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1 | /* | ||
2 | * Copyright (c) 2011 Stefano Sabatini | ||
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 | * buffer sink | ||
24 | */ | ||
25 | |||
26 | #include "libavutil/avassert.h" | ||
27 | #include "libavutil/avstring.h" | ||
28 | #include "libavutil/channel_layout.h" | ||
29 | #include "libavutil/common.h" | ||
30 | #include "libavutil/internal.h" | ||
31 | #include "libavutil/opt.h" | ||
32 | |||
33 | #define FF_INTERNAL_FIELDS 1 | ||
34 | #include "framequeue.h" | ||
35 | |||
36 | #include "audio.h" | ||
37 | #include "avfilter.h" | ||
38 | #include "buffersink.h" | ||
39 | #include "filters.h" | ||
40 | #include "formats.h" | ||
41 | #include "internal.h" | ||
42 | #include "video.h" | ||
43 | |||
44 | typedef struct BufferSinkContext { | ||
45 | const AVClass *class; | ||
46 | unsigned warning_limit; | ||
47 | |||
48 | /* only used for video */ | ||
49 | enum AVPixelFormat *pixel_fmts; ///< list of accepted pixel formats | ||
50 | int pixel_fmts_size; | ||
51 | |||
52 | /* only used for audio */ | ||
53 | enum AVSampleFormat *sample_fmts; ///< list of accepted sample formats | ||
54 | int sample_fmts_size; | ||
55 | #if FF_API_OLD_CHANNEL_LAYOUT | ||
56 | int64_t *channel_layouts; ///< list of accepted channel layouts | ||
57 | int channel_layouts_size; | ||
58 | int *channel_counts; ///< list of accepted channel counts | ||
59 | int channel_counts_size; | ||
60 | #endif | ||
61 | char *channel_layouts_str; ///< list of accepted channel layouts | ||
62 | int all_channel_counts; | ||
63 | int *sample_rates; ///< list of accepted sample rates | ||
64 | int sample_rates_size; | ||
65 | |||
66 | AVFrame *peeked_frame; | ||
67 | } BufferSinkContext; | ||
68 | |||
69 | #define NB_ITEMS(list) (list ## _size / sizeof(*list)) | ||
70 | |||
71 | #if FF_API_OLD_CHANNEL_LAYOUT | ||
72 | 1219 | static void cleanup_redundant_layouts(AVFilterContext *ctx) | |
73 | { | ||
74 | 1219 | BufferSinkContext *buf = ctx->priv; | |
75 | 1219 | int nb_layouts = NB_ITEMS(buf->channel_layouts); | |
76 | 1219 | int nb_counts = NB_ITEMS(buf->channel_counts); | |
77 | 1219 | uint64_t counts = 0; | |
78 | int i, lc, n; | ||
79 | |||
80 |
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1219 | for (i = 0; i < nb_counts; i++) |
81 | ✗ | if (buf->channel_counts[i] < 64) | |
82 | ✗ | counts |= (uint64_t)1 << buf->channel_counts[i]; | |
83 |
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1219 | for (i = lc = 0; i < nb_layouts; i++) { |
84 | ✗ | n = av_popcount64(buf->channel_layouts[i]); | |
85 | ✗ | if (n < 64 && (counts & ((uint64_t)1 << n))) | |
86 | ✗ | av_log(ctx, AV_LOG_WARNING, | |
87 | "Removing channel layout 0x%"PRIx64", redundant with %d channels\n", | ||
88 | ✗ | buf->channel_layouts[i], n); | |
89 | else | ||
90 | ✗ | buf->channel_layouts[lc++] = buf->channel_layouts[i]; | |
91 | } | ||
92 | 1219 | buf->channel_layouts_size = lc * sizeof(*buf->channel_layouts); | |
93 | 1219 | } | |
94 | #endif | ||
95 | |||
96 | ✗ | int attribute_align_arg av_buffersink_get_frame(AVFilterContext *ctx, AVFrame *frame) | |
97 | { | ||
98 | ✗ | return av_buffersink_get_frame_flags(ctx, frame, 0); | |
99 | } | ||
100 | |||
101 | 428202 | static int return_or_keep_frame(BufferSinkContext *buf, AVFrame *out, AVFrame *in, int flags) | |
102 | { | ||
103 |
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428202 | if ((flags & AV_BUFFERSINK_FLAG_PEEK)) { |
104 | 13727 | buf->peeked_frame = in; | |
105 |
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13727 | return out ? av_frame_ref(out, in) : 0; |
106 | } else { | ||
107 | av_assert1(out); | ||
108 | 414475 | buf->peeked_frame = NULL; | |
109 | 414475 | av_frame_move_ref(out, in); | |
110 | 414475 | av_frame_free(&in); | |
111 | 414475 | return 0; | |
112 | } | ||
113 | } | ||
114 | |||
115 | 1204333 | static int get_frame_internal(AVFilterContext *ctx, AVFrame *frame, int flags, int samples) | |
116 | { | ||
117 | 1204333 | BufferSinkContext *buf = ctx->priv; | |
118 | 1204333 | AVFilterLink *inlink = ctx->inputs[0]; | |
119 | int status, ret; | ||
120 | AVFrame *cur_frame; | ||
121 | int64_t pts; | ||
122 | |||
123 |
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1204333 | if (buf->peeked_frame) |
124 | 13727 | return return_or_keep_frame(buf, frame, buf->peeked_frame, flags); | |
125 | |||
126 | while (1) { | ||
127 |
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2539954 | ret = samples ? ff_inlink_consume_samples(inlink, samples, samples, &cur_frame) : |
128 | 2539954 | ff_inlink_consume_frame(inlink, &cur_frame); | |
129 |
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2539954 | if (ret < 0) { |
130 | ✗ | return ret; | |
131 |
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2539954 | } else if (ret) { |
132 | /* TODO return the frame instead of copying it */ | ||
133 | 414475 | return return_or_keep_frame(buf, frame, cur_frame, flags); | |
134 |
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2125479 | } else if (ff_inlink_acknowledge_status(inlink, &status, &pts)) { |
135 | 8190 | return status; | |
136 |
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2117289 | } else if ((flags & AV_BUFFERSINK_FLAG_NO_REQUEST)) { |
137 | 392975 | return AVERROR(EAGAIN); | |
138 |
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1724314 | } else if (inlink->frame_wanted_out) { |
139 | 1345413 | ret = ff_filter_graph_run_once(ctx->graph); | |
140 |
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1345413 | if (ret < 0) |
141 | 374966 | return ret; | |
142 | } else { | ||
143 | 378901 | ff_inlink_request_frame(inlink); | |
144 | } | ||
145 | } | ||
146 | } | ||
147 | |||
148 | 1204333 | int attribute_align_arg av_buffersink_get_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags) | |
149 | { | ||
150 | 1204333 | return get_frame_internal(ctx, frame, flags, ctx->inputs[0]->min_samples); | |
151 | } | ||
152 | |||
153 | ✗ | int attribute_align_arg av_buffersink_get_samples(AVFilterContext *ctx, | |
154 | AVFrame *frame, int nb_samples) | ||
155 | { | ||
156 | ✗ | return get_frame_internal(ctx, frame, 0, nb_samples); | |
157 | } | ||
158 | |||
159 | 6427 | static av_cold int common_init(AVFilterContext *ctx) | |
160 | { | ||
161 | 6427 | BufferSinkContext *buf = ctx->priv; | |
162 | |||
163 | 6427 | buf->warning_limit = 100; | |
164 | 6427 | return 0; | |
165 | } | ||
166 | |||
167 | 420622 | static int activate(AVFilterContext *ctx) | |
168 | { | ||
169 | 420622 | BufferSinkContext *buf = ctx->priv; | |
170 | |||
171 |
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420622 | if (buf->warning_limit && |
172 |
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420622 | ff_framequeue_queued_frames(&ctx->inputs[0]->fifo) >= buf->warning_limit) { |
173 | 5 | av_log(ctx, AV_LOG_WARNING, | |
174 | "%d buffers queued in %s, something may be wrong.\n", | ||
175 | buf->warning_limit, | ||
176 | 5 | (char *)av_x_if_null(ctx->name, ctx->filter->name)); | |
177 | 5 | buf->warning_limit *= 10; | |
178 | } | ||
179 | |||
180 | /* The frame is queued, the rest is up to get_frame_internal */ | ||
181 | 420622 | return 0; | |
182 | } | ||
183 | |||
184 | ✗ | void av_buffersink_set_frame_size(AVFilterContext *ctx, unsigned frame_size) | |
185 | { | ||
186 | ✗ | AVFilterLink *inlink = ctx->inputs[0]; | |
187 | |||
188 | ✗ | inlink->min_samples = inlink->max_samples = frame_size; | |
189 | ✗ | } | |
190 | |||
191 | #define MAKE_AVFILTERLINK_ACCESSOR(type, field) \ | ||
192 | type av_buffersink_get_##field(const AVFilterContext *ctx) { \ | ||
193 | av_assert0(ctx->filter->activate == activate); \ | ||
194 | return ctx->inputs[0]->field; \ | ||
195 | } | ||
196 | |||
197 |
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3732 | MAKE_AVFILTERLINK_ACCESSOR(enum AVMediaType , type ) |
198 |
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420962 | MAKE_AVFILTERLINK_ACCESSOR(AVRational , time_base ) |
199 |
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6427 | MAKE_AVFILTERLINK_ACCESSOR(int , format ) |
200 | |||
201 |
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106029 | MAKE_AVFILTERLINK_ACCESSOR(AVRational , frame_rate ) |
202 |
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6404 | MAKE_AVFILTERLINK_ACCESSOR(int , w ) |
203 |
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6404 | MAKE_AVFILTERLINK_ACCESSOR(int , h ) |
204 |
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6404 | MAKE_AVFILTERLINK_ACCESSOR(AVRational , sample_aspect_ratio) |
205 | |||
206 | #if FF_API_OLD_CHANNEL_LAYOUT | ||
207 | FF_DISABLE_DEPRECATION_WARNINGS | ||
208 | ✗ | MAKE_AVFILTERLINK_ACCESSOR(uint64_t , channel_layout ) | |
209 | FF_ENABLE_DEPRECATION_WARNINGS | ||
210 | #endif | ||
211 |
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6406 | MAKE_AVFILTERLINK_ACCESSOR(int , sample_rate ) |
212 | |||
213 | ✗ | MAKE_AVFILTERLINK_ACCESSOR(AVBufferRef * , hw_frames_ctx ) | |
214 | |||
215 | ✗ | int av_buffersink_get_channels(const AVFilterContext *ctx) | |
216 | { | ||
217 | ✗ | av_assert0(ctx->filter->activate == activate); | |
218 | ✗ | return ctx->inputs[0]->ch_layout.nb_channels; | |
219 | } | ||
220 | |||
221 | 6406 | int av_buffersink_get_ch_layout(const AVFilterContext *ctx, AVChannelLayout *out) | |
222 | { | ||
223 | 6406 | AVChannelLayout ch_layout = { 0 }; | |
224 | int ret; | ||
225 | |||
226 |
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6406 | av_assert0(ctx->filter->activate == activate); |
227 | 6406 | ret = av_channel_layout_copy(&ch_layout, &ctx->inputs[0]->ch_layout); | |
228 |
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6406 | if (ret < 0) |
229 | ✗ | return ret; | |
230 | 6406 | *out = ch_layout; | |
231 | 6406 | return 0; | |
232 | } | ||
233 | |||
234 | #define CHECK_LIST_SIZE(field) \ | ||
235 | if (buf->field ## _size % sizeof(*buf->field)) { \ | ||
236 | av_log(ctx, AV_LOG_ERROR, "Invalid size for " #field ": %d, " \ | ||
237 | "should be multiple of %d\n", \ | ||
238 | buf->field ## _size, (int)sizeof(*buf->field)); \ | ||
239 | return AVERROR(EINVAL); \ | ||
240 | } | ||
241 | 5208 | static int vsink_query_formats(AVFilterContext *ctx) | |
242 | { | ||
243 | 5208 | BufferSinkContext *buf = ctx->priv; | |
244 | 5208 | AVFilterFormats *formats = NULL; | |
245 | unsigned i; | ||
246 | int ret; | ||
247 | |||
248 |
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5208 | CHECK_LIST_SIZE(pixel_fmts) |
249 |
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5208 | if (buf->pixel_fmts_size) { |
250 | ✗ | for (i = 0; i < NB_ITEMS(buf->pixel_fmts); i++) | |
251 | ✗ | if ((ret = ff_add_format(&formats, buf->pixel_fmts[i])) < 0) | |
252 | ✗ | return ret; | |
253 | ✗ | if ((ret = ff_set_common_formats(ctx, formats)) < 0) | |
254 | ✗ | return ret; | |
255 | } else { | ||
256 |
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5208 | if ((ret = ff_default_query_formats(ctx)) < 0) |
257 | ✗ | return ret; | |
258 | } | ||
259 | |||
260 | 5208 | return 0; | |
261 | } | ||
262 | |||
263 | 1219 | static int asink_query_formats(AVFilterContext *ctx) | |
264 | { | ||
265 | 1219 | BufferSinkContext *buf = ctx->priv; | |
266 | 1219 | AVFilterFormats *formats = NULL; | |
267 | 1219 | AVChannelLayout layout = { 0 }; | |
268 | 1219 | AVFilterChannelLayouts *layouts = NULL; | |
269 | unsigned i; | ||
270 | int ret; | ||
271 | |||
272 |
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1219 | CHECK_LIST_SIZE(sample_fmts) |
273 |
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1219 | CHECK_LIST_SIZE(sample_rates) |
274 | #if FF_API_OLD_CHANNEL_LAYOUT | ||
275 |
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1219 | CHECK_LIST_SIZE(channel_layouts) |
276 |
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1219 | CHECK_LIST_SIZE(channel_counts) |
277 | #endif | ||
278 | |||
279 |
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1219 | if (buf->sample_fmts_size) { |
280 |
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138 | for (i = 0; i < NB_ITEMS(buf->sample_fmts); i++) |
281 |
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115 | if ((ret = ff_add_format(&formats, buf->sample_fmts[i])) < 0) |
282 | ✗ | return ret; | |
283 |
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23 | if ((ret = ff_set_common_formats(ctx, formats)) < 0) |
284 | ✗ | return ret; | |
285 | } | ||
286 | |||
287 | 1219 | if ( | |
288 | #if FF_API_OLD_CHANNEL_LAYOUT | ||
289 |
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1219 | buf->channel_layouts_size || buf->channel_counts_size || |
290 | #endif | ||
291 |
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1219 | buf->channel_layouts_str || buf->all_channel_counts) { |
292 | #if FF_API_OLD_CHANNEL_LAYOUT | ||
293 | 1219 | cleanup_redundant_layouts(ctx); | |
294 |
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1219 | for (i = 0; i < NB_ITEMS(buf->channel_layouts); i++) |
295 | ✗ | if ((ret = av_channel_layout_from_mask(&layout, buf->channel_layouts[i])) < 0 || | |
296 | ✗ | (ret = ff_add_channel_layout(&layouts, &layout) < 0)) | |
297 | ✗ | return ret; | |
298 |
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1219 | for (i = 0; i < NB_ITEMS(buf->channel_counts); i++) { |
299 | ✗ | layout = FF_COUNT2LAYOUT(buf->channel_counts[i]); | |
300 | ✗ | if ((ret = ff_add_channel_layout(&layouts, &layout)) < 0) | |
301 | ✗ | return ret; | |
302 | } | ||
303 | #endif | ||
304 |
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1219 | if (buf->channel_layouts_str) { |
305 | ✗ | const char *cur = buf->channel_layouts_str; | |
306 | |||
307 | #if FF_API_OLD_CHANNEL_LAYOUT | ||
308 | ✗ | if (layouts) | |
309 | ✗ | av_log(ctx, AV_LOG_WARNING, | |
310 | "Conflicting ch_layouts and list of channel_counts/channel_layouts. Ignoring the former\n"); | ||
311 | else | ||
312 | #endif | ||
313 | ✗ | while (cur) { | |
314 | ✗ | char *next = strchr(cur, '|'); | |
315 | ✗ | if (next) | |
316 | ✗ | *next++ = 0; | |
317 | |||
318 | ✗ | ret = av_channel_layout_from_string(&layout, cur); | |
319 | ✗ | if (ret < 0) { | |
320 | ✗ | av_log(ctx, AV_LOG_ERROR, "Error parsing channel layout: %s.\n", cur); | |
321 | ✗ | return ret; | |
322 | } | ||
323 | ✗ | ret = ff_add_channel_layout(&layouts, &layout); | |
324 | ✗ | av_channel_layout_uninit(&layout); | |
325 | ✗ | if (ret < 0) | |
326 | ✗ | return ret; | |
327 | |||
328 | ✗ | cur = next; | |
329 | } | ||
330 | } | ||
331 | |||
332 |
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1219 | if (buf->all_channel_counts) { |
333 |
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1219 | if (layouts) |
334 | ✗ | av_log(ctx, AV_LOG_WARNING, | |
335 | "Conflicting all_channel_counts and list in options\n"); | ||
336 |
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1219 | else if (!(layouts = ff_all_channel_counts())) |
337 | ✗ | return AVERROR(ENOMEM); | |
338 | } | ||
339 |
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1219 | if ((ret = ff_set_common_channel_layouts(ctx, layouts)) < 0) |
340 | ✗ | return ret; | |
341 | } | ||
342 | |||
343 |
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1219 | if (buf->sample_rates_size) { |
344 | ✗ | formats = NULL; | |
345 | ✗ | for (i = 0; i < NB_ITEMS(buf->sample_rates); i++) | |
346 | ✗ | if ((ret = ff_add_format(&formats, buf->sample_rates[i])) < 0) | |
347 | ✗ | return ret; | |
348 | ✗ | if ((ret = ff_set_common_samplerates(ctx, formats)) < 0) | |
349 | ✗ | return ret; | |
350 | } | ||
351 | |||
352 | 1219 | return 0; | |
353 | } | ||
354 | |||
355 | #define OFFSET(x) offsetof(BufferSinkContext, x) | ||
356 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM | ||
357 | static const AVOption buffersink_options[] = { | ||
358 | { "pix_fmts", "set the supported pixel formats", OFFSET(pixel_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS }, | ||
359 | { NULL }, | ||
360 | }; | ||
361 | #undef FLAGS | ||
362 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM | ||
363 | static const AVOption abuffersink_options[] = { | ||
364 | { "sample_fmts", "set the supported sample formats", OFFSET(sample_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS }, | ||
365 | { "sample_rates", "set the supported sample rates", OFFSET(sample_rates), AV_OPT_TYPE_BINARY, .flags = FLAGS }, | ||
366 | #if FF_API_OLD_CHANNEL_LAYOUT | ||
367 | { "channel_layouts", "set the supported channel layouts (deprecated, use ch_layouts)", | ||
368 | OFFSET(channel_layouts), AV_OPT_TYPE_BINARY, .flags = FLAGS | AV_OPT_FLAG_DEPRECATED }, | ||
369 | { "channel_counts", "set the supported channel counts (deprecated, use ch_layouts)", | ||
370 | OFFSET(channel_counts), AV_OPT_TYPE_BINARY, .flags = FLAGS | AV_OPT_FLAG_DEPRECATED }, | ||
371 | #endif | ||
372 | { "ch_layouts", "set a '|'-separated list of supported channel layouts", | ||
373 | OFFSET(channel_layouts_str), AV_OPT_TYPE_STRING, .flags = FLAGS }, | ||
374 | { "all_channel_counts", "accept all channel counts", OFFSET(all_channel_counts), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS }, | ||
375 | { NULL }, | ||
376 | }; | ||
377 | #undef FLAGS | ||
378 | |||
379 | AVFILTER_DEFINE_CLASS(buffersink); | ||
380 | AVFILTER_DEFINE_CLASS(abuffersink); | ||
381 | |||
382 | const AVFilter ff_vsink_buffer = { | ||
383 | .name = "buffersink", | ||
384 | .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them available to the end of the filter graph."), | ||
385 | .priv_size = sizeof(BufferSinkContext), | ||
386 | .priv_class = &buffersink_class, | ||
387 | .init = common_init, | ||
388 | .activate = activate, | ||
389 | FILTER_INPUTS(ff_video_default_filterpad), | ||
390 | .outputs = NULL, | ||
391 | FILTER_QUERY_FUNC(vsink_query_formats), | ||
392 | }; | ||
393 | |||
394 | const AVFilter ff_asink_abuffer = { | ||
395 | .name = "abuffersink", | ||
396 | .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."), | ||
397 | .priv_class = &abuffersink_class, | ||
398 | .priv_size = sizeof(BufferSinkContext), | ||
399 | .init = common_init, | ||
400 | .activate = activate, | ||
401 | FILTER_INPUTS(ff_audio_default_filterpad), | ||
402 | .outputs = NULL, | ||
403 | FILTER_QUERY_FUNC(asink_query_formats), | ||
404 | }; | ||
405 |