76 int loglevel = c->prev_delta ? AV_LOG_WARNING : AV_LOG_DEBUG;\
77 av_log(s, loglevel, "Changing video frame properties on the fly is not supported by all filters.\n");\
78 av_log(s, loglevel, "filter context - w: %d h: %d fmt: %d csp: %s range: %s, incoming frame - w: %d h: %d fmt: %d csp: %s range: %s pts_time: %s\n",\
79 c->w, c->h, c->pix_fmt, av_color_space_name(c->color_space), av_color_range_name(c->color_range),\
80 width, height, format, av_color_space_name(csp), av_color_range_name(range),\
81 av_ts2timestr(pts, &s->outputs[0]->time_base));\
82 }\
83 if (c->prev_delta) {\
84 if (!c->link_delta)\
85 av_log(s, AV_LOG_VERBOSE, "video frame properties congruent with link at pts_time: %s\n", av_ts2timestr(pts, &s->outputs[0]->time_base));\
86 c->prev_w = width;\
87 c->prev_h = height;\
88 c->prev_pix_fmt = format;\
89 c->prev_color_space = csp;\
90 c->prev_color_range = range;\
91 }
92
93 #define CHECK_AUDIO_PARAM_CHANGE(s, c, srate, layout, format, pts)\
94 if (c->sample_fmt != format || c->sample_rate != srate ||\
95 av_channel_layout_compare(&c->ch_layout, &layout) || c->channels != layout.nb_channels) {\
96 av_log(s, AV_LOG_INFO, "filter context - fmt: %s r: %d layout: %"PRIX64" ch: %d, incoming frame - fmt: %s r: %d layout: %"PRIX64" ch: %d pts_time: %s\n",\
97 av_get_sample_fmt_name(c->sample_fmt), c->sample_rate, c->ch_layout.order == AV_CHANNEL_ORDER_NATIVE ? c->ch_layout.u.mask : 0, c->channels,\
98 av_get_sample_fmt_name(format), srate, layout.order == AV_CHANNEL_ORDER_NATIVE ? layout.u.mask : 0, layout.nb_channels, av_ts2timestr(pts, &s->outputs[0]->time_base));\
99 av_log(s, AV_LOG_ERROR, "Changing audio frame properties on the fly is not supported.\n");\
100 return AVERROR(EINVAL);\
101 }
102
103 5207 AVBufferSrcParameters *av_buffersrc_parameters_alloc(void)
104 {
105 5207 AVBufferSrcParameters *par = av_mallocz(sizeof(*par));
106
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5207 if (!par)
107 return NULL;
108
109 5207 par->format = -1;
110 5207 par->color_range = AVCOL_RANGE_UNSPECIFIED;
111 5207 par->color_space = AVCOL_SPC_UNSPECIFIED;
112
113 5207 return par;
114 }
115
116 5207 int av_buffersrc_parameters_set(AVFilterContext *ctx, AVBufferSrcParameters *param)
117 {
118 5207 BufferSourceContext *s = ctx->priv;
119
120
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5207 if (param->time_base.num > 0 && param->time_base.den > 0)
121 s->time_base = param->time_base;
122
123
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5207 switch (ctx->filter->outputs[0].type) {
124 5207 case AVMEDIA_TYPE_VIDEO:
125
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5207 if (param->format != AV_PIX_FMT_NONE) {
126 s->pix_fmt = s->prev_pix_fmt = param->format;
127 }
128
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5207 if (param->width > 0)
129 s->w = s->prev_w = param->width;
130
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5207 if (param->height > 0)
131 s->h = s->prev_h = param->height;
132
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5207 if (param->sample_aspect_ratio.num > 0 && param->sample_aspect_ratio.den > 0)
133 s->pixel_aspect = param->sample_aspect_ratio;
134
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5207 if (param->frame_rate.num > 0 && param->frame_rate.den > 0)
135 s->frame_rate = param->frame_rate;
136
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5207 if (param->hw_frames_ctx) {
137 av_buffer_unref(&s->hw_frames_ctx);
138 s->hw_frames_ctx = av_buffer_ref(param->hw_frames_ctx);
139 if (!s->hw_frames_ctx)
140 return AVERROR(ENOMEM);
141 }
142
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5207 if (param->color_space != AVCOL_SPC_UNSPECIFIED)
143 s->color_space = s->prev_color_space = param->color_space;
144
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5207 if (param->color_range != AVCOL_RANGE_UNSPECIFIED)
145 s->color_range = s->prev_color_range = param->color_range;
146 5207 break;
147 case AVMEDIA_TYPE_AUDIO:
148 if (param->format != AV_SAMPLE_FMT_NONE) {
149 s->sample_fmt = param->format;
150 }
151 if (param->sample_rate > 0)
152 s->sample_rate = param->sample_rate;
153 if (param->ch_layout.nb_channels) {
154 int ret = av_channel_layout_copy(&s->ch_layout, &param->ch_layout);
155 if (ret < 0)
156 return ret;
157 }
158 break;
159 default:
160 return AVERROR_BUG;
161 }
162
163 5207 return 0;
164 }
165
166 int attribute_align_arg av_buffersrc_write_frame(AVFilterContext *ctx, const AVFrame *frame)
167 {
168 return av_buffersrc_add_frame_flags(ctx, (AVFrame *)frame,
169 AV_BUFFERSRC_FLAG_KEEP_REF);
170 }
171
172 204 int attribute_align_arg av_buffersrc_add_frame(AVFilterContext *ctx, AVFrame *frame)
173 {
174 204 return av_buffersrc_add_frame_flags(ctx, frame, 0);
175 }
176
177 362963 static int push_frame(AVFilterGraph *graph)
178 {
179 int ret;
180
181 while (1) {
182 2229441 ret = ff_filter_graph_run_once(graph);
183
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2229441 if (ret == AVERROR(EAGAIN))
184 362963 break;
185
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1866478 if (ret < 0)
186 return ret;
187 }
188 362963 return 0;
189 }
190
191 359974 int attribute_align_arg av_buffersrc_add_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags)
192 {
193 359974 BufferSourceContext *s = ctx->priv;
194 AVFrame *copy;
195 int refcounted, ret;
196
197 359974 s->nb_failed_requests = 0;
198
199
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359974 if (!frame)
200 12 return av_buffersrc_close(ctx, s->last_pts, flags);
201
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359962 if (s->eof)
202 1 return AVERROR_EOF;
203
204 359961 s->last_pts = frame->pts + frame->duration;
205
206 359961 refcounted = !!frame->buf[0];
207
208
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359961 if (!(flags & AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT)) {
209
210
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359961 switch (ctx->outputs[0]->type) {
211 107874 case AVMEDIA_TYPE_VIDEO:
212
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113081 CHECK_VIDEO_PARAM_CHANGE(ctx, s, frame->width, frame->height,
213 frame->format, frame->colorspace,
214 frame->color_range, frame->pts);
215 107874 break;
216 252087 case AVMEDIA_TYPE_AUDIO:
217 /* For layouts unknown on input but known on link after negotiation. */
218
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252087 if (frame->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC && frame->ch_layout.nb_channels == s->ch_layout.nb_channels) {
219 1970 ret = av_channel_layout_copy(&frame->ch_layout, &s->ch_layout);
220
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1970 if (ret < 0)
221 return ret;
222 }
223
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252087 CHECK_AUDIO_PARAM_CHANGE(ctx, s, frame->sample_rate, frame->ch_layout,
224 frame->format, frame->pts);
225 252087 break;
226 default:
227 return AVERROR(EINVAL);
228 }
229
230 }
231
232
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359961 if (refcounted && !(flags & AV_BUFFERSRC_FLAG_KEEP_REF)) {
233
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359690 if (!(copy = av_frame_alloc()))
234 return AVERROR(ENOMEM);
235 359690 av_frame_move_ref(copy, frame);
236 } else {
237 271 copy = av_frame_clone(frame);
238
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271 if (!copy)
239 return AVERROR(ENOMEM);
240 }
241
242 #if FF_API_INTERLACED_FRAME
243 FF_DISABLE_DEPRECATION_WARNINGS
244
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359961 if (copy->interlaced_frame)
245 7321 copy->flags |= AV_FRAME_FLAG_INTERLACED;
246
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359961 if (copy->top_field_first)
247 5436 copy->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
248 FF_ENABLE_DEPRECATION_WARNINGS
249 #endif
250
251 #if FF_API_FRAME_KEY
252 FF_DISABLE_DEPRECATION_WARNINGS
253
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359961 if (copy->key_frame)
254 230026 copy->flags |= AV_FRAME_FLAG_KEY;
255 FF_ENABLE_DEPRECATION_WARNINGS
256 #endif
257
258
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359961 if (copy->colorspace == AVCOL_SPC_UNSPECIFIED)
259 101828 copy->colorspace = ctx->outputs[0]->colorspace;
260
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359961 if (copy->color_range == AVCOL_RANGE_UNSPECIFIED)
261 327960 copy->color_range = ctx->outputs[0]->color_range;
262
263 359961 ret = ff_filter_frame(ctx->outputs[0], copy);
264
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359961 if (ret < 0)
265 return ret;
266
267
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359961 if ((flags & AV_BUFFERSRC_FLAG_PUSH)) {
268 359769 ret = push_frame(ctx->graph);
269
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359769 if (ret < 0)
270 return ret;
271 }
272
273 359961 return 0;
274 }
275
276 3206 int av_buffersrc_close(AVFilterContext *ctx, int64_t pts, unsigned flags)
277 {
278 3206 BufferSourceContext *s = ctx->priv;
279
280 3206 s->eof = 1;
281 3206 ff_avfilter_link_set_in_status(ctx->outputs[0], AVERROR_EOF, pts);
282
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3206 return (flags & AV_BUFFERSRC_FLAG_PUSH) ? push_frame(ctx->graph) : 0;
283 }
284
285 5207 static av_cold int init_video(AVFilterContext *ctx)
286 {
287 5207 BufferSourceContext *c = ctx->priv;
288
289
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5207 if (c->pix_fmt == AV_PIX_FMT_NONE) {
290 av_log(ctx, AV_LOG_ERROR, "Unspecified pixel format\n");
291 return AVERROR(EINVAL);
292 }
293
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5207 if (c->w <= 0 || c->h <= 0) {
294 av_log(ctx, AV_LOG_ERROR, "Invalid size %dx%d\n", c->w, c->h);
295 return AVERROR(EINVAL);
296 }
297
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5207 if (av_q2d(c->time_base) <= 0) {
298 av_log(ctx, AV_LOG_ERROR, "Invalid time base %d/%d\n", c->time_base.num, c->time_base.den);
299 return AVERROR(EINVAL);
300 }
301
302 5207 av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s tb:%d/%d fr:%d/%d sar:%d/%d csp:%s range:%s\n",
303 c->w, c->h, av_get_pix_fmt_name(c->pix_fmt),
304 c->time_base.num, c->time_base.den, c->frame_rate.num, c->frame_rate.den,
305 c->pixel_aspect.num, c->pixel_aspect.den,
306 av_color_space_name(c->color_space), av_color_range_name(c->color_range));
307
308 5207 return 0;
309 }
310
311 367371 unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src)
312 {
313 367371 return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests;
314 }
315
316 #define OFFSET(x) offsetof(BufferSourceContext, x)
317 #define A AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM
318 #define V AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
319
320 static const AVOption buffer_options[] = {
321 { "width", NULL, OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
322 { "video_size", NULL, OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, .flags = V },
323 { "height", NULL, OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
324 { "pix_fmt", NULL, OFFSET(pix_fmt), AV_OPT_TYPE_PIXEL_FMT, { .i64 = AV_PIX_FMT_NONE }, .min = AV_PIX_FMT_NONE, .max = INT_MAX, .flags = V },
325 { "sar", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
326 { "pixel_aspect", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
327 { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
328 { "frame_rate", NULL, OFFSET(frame_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
329 { "colorspace", "select colorspace", OFFSET(color_space), AV_OPT_TYPE_INT, {.i64=AVCOL_SPC_UNSPECIFIED}, 0, AVCOL_SPC_NB-1, V, .unit = "colorspace"},
330 { "gbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_RGB}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
331 { "bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT709}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
332 { "unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_UNSPECIFIED}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
333 { "fcc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_FCC}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
334 { "bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT470BG}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
335 { "smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE170M}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
336 { "smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE240M}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
337 { "ycgco", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
338 { "ycgco-re", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO_RE}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
339 { "ycgco-ro", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO_RO}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
340 { "bt2020nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_NCL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
341 { "bt2020c", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_CL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
342 { "smpte2085", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE2085}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
343 { "chroma-derived-nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_CHROMA_DERIVED_NCL},INT_MIN, INT_MAX, V, .unit = "colorspace"},
344 { "chroma-derived-c", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_CHROMA_DERIVED_CL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
345 { "ictcp", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_ICTCP}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
346 { "ipt-c2", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_IPT_C2}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
347 { "range", "select color range", OFFSET(color_range), AV_OPT_TYPE_INT, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, AVCOL_RANGE_NB-1, V, .unit = "range"},
348 { "unspecified", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, 0, V, .unit = "range"},
349 { "unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, 0, V, .unit = "range"},
350 { "limited", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
351 { "tv", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
352 { "mpeg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
353 { "full", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
354 { "pc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
355 { "jpeg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
356 { NULL },
357 };
358
359 AVFILTER_DEFINE_CLASS(buffer);
360
361 static const AVOption abuffer_options[] = {
362 { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, INT_MAX, A },
363 { "sample_rate", NULL, OFFSET(sample_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A },
364 { "sample_fmt", NULL, OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, { .i64 = AV_SAMPLE_FMT_NONE }, .min = AV_SAMPLE_FMT_NONE, .max = INT_MAX, .flags = A },
365 { "channel_layout", NULL, OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, .flags = A },
366 { "channels", NULL, OFFSET(channels), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A },
367 { NULL },
368 };
369
370 AVFILTER_DEFINE_CLASS(abuffer);
371
372 1246 static av_cold int init_audio(AVFilterContext *ctx)
373 {
374 1246 BufferSourceContext *s = ctx->priv;
375 char buf[128];
376 1246 int ret = 0;
377
378
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1246 if (s->sample_fmt == AV_SAMPLE_FMT_NONE) {
379 av_log(ctx, AV_LOG_ERROR, "Sample format was not set or was invalid\n");
380 return AVERROR(EINVAL);
381 }
382
383
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1246 if (s->channel_layout_str || s->ch_layout.nb_channels) {
384 int n;
385
386
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1233 if (!s->ch_layout.nb_channels) {
387 1233 ret = av_channel_layout_from_string(&s->ch_layout, s->channel_layout_str);
388
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1233 if (ret < 0) {
389 av_log(ctx, AV_LOG_ERROR, "Invalid channel layout %s.\n",
390 s->channel_layout_str);
391 return AVERROR(EINVAL);
392 }
393 }
394
395 1233 n = s->ch_layout.nb_channels;
396 1233 av_channel_layout_describe(&s->ch_layout, buf, sizeof(buf));
397
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1233 if (s->channels) {
398 if (n != s->channels) {
399 av_log(ctx, AV_LOG_ERROR,
400 "Mismatching channel count %d and layout '%s' "
401 "(%d channels)\n",
402 s->channels, buf, n);
403 return AVERROR(EINVAL);
404 }
405 }
406 1233 s->channels = n;
407
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13 } else if (!s->channels) {
408 av_log(ctx, AV_LOG_ERROR, "Neither number of channels nor "
409 "channel layout specified\n");
410 return AVERROR(EINVAL);
411 } else {
412 13 s->ch_layout = FF_COUNT2LAYOUT(s->channels);
413 13 av_channel_layout_describe(&s->ch_layout, buf, sizeof(buf));
414 }
415
416
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1246 if (!s->time_base.num)
417 s->time_base = (AVRational){1, s->sample_rate};
418
419 1246 av_log(ctx, AV_LOG_VERBOSE,
420 "tb:%d/%d samplefmt:%s samplerate:%d chlayout:%s\n",
421 s->time_base.num, s->time_base.den, av_get_sample_fmt_name(s->sample_fmt),
422 s->sample_rate, buf);
423
424 1246 return ret;
425 }
426
427 6453 static av_cold void uninit(AVFilterContext *ctx)
428 {
429 6453 BufferSourceContext *s = ctx->priv;
430 6453 av_buffer_unref(&s->hw_frames_ctx);
431 6453 av_channel_layout_uninit(&s->ch_layout);
432 6453 }
433
434 6453 static int query_formats(AVFilterContext *ctx)
435 {
436 6453 BufferSourceContext *c = ctx->priv;
437 6453 AVFilterChannelLayouts *channel_layouts = NULL;
438 6453 AVFilterFormats *formats = NULL;
439 6453 AVFilterFormats *samplerates = NULL;
440 6453 AVFilterFormats *color_spaces = NULL;
441 6453 AVFilterFormats *color_ranges = NULL;
442 int ret;
443
444
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6453 switch (ctx->outputs[0]->type) {
445 5207 case AVMEDIA_TYPE_VIDEO: {
446 5207 enum AVPixelFormat swfmt = c->pix_fmt;
447
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5207 if (av_pix_fmt_desc_get(swfmt)->flags & AV_PIX_FMT_FLAG_HWACCEL) {
448 if (!c->hw_frames_ctx) {
449 av_log(ctx, AV_LOG_ERROR, "Setting BufferSourceContext.pix_fmt "
450 "to a HW format requires hw_frames_ctx to be non-NULL!\n");
451 return AVERROR(EINVAL);
452 }
453 swfmt = ((AVHWFramesContext *) c->hw_frames_ctx->data)->sw_format;
454 }
455
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10414 if ((ret = ff_add_format (&formats, c->pix_fmt)) < 0 ||
456 5207 (ret = ff_set_common_formats (ctx , formats )) < 0)
457 return ret;
458 /* force specific colorspace/range downstream only for ordinary YUV */
459
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5207 if (ff_fmt_is_regular_yuv(swfmt)) {
460
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8878 if ((ret = ff_add_format(&color_spaces, c->color_space)) < 0 ||
461 4439 (ret = ff_set_common_color_spaces(ctx, color_spaces)) < 0)
462 return ret;
463
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4439 if ((ret = ff_add_format(&color_ranges, c->color_range)) < 0)
464 return ret;
465
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4439 if (c->color_range == AVCOL_RANGE_UNSPECIFIED) {
466 /* allow implicitly promoting unspecified to mpeg */
467
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1167 if ((ret = ff_add_format(&color_ranges, AVCOL_RANGE_MPEG)) < 0)
468 return ret;
469 }
470
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4439 if ((ret = ff_set_common_color_ranges(ctx, color_ranges)) < 0)
471 return ret;
472 }
473 5207 break;
474 }
475 1246 case AVMEDIA_TYPE_AUDIO:
476
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2492 if ((ret = ff_add_format (&formats , c->sample_fmt )) < 0 ||
477
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2492 (ret = ff_set_common_formats (ctx , formats )) < 0 ||
478
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2492 (ret = ff_add_format (&samplerates, c->sample_rate)) < 0 ||
479 1246 (ret = ff_set_common_samplerates (ctx , samplerates )) < 0)
480 return ret;
481
482
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1246 if ((ret = ff_add_channel_layout(&channel_layouts, &c->ch_layout)) < 0)
483 return ret;
484
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1246 if ((ret = ff_set_common_channel_layouts(ctx, channel_layouts)) < 0)
485 return ret;
486 1246 break;
487 default:
488 return AVERROR(EINVAL);
489 }
490
491 6453 return 0;
492 }
493
494 6453 static int config_props(AVFilterLink *link)
495 {
496 6453 BufferSourceContext *c = link->src->priv;
497
498
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6453 switch (link->type) {
499 5207 case AVMEDIA_TYPE_VIDEO:
500 5207 link->w = c->w;
501 5207 link->h = c->h;
502 5207 link->sample_aspect_ratio = c->pixel_aspect;
503
504
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5207 if (c->hw_frames_ctx) {
505 link->hw_frames_ctx = av_buffer_ref(c->hw_frames_ctx);
506 if (!link->hw_frames_ctx)
507 return AVERROR(ENOMEM);
508 }
509 5207 break;
510 1246 case AVMEDIA_TYPE_AUDIO:
511
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1246 if (!c->ch_layout.nb_channels || c->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC) {
512 13 int ret = av_channel_layout_copy(&c->ch_layout, &link->ch_layout);
513
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13 if (ret < 0)
514 return ret;
515 }
516 1246 break;
517 default:
518 return AVERROR(EINVAL);
519 }
520
521 6453 link->time_base = c->time_base;
522 6453 link->frame_rate = c->frame_rate;
523 6453 return 0;
524 }
525
526 359520 static int activate(AVFilterContext *ctx)
527 {
528 359520 AVFilterLink *outlink = ctx->outputs[0];
529 359520 BufferSourceContext *c = ctx->priv;
530
531
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359520 if (!c->eof && ff_outlink_get_status(outlink)) {
532 548 c->eof = 1;
533 548 return 0;
534 }
535
536
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358972 if (c->eof) {
537 2617 ff_outlink_set_status(outlink, AVERROR_EOF, c->last_pts);
538 2617 return 0;
539 }
540 356355 c->nb_failed_requests++;
541 356355 return FFERROR_NOT_READY;
542 }
543
544 static const AVFilterPad avfilter_vsrc_buffer_outputs[] = {
545 {
546 .name = "default",
547 .type = AVMEDIA_TYPE_VIDEO,
548 .config_props = config_props,
549 },
550 };
551
552 const AVFilter ff_vsrc_buffer = {
553 .name = "buffer",
554 .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them accessible to the filterchain."),
555 .priv_size = sizeof(BufferSourceContext),
556 .activate = activate,
557 .init = init_video,
558 .uninit = uninit,
559
560 .inputs = NULL,
561 FILTER_OUTPUTS(avfilter_vsrc_buffer_outputs),
562 FILTER_QUERY_FUNC(query_formats),
563 .priv_class = &buffer_class,
564 };
565
566 static const AVFilterPad avfilter_asrc_abuffer_outputs[] = {
567 {
568 .name = "default",
569 .type = AVMEDIA_TYPE_AUDIO,
570 .config_props = config_props,
571 },
572 };
573
574 const AVFilter ff_asrc_abuffer = {
575 .name = "abuffer",
576 .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them accessible to the filterchain."),
577 .priv_size = sizeof(BufferSourceContext),
578 .activate = activate,
579 .init = init_audio,
580 .uninit = uninit,
581
582 .inputs = NULL,
583 FILTER_OUTPUTS(avfilter_asrc_abuffer_outputs),
584 FILTER_QUERY_FUNC(query_formats),
585 .priv_class = &abuffer_class,
586 };
587