FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/buffersrc.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 178 242 73.6%
Functions: 13 14 92.9%
Branches: 122 212 57.5%
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 "avfilter_internal.h"
39 #include "buffersrc.h"
40 #include "filters.h"
41 #include "formats.h"
42 #include "video.h"
43
44 typedef struct BufferSourceContext {
45 const AVClass *class;
46 AVRational time_base; ///< time_base to set in the output link
47 AVRational frame_rate; ///< frame_rate to set in the output link
48 unsigned nb_failed_requests;
49
50 /* video only */
51 int w, h, prev_w, prev_h;
52 enum AVPixelFormat pix_fmt, prev_pix_fmt;
53 enum AVColorSpace color_space, prev_color_space;
54 enum AVColorRange color_range, prev_color_range;
55 AVRational pixel_aspect;
56
57 AVBufferRef *hw_frames_ctx;
58
59 /* audio only */
60 int sample_rate;
61 enum AVSampleFormat sample_fmt;
62 int channels;
63 char *channel_layout_str;
64 AVChannelLayout ch_layout;
65
66 int eof;
67 int64_t last_pts;
68 int link_delta, prev_delta;
69 } BufferSourceContext;
70
71 #define CHECK_VIDEO_PARAM_CHANGE(s, c, width, height, format, csp, range, pts)\
72 c->link_delta = c->w != width || c->h != height || c->pix_fmt != format ||\
73 c->color_space != csp || c->color_range != range;\
74 c->prev_delta = c->prev_w != width || c->prev_h != height || c->prev_pix_fmt != format ||\
75 c->prev_color_space != csp || c->prev_color_range != range;\
76 if (c->link_delta) {\
77 int loglevel = c->prev_delta ? AV_LOG_WARNING : AV_LOG_DEBUG;\
78 av_log(s, loglevel, "Changing video frame properties on the fly is not supported by all filters.\n");\
79 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",\
80 c->w, c->h, c->pix_fmt, av_color_space_name(c->color_space), av_color_range_name(c->color_range),\
81 width, height, format, av_color_space_name(csp), av_color_range_name(range),\
82 av_ts2timestr(pts, &s->outputs[0]->time_base));\
83 }\
84 if (c->prev_delta) {\
85 if (!c->link_delta)\
86 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));\
87 c->prev_w = width;\
88 c->prev_h = height;\
89 c->prev_pix_fmt = format;\
90 c->prev_color_space = csp;\
91 c->prev_color_range = range;\
92 }
93
94 #define CHECK_AUDIO_PARAM_CHANGE(s, c, srate, layout, format, pts)\
95 if (c->sample_fmt != format || c->sample_rate != srate ||\
96 av_channel_layout_compare(&c->ch_layout, &layout) || c->channels != layout.nb_channels) {\
97 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",\
98 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,\
99 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));\
100 av_log(s, AV_LOG_ERROR, "Changing audio frame properties on the fly is not supported.\n");\
101 return AVERROR(EINVAL);\
102 }
103
104 5567 AVBufferSrcParameters *av_buffersrc_parameters_alloc(void)
105 {
106 5567 AVBufferSrcParameters *par = av_mallocz(sizeof(*par));
107
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 5567 if (!par)
108 ✗ return NULL;
109
110 5567 par->format = -1;
111 5567 par->color_range = AVCOL_RANGE_UNSPECIFIED;
112 5567 par->color_space = AVCOL_SPC_UNSPECIFIED;
113
114 5567 return par;
115 }
116
117 5567 int av_buffersrc_parameters_set(AVFilterContext *ctx, AVBufferSrcParameters *param)
118 {
119 5567 BufferSourceContext *s = ctx->priv;
120
121
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 5567 if (param->time_base.num > 0 && param->time_base.den > 0)
122 5567 s->time_base = param->time_base;
123
124
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 5567 switch (ctx->filter->outputs[0].type) {
125 5567 case AVMEDIA_TYPE_VIDEO:
126
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 5567 if (param->format != AV_PIX_FMT_NONE) {
127 5567 s->pix_fmt = s->prev_pix_fmt = param->format;
128 }
129
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 5567 if (param->width > 0)
130 5567 s->w = s->prev_w = param->width;
131
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 5567 if (param->height > 0)
132 5567 s->h = s->prev_h = param->height;
133
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 5567 if (param->sample_aspect_ratio.num > 0 && param->sample_aspect_ratio.den > 0)
134 677 s->pixel_aspect = param->sample_aspect_ratio;
135
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 5567 if (param->frame_rate.num > 0 && param->frame_rate.den > 0)
136 5562 s->frame_rate = param->frame_rate;
137
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 5567 if (param->hw_frames_ctx) {
138 ✗ av_buffer_unref(&s->hw_frames_ctx);
139 ✗ s->hw_frames_ctx = av_buffer_ref(param->hw_frames_ctx);
140 ✗ if (!s->hw_frames_ctx)
141 ✗ return AVERROR(ENOMEM);
142 }
143
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 5567 if (param->color_space != AVCOL_SPC_UNSPECIFIED)
144 369 s->color_space = s->prev_color_space = param->color_space;
145
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 5567 if (param->color_range != AVCOL_RANGE_UNSPECIFIED)
146 4261 s->color_range = s->prev_color_range = param->color_range;
147 5567 break;
148 ✗ case AVMEDIA_TYPE_AUDIO:
149 ✗ if (param->format != AV_SAMPLE_FMT_NONE) {
150 ✗ s->sample_fmt = param->format;
151 }
152 ✗ if (param->sample_rate > 0)
153 ✗ s->sample_rate = param->sample_rate;
154 ✗ if (param->ch_layout.nb_channels) {
155 ✗ int ret = av_channel_layout_copy(&s->ch_layout, &param->ch_layout);
156 ✗ if (ret < 0)
157 ✗ return ret;
158 }
159 ✗ break;
160 ✗ default:
161 ✗ return AVERROR_BUG;
162 }
163
164 5567 return 0;
165 }
166
167 ✗ int attribute_align_arg av_buffersrc_write_frame(AVFilterContext *ctx, const AVFrame *frame)
168 {
169 ✗ return av_buffersrc_add_frame_flags(ctx, (AVFrame *)frame,
170 AV_BUFFERSRC_FLAG_KEEP_REF);
171 }
172
173 241 int attribute_align_arg av_buffersrc_add_frame(AVFilterContext *ctx, AVFrame *frame)
174 {
175 241 return av_buffersrc_add_frame_flags(ctx, frame, 0);
176 }
177
178 366614 static int push_frame(AVFilterGraph *graph)
179 {
180 int ret;
181
182 while (1) {
183 2252883 ret = ff_filter_graph_run_once(graph);
184
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 2252883 if (ret == AVERROR(EAGAIN))
185 366614 break;
186
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 1886269 if (ret < 0)
187 ✗ return ret;
188 }
189 366614 return 0;
190 }
191
192 363610 int attribute_align_arg av_buffersrc_add_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags)
193 {
194 363610 BufferSourceContext *s = ctx->priv;
195 AVFrame *copy;
196 int refcounted, ret;
197
198 363610 s->nb_failed_requests = 0;
199
200
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 363610 if (!frame)
201 12 return av_buffersrc_close(ctx, s->last_pts, flags);
202
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 363598 if (s->eof)
203 1 return AVERROR_EOF;
204
205 363597 s->last_pts = frame->pts + frame->duration;
206
207 363597 refcounted = !!frame->buf[0];
208
209
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 363597 if (!(flags & AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT)) {
210
211
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 363597 switch (ctx->outputs[0]->type) {
212 111427 case AVMEDIA_TYPE_VIDEO:
213
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 116625 CHECK_VIDEO_PARAM_CHANGE(ctx, s, frame->width, frame->height,
214 frame->format, frame->colorspace,
215 frame->color_range, frame->pts);
216 111427 break;
217 252170 case AVMEDIA_TYPE_AUDIO:
218 /* For layouts unknown on input but known on link after negotiation. */
219
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 252170 if (frame->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC && frame->ch_layout.nb_channels == s->ch_layout.nb_channels) {
220 1970 ret = av_channel_layout_copy(&frame->ch_layout, &s->ch_layout);
221
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 1970 if (ret < 0)
222 ✗ return ret;
223 }
224
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 252170 CHECK_AUDIO_PARAM_CHANGE(ctx, s, frame->sample_rate, frame->ch_layout,
225 frame->format, frame->pts);
226 252170 break;
227 ✗ default:
228 ✗ return AVERROR(EINVAL);
229 }
230
231 }
232
233
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 363597 if (refcounted && !(flags & AV_BUFFERSRC_FLAG_KEEP_REF)) {
234
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 363326 if (!(copy = av_frame_alloc()))
235 ✗ return AVERROR(ENOMEM);
236 363326 av_frame_move_ref(copy, frame);
237 } else {
238 271 copy = av_frame_clone(frame);
239
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 271 if (!copy)
240 ✗ return AVERROR(ENOMEM);
241 }
242
243 #if FF_API_INTERLACED_FRAME
244 FF_DISABLE_DEPRECATION_WARNINGS
245
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 363597 if (copy->interlaced_frame)
246 7622 copy->flags |= AV_FRAME_FLAG_INTERLACED;
247
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 363597 if (copy->top_field_first)
248 5435 copy->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
249 FF_ENABLE_DEPRECATION_WARNINGS
250 #endif
251
252 #if FF_API_FRAME_KEY
253 FF_DISABLE_DEPRECATION_WARNINGS
254
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 363597 if (copy->key_frame)
255 232342 copy->flags |= AV_FRAME_FLAG_KEY;
256 FF_ENABLE_DEPRECATION_WARNINGS
257 #endif
258
259
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 363597 if (copy->colorspace == AVCOL_SPC_UNSPECIFIED)
260 105357 copy->colorspace = ctx->outputs[0]->colorspace;
261
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 363597 if (copy->color_range == AVCOL_RANGE_UNSPECIFIED)
262 308013 copy->color_range = ctx->outputs[0]->color_range;
263
264 363597 ret = ff_filter_frame(ctx->outputs[0], copy);
265
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 363597 if (ret < 0)
266 ✗ return ret;
267
268
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 363597 if ((flags & AV_BUFFERSRC_FLAG_PUSH)) {
269 363368 ret = push_frame(ctx->graph);
270
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 363368 if (ret < 0)
271 ✗ return ret;
272 }
273
274 363597 return 0;
275 }
276
277 3258 int av_buffersrc_close(AVFilterContext *ctx, int64_t pts, unsigned flags)
278 {
279 3258 BufferSourceContext *s = ctx->priv;
280
281 3258 s->eof = 1;
282 3258 ff_avfilter_link_set_in_status(ctx->outputs[0], AVERROR_EOF, pts);
283
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 3258 return (flags & AV_BUFFERSRC_FLAG_PUSH) ? push_frame(ctx->graph) : 0;
284 }
285
286 5567 static av_cold int init_video(AVFilterContext *ctx)
287 {
288 5567 BufferSourceContext *c = ctx->priv;
289
290
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 5567 if (c->pix_fmt == AV_PIX_FMT_NONE) {
291 ✗ av_log(ctx, AV_LOG_ERROR, "Unspecified pixel format\n");
292 ✗ return AVERROR(EINVAL);
293 }
294
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 5567 if (av_pix_fmt_desc_get(c->pix_fmt)->flags & AV_PIX_FMT_FLAG_HWACCEL) {
295 ✗ if (!c->hw_frames_ctx) {
296 ✗ av_log(ctx, AV_LOG_ERROR, "Setting BufferSourceContext.pix_fmt "
297 "to a HW format requires hw_frames_ctx to be non-NULL!\n");
298 ✗ return AVERROR(EINVAL);
299 }
300 }
301
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 5567 if (c->w <= 0 || c->h <= 0) {
302 ✗ av_log(ctx, AV_LOG_ERROR, "Invalid size %dx%d\n", c->w, c->h);
303 ✗ return AVERROR(EINVAL);
304 }
305
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 5567 if (av_q2d(c->time_base) <= 0) {
306 ✗ av_log(ctx, AV_LOG_ERROR, "Invalid time base %d/%d\n", c->time_base.num, c->time_base.den);
307 ✗ return AVERROR(EINVAL);
308 }
309
310 5567 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",
311 c->w, c->h, av_get_pix_fmt_name(c->pix_fmt),
312 c->time_base.num, c->time_base.den, c->frame_rate.num, c->frame_rate.den,
313 c->pixel_aspect.num, c->pixel_aspect.den,
314 av_color_space_name(c->color_space), av_color_range_name(c->color_range));
315
316 5567 return 0;
317 }
318
319 371059 unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src)
320 {
321 371059 return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests;
322 }
323
324 #define OFFSET(x) offsetof(BufferSourceContext, x)
325 #define A AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM
326 #define V AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
327
328 static const AVOption buffer_options[] = {
329 { "width", NULL, OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
330 { "video_size", NULL, OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, .flags = V },
331 { "height", NULL, OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V },
332 { "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 },
333 { "sar", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
334 { "pixel_aspect", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
335 { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
336 { "frame_rate", NULL, OFFSET(frame_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V },
337 { "colorspace", "select colorspace", OFFSET(color_space), AV_OPT_TYPE_INT, {.i64=AVCOL_SPC_UNSPECIFIED}, 0, AVCOL_SPC_NB-1, V, .unit = "colorspace"},
338 { "gbr", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_RGB}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
339 { "bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT709}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
340 { "unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_UNSPECIFIED}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
341 { "fcc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_FCC}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
342 { "bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT470BG}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
343 { "smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE170M}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
344 { "smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE240M}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
345 { "ycgco", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
346 { "ycgco-re", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO_RE}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
347 { "ycgco-ro", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_YCGCO_RO}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
348 { "bt2020nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_NCL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
349 { "bt2020c", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_BT2020_CL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
350 { "smpte2085", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_SMPTE2085}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
351 { "chroma-derived-nc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_CHROMA_DERIVED_NCL},INT_MIN, INT_MAX, V, .unit = "colorspace"},
352 { "chroma-derived-c", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_CHROMA_DERIVED_CL}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
353 { "ictcp", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_ICTCP}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
354 { "ipt-c2", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_SPC_IPT_C2}, INT_MIN, INT_MAX, V, .unit = "colorspace"},
355 { "range", "select color range", OFFSET(color_range), AV_OPT_TYPE_INT, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, AVCOL_RANGE_NB-1, V, .unit = "range"},
356 { "unspecified", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, 0, V, .unit = "range"},
357 { "unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_UNSPECIFIED}, 0, 0, V, .unit = "range"},
358 { "limited", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
359 { "tv", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
360 { "mpeg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_MPEG}, 0, 0, V, .unit = "range"},
361 { "full", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
362 { "pc", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
363 { "jpeg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_RANGE_JPEG}, 0, 0, V, .unit = "range"},
364 { NULL },
365 };
366
367 AVFILTER_DEFINE_CLASS(buffer);
368
369 static const AVOption abuffer_options[] = {
370 { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, INT_MAX, A },
371 { "sample_rate", NULL, OFFSET(sample_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A },
372 { "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 },
373 { "channel_layout", NULL, OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, .flags = A },
374 { "channels", NULL, OFFSET(channels), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A },
375 { NULL },
376 };
377
378 AVFILTER_DEFINE_CLASS(abuffer);
379
380 1253 static av_cold int init_audio(AVFilterContext *ctx)
381 {
382 1253 BufferSourceContext *s = ctx->priv;
383 char buf[128];
384 1253 int ret = 0;
385
386
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 1253 if (s->sample_fmt == AV_SAMPLE_FMT_NONE) {
387 ✗ av_log(ctx, AV_LOG_ERROR, "Sample format was not set or was invalid\n");
388 ✗ return AVERROR(EINVAL);
389 }
390
391
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 1253 if (s->channel_layout_str || s->ch_layout.nb_channels) {
392 int n;
393
394
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 1240 if (!s->ch_layout.nb_channels) {
395 1240 ret = av_channel_layout_from_string(&s->ch_layout, s->channel_layout_str);
396
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 1240 if (ret < 0) {
397 ✗ av_log(ctx, AV_LOG_ERROR, "Invalid channel layout %s.\n",
398 s->channel_layout_str);
399 ✗ return AVERROR(EINVAL);
400 }
401 }
402
403 1240 n = s->ch_layout.nb_channels;
404 1240 av_channel_layout_describe(&s->ch_layout, buf, sizeof(buf));
405
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 1240 if (s->channels) {
406 ✗ if (n != s->channels) {
407 ✗ av_log(ctx, AV_LOG_ERROR,
408 "Mismatching channel count %d and layout '%s' "
409 "(%d channels)\n",
410 s->channels, buf, n);
411 ✗ return AVERROR(EINVAL);
412 }
413 }
414 1240 s->channels = n;
415
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 13 } else if (!s->channels) {
416 ✗ av_log(ctx, AV_LOG_ERROR, "Neither number of channels nor "
417 "channel layout specified\n");
418 ✗ return AVERROR(EINVAL);
419 } else {
420 13 s->ch_layout = FF_COUNT2LAYOUT(s->channels);
421 13 av_channel_layout_describe(&s->ch_layout, buf, sizeof(buf));
422 }
423
424
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 1253 if (!s->time_base.num)
425 ✗ s->time_base = (AVRational){1, s->sample_rate};
426
427 1253 av_log(ctx, AV_LOG_VERBOSE,
428 "tb:%d/%d samplefmt:%s samplerate:%d chlayout:%s\n",
429 s->time_base.num, s->time_base.den, av_get_sample_fmt_name(s->sample_fmt),
430 s->sample_rate, buf);
431
432 1253 return ret;
433 }
434
435 6820 static av_cold void uninit(AVFilterContext *ctx)
436 {
437 6820 BufferSourceContext *s = ctx->priv;
438 6820 av_buffer_unref(&s->hw_frames_ctx);
439 6820 av_channel_layout_uninit(&s->ch_layout);
440 6820 }
441
442 6820 static int query_formats(const AVFilterContext *ctx,
443 AVFilterFormatsConfig **cfg_in,
444 AVFilterFormatsConfig **cfg_out)
445 {
446 6820 const BufferSourceContext *c = ctx->priv;
447 6820 AVFilterChannelLayouts *channel_layouts = NULL;
448 6820 AVFilterFormats *formats = NULL;
449 6820 AVFilterFormats *samplerates = NULL;
450 6820 AVFilterFormats *color_spaces = NULL;
451 6820 AVFilterFormats *color_ranges = NULL;
452 int ret;
453
454
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 6820 switch (ctx->outputs[0]->type) {
455 5567 case AVMEDIA_TYPE_VIDEO: {
456 5567 enum AVPixelFormat swfmt = c->pix_fmt;
457
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 5567 if (av_pix_fmt_desc_get(swfmt)->flags & AV_PIX_FMT_FLAG_HWACCEL)
458 ✗ swfmt = ((AVHWFramesContext *) c->hw_frames_ctx->data)->sw_format;
459
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 11134 if ((ret = ff_add_format (&formats, c->pix_fmt)) < 0 ||
460 5567 (ret = ff_set_common_formats2(ctx, cfg_in, cfg_out, formats)) < 0)
461 ✗ return ret;
462 /* force specific colorspace/range downstream only for ordinary YUV */
463
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 5567 if (ff_fmt_is_regular_yuv(swfmt)) {
464
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 9734 if ((ret = ff_add_format(&color_spaces, c->color_space)) < 0 ||
465 4867 (ret = ff_set_common_color_spaces2(ctx, cfg_in, cfg_out, color_spaces)) < 0)
466 ✗ return ret;
467
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 4867 if (ff_fmt_is_forced_full_range(swfmt)) {
468
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 69 if ((ret = ff_add_format(&color_ranges, AVCOL_RANGE_JPEG)) < 0)
469 ✗ return ret;
470 } else {
471
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 4798 if ((ret = ff_add_format(&color_ranges, c->color_range)) < 0)
472 ✗ return ret;
473
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 4798 if (c->color_range == AVCOL_RANGE_UNSPECIFIED) {
474 /* allow implicitly promoting unspecified to mpeg */
475
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 685 if ((ret = ff_add_format(&color_ranges, AVCOL_RANGE_MPEG)) < 0)
476 ✗ return ret;
477 }
478 }
479
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 4867 if ((ret = ff_set_common_color_ranges2(ctx, cfg_in, cfg_out, color_ranges)) < 0)
480 ✗ return ret;
481 }
482 5567 break;
483 }
484 1253 case AVMEDIA_TYPE_AUDIO:
485
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 2506 if ((ret = ff_add_format (&formats , c->sample_fmt )) < 0 ||
486
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 2506 (ret = ff_set_common_formats2 (ctx, cfg_in, cfg_out, formats)) < 0 ||
487
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 2506 (ret = ff_add_format (&samplerates, c->sample_rate)) < 0 ||
488 1253 (ret = ff_set_common_samplerates2(ctx, cfg_in, cfg_out, samplerates)) < 0)
489 ✗ return ret;
490
491
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 1253 if ((ret = ff_add_channel_layout(&channel_layouts, &c->ch_layout)) < 0)
492 ✗ return ret;
493
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 1253 if ((ret = ff_set_common_channel_layouts2(ctx, cfg_in, cfg_out, channel_layouts)) < 0)
494 ✗ return ret;
495 1253 break;
496 ✗ default:
497 ✗ return AVERROR(EINVAL);
498 }
499
500 6820 return 0;
501 }
502
503 6820 static int config_props(AVFilterLink *link)
504 {
505 6820 FilterLink *l = ff_filter_link(link);
506 6820 BufferSourceContext *c = link->src->priv;
507
508
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 6820 switch (link->type) {
509 5567 case AVMEDIA_TYPE_VIDEO:
510 5567 link->w = c->w;
511 5567 link->h = c->h;
512 5567 link->sample_aspect_ratio = c->pixel_aspect;
513
514
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 5567 if (c->hw_frames_ctx) {
515 ✗ l->hw_frames_ctx = av_buffer_ref(c->hw_frames_ctx);
516 ✗ if (!l->hw_frames_ctx)
517 ✗ return AVERROR(ENOMEM);
518 }
519 5567 break;
520 1253 case AVMEDIA_TYPE_AUDIO:
521
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 1253 if (!c->ch_layout.nb_channels || c->ch_layout.order == AV_CHANNEL_ORDER_UNSPEC) {
522 13 int ret = av_channel_layout_copy(&c->ch_layout, &link->ch_layout);
523
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 13 if (ret < 0)
524 ✗ return ret;
525 }
526 1253 break;
527 ✗ default:
528 ✗ return AVERROR(EINVAL);
529 }
530
531 6820 link->time_base = c->time_base;
532 6820 l->frame_rate = c->frame_rate;
533 6820 return 0;
534 }
535
536 362857 static int activate(AVFilterContext *ctx)
537 {
538 362857 AVFilterLink *outlink = ctx->outputs[0];
539 362857 BufferSourceContext *c = ctx->priv;
540
541
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 362857 if (!c->eof && ff_outlink_get_status(outlink)) {
542 564 c->eof = 1;
543 564 return 0;
544 }
545
546
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 362293 if (c->eof) {
547 2664 ff_outlink_set_status(outlink, AVERROR_EOF, c->last_pts);
548 2664 return 0;
549 }
550 359629 c->nb_failed_requests++;
551 359629 return FFERROR_NOT_READY;
552 }
553
554 static const AVFilterPad avfilter_vsrc_buffer_outputs[] = {
555 {
556 .name = "default",
557 .type = AVMEDIA_TYPE_VIDEO,
558 .config_props = config_props,
559 },
560 };
561
562 const AVFilter ff_vsrc_buffer = {
563 .name = "buffer",
564 .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them accessible to the filterchain."),
565 .priv_size = sizeof(BufferSourceContext),
566 .activate = activate,
567 .init = init_video,
568 .uninit = uninit,
569
570 .inputs = NULL,
571 FILTER_OUTPUTS(avfilter_vsrc_buffer_outputs),
572 FILTER_QUERY_FUNC2(query_formats),
573 .priv_class = &buffer_class,
574 };
575
576 static const AVFilterPad avfilter_asrc_abuffer_outputs[] = {
577 {
578 .name = "default",
579 .type = AVMEDIA_TYPE_AUDIO,
580 .config_props = config_props,
581 },
582 };
583
584 const AVFilter ff_asrc_abuffer = {
585 .name = "abuffer",
586 .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them accessible to the filterchain."),
587 .priv_size = sizeof(BufferSourceContext),
588 .activate = activate,
589 .init = init_audio,
590 .uninit = uninit,
591
592 .inputs = NULL,
593 FILTER_OUTPUTS(avfilter_asrc_abuffer_outputs),
594 FILTER_QUERY_FUNC2(query_formats),
595 .priv_class = &abuffer_class,
596 };
597