2 * Copyright (c) 2011 Stefano Sabatini
4 * This file is part of FFmpeg.
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.
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.
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
26 #include "libavutil/avassert.h"
27 #include "libavutil/channel_layout.h"
28 #include "libavutil/common.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/opt.h"
32 #define FF_INTERNAL_FIELDS 1
33 #include "framequeue.h"
37 #include "buffersink.h"
41 typedef struct BufferSinkContext {
43 unsigned warning_limit;
45 /* only used for video */
46 enum AVPixelFormat *pixel_fmts; ///< list of accepted pixel formats, must be terminated with -1
49 /* only used for audio */
50 enum AVSampleFormat *sample_fmts; ///< list of accepted sample formats, terminated by AV_SAMPLE_FMT_NONE
52 int64_t *channel_layouts; ///< list of accepted channel layouts, terminated by -1
53 int channel_layouts_size;
54 int *channel_counts; ///< list of accepted channel counts, terminated by -1
55 int channel_counts_size;
56 int all_channel_counts;
57 int *sample_rates; ///< list of accepted sample rates, terminated by -1
58 int sample_rates_size;
60 AVFrame *peeked_frame;
63 #define NB_ITEMS(list) (list ## _size / sizeof(*list))
65 int attribute_align_arg av_buffersink_get_frame(AVFilterContext *ctx, AVFrame *frame)
67 return av_buffersink_get_frame_flags(ctx, frame, 0);
70 static int return_or_keep_frame(BufferSinkContext *buf, AVFrame *out, AVFrame *in, int flags)
72 if ((flags & AV_BUFFERSINK_FLAG_PEEK)) {
73 buf->peeked_frame = in;
74 return out ? av_frame_ref(out, in) : 0;
77 buf->peeked_frame = NULL;
78 av_frame_move_ref(out, in);
84 static int get_frame_internal(AVFilterContext *ctx, AVFrame *frame, int flags, int samples)
86 BufferSinkContext *buf = ctx->priv;
87 AVFilterLink *inlink = ctx->inputs[0];
92 if (buf->peeked_frame)
93 return return_or_keep_frame(buf, frame, buf->peeked_frame, flags);
96 ret = samples ? ff_inlink_consume_samples(inlink, samples, samples, &cur_frame) :
97 ff_inlink_consume_frame(inlink, &cur_frame);
101 /* TODO return the frame instead of copying it */
102 return return_or_keep_frame(buf, frame, cur_frame, flags);
103 } else if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
105 } else if ((flags & AV_BUFFERSINK_FLAG_NO_REQUEST)) {
106 return AVERROR(EAGAIN);
107 } else if (inlink->frame_wanted_out) {
108 ret = ff_filter_graph_run_once(ctx->graph);
112 ff_inlink_request_frame(inlink);
117 int attribute_align_arg av_buffersink_get_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags)
119 return get_frame_internal(ctx, frame, flags, ctx->inputs[0]->min_samples);
122 int attribute_align_arg av_buffersink_get_samples(AVFilterContext *ctx,
123 AVFrame *frame, int nb_samples)
125 return get_frame_internal(ctx, frame, 0, nb_samples);
128 AVBufferSinkParams *av_buffersink_params_alloc(void)
130 static const int pixel_fmts[] = { AV_PIX_FMT_NONE };
131 AVBufferSinkParams *params = av_malloc(sizeof(AVBufferSinkParams));
135 params->pixel_fmts = pixel_fmts;
139 AVABufferSinkParams *av_abuffersink_params_alloc(void)
141 AVABufferSinkParams *params = av_mallocz(sizeof(AVABufferSinkParams));
148 static av_cold int common_init(AVFilterContext *ctx)
150 BufferSinkContext *buf = ctx->priv;
152 buf->warning_limit = 100;
156 static int activate(AVFilterContext *ctx)
158 BufferSinkContext *buf = ctx->priv;
160 if (buf->warning_limit &&
161 ff_framequeue_queued_frames(&ctx->inputs[0]->fifo) >= buf->warning_limit) {
162 av_log(ctx, AV_LOG_WARNING,
163 "%d buffers queued in %s, something may be wrong.\n",
165 (char *)av_x_if_null(ctx->name, ctx->filter->name));
166 buf->warning_limit *= 10;
169 /* The frame is queued, the rest is up to get_frame_internal */
173 void av_buffersink_set_frame_size(AVFilterContext *ctx, unsigned frame_size)
175 AVFilterLink *inlink = ctx->inputs[0];
177 inlink->min_samples = inlink->max_samples =
178 inlink->partial_buf_size = frame_size;
181 #define MAKE_AVFILTERLINK_ACCESSOR(type, field) \
182 type av_buffersink_get_##field(const AVFilterContext *ctx) { \
183 av_assert0(ctx->filter->activate == activate); \
184 return ctx->inputs[0]->field; \
187 MAKE_AVFILTERLINK_ACCESSOR(enum AVMediaType , type )
188 MAKE_AVFILTERLINK_ACCESSOR(AVRational , time_base )
189 MAKE_AVFILTERLINK_ACCESSOR(int , format )
191 MAKE_AVFILTERLINK_ACCESSOR(AVRational , frame_rate )
192 MAKE_AVFILTERLINK_ACCESSOR(int , w )
193 MAKE_AVFILTERLINK_ACCESSOR(int , h )
194 MAKE_AVFILTERLINK_ACCESSOR(AVRational , sample_aspect_ratio)
196 MAKE_AVFILTERLINK_ACCESSOR(int , channels )
197 MAKE_AVFILTERLINK_ACCESSOR(uint64_t , channel_layout )
198 MAKE_AVFILTERLINK_ACCESSOR(int , sample_rate )
200 MAKE_AVFILTERLINK_ACCESSOR(AVBufferRef * , hw_frames_ctx )
202 static av_cold int vsink_init(AVFilterContext *ctx, void *opaque)
204 BufferSinkContext *buf = ctx->priv;
205 AVBufferSinkParams *params = opaque;
209 if ((ret = av_opt_set_int_list(buf, "pix_fmts", params->pixel_fmts, AV_PIX_FMT_NONE, 0)) < 0)
213 return common_init(ctx);
216 #define CHECK_LIST_SIZE(field) \
217 if (buf->field ## _size % sizeof(*buf->field)) { \
218 av_log(ctx, AV_LOG_ERROR, "Invalid size for " #field ": %d, " \
219 "should be multiple of %d\n", \
220 buf->field ## _size, (int)sizeof(*buf->field)); \
221 return AVERROR(EINVAL); \
223 static int vsink_query_formats(AVFilterContext *ctx)
225 BufferSinkContext *buf = ctx->priv;
226 AVFilterFormats *formats = NULL;
230 CHECK_LIST_SIZE(pixel_fmts)
231 if (buf->pixel_fmts_size) {
232 for (i = 0; i < NB_ITEMS(buf->pixel_fmts); i++)
233 if ((ret = ff_add_format(&formats, buf->pixel_fmts[i])) < 0)
235 if ((ret = ff_set_common_formats(ctx, formats)) < 0)
238 if ((ret = ff_default_query_formats(ctx)) < 0)
245 static av_cold int asink_init(AVFilterContext *ctx, void *opaque)
247 BufferSinkContext *buf = ctx->priv;
248 AVABufferSinkParams *params = opaque;
252 if ((ret = av_opt_set_int_list(buf, "sample_fmts", params->sample_fmts, AV_SAMPLE_FMT_NONE, 0)) < 0 ||
253 (ret = av_opt_set_int_list(buf, "sample_rates", params->sample_rates, -1, 0)) < 0 ||
254 (ret = av_opt_set_int_list(buf, "channel_layouts", params->channel_layouts, -1, 0)) < 0 ||
255 (ret = av_opt_set_int_list(buf, "channel_counts", params->channel_counts, -1, 0)) < 0 ||
256 (ret = av_opt_set_int(buf, "all_channel_counts", params->all_channel_counts, 0)) < 0)
259 return common_init(ctx);
262 static int asink_query_formats(AVFilterContext *ctx)
264 BufferSinkContext *buf = ctx->priv;
265 AVFilterFormats *formats = NULL;
266 AVFilterChannelLayouts *layouts = NULL;
270 CHECK_LIST_SIZE(sample_fmts)
271 CHECK_LIST_SIZE(sample_rates)
272 CHECK_LIST_SIZE(channel_layouts)
273 CHECK_LIST_SIZE(channel_counts)
275 if (buf->sample_fmts_size) {
276 for (i = 0; i < NB_ITEMS(buf->sample_fmts); i++)
277 if ((ret = ff_add_format(&formats, buf->sample_fmts[i])) < 0)
279 if ((ret = ff_set_common_formats(ctx, formats)) < 0)
283 if (buf->channel_layouts_size || buf->channel_counts_size ||
284 buf->all_channel_counts) {
285 for (i = 0; i < NB_ITEMS(buf->channel_layouts); i++)
286 if ((ret = ff_add_channel_layout(&layouts, buf->channel_layouts[i])) < 0)
288 for (i = 0; i < NB_ITEMS(buf->channel_counts); i++)
289 if ((ret = ff_add_channel_layout(&layouts, FF_COUNT2LAYOUT(buf->channel_counts[i]))) < 0)
291 if (buf->all_channel_counts) {
293 av_log(ctx, AV_LOG_WARNING,
294 "Conflicting all_channel_counts and list in options\n");
295 else if (!(layouts = ff_all_channel_counts()))
296 return AVERROR(ENOMEM);
298 if ((ret = ff_set_common_channel_layouts(ctx, layouts)) < 0)
302 if (buf->sample_rates_size) {
304 for (i = 0; i < NB_ITEMS(buf->sample_rates); i++)
305 if ((ret = ff_add_format(&formats, buf->sample_rates[i])) < 0)
307 if ((ret = ff_set_common_samplerates(ctx, formats)) < 0)
314 #define OFFSET(x) offsetof(BufferSinkContext, x)
315 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
316 static const AVOption buffersink_options[] = {
317 { "pix_fmts", "set the supported pixel formats", OFFSET(pixel_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
321 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM
322 static const AVOption abuffersink_options[] = {
323 { "sample_fmts", "set the supported sample formats", OFFSET(sample_fmts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
324 { "sample_rates", "set the supported sample rates", OFFSET(sample_rates), AV_OPT_TYPE_BINARY, .flags = FLAGS },
325 { "channel_layouts", "set the supported channel layouts", OFFSET(channel_layouts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
326 { "channel_counts", "set the supported channel counts", OFFSET(channel_counts), AV_OPT_TYPE_BINARY, .flags = FLAGS },
327 { "all_channel_counts", "accept all channel counts", OFFSET(all_channel_counts), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
332 AVFILTER_DEFINE_CLASS(buffersink);
333 AVFILTER_DEFINE_CLASS(abuffersink);
335 static const AVFilterPad avfilter_vsink_buffer_inputs[] = {
338 .type = AVMEDIA_TYPE_VIDEO,
343 AVFilter ff_vsink_buffer = {
344 .name = "buffersink",
345 .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them available to the end of the filter graph."),
346 .priv_size = sizeof(BufferSinkContext),
347 .priv_class = &buffersink_class,
348 .init_opaque = vsink_init,
349 .query_formats = vsink_query_formats,
350 .activate = activate,
351 .inputs = avfilter_vsink_buffer_inputs,
355 static const AVFilterPad avfilter_asink_abuffer_inputs[] = {
358 .type = AVMEDIA_TYPE_AUDIO,
363 AVFilter ff_asink_abuffer = {
364 .name = "abuffersink",
365 .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them available to the end of the filter graph."),
366 .priv_class = &abuffersink_class,
367 .priv_size = sizeof(BufferSinkContext),
368 .init_opaque = asink_init,
369 .query_formats = asink_query_formats,
370 .activate = activate,
371 .inputs = avfilter_asink_abuffer_inputs,