FFmpeg coverage

Line	Branch	Exec	Source
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			#include "libavutil/avstring.h"
20			#include "libavutil/internal.h"
21			#include "libavutil/mem.h"
22			#include "libavutil/opt.h"
23			#include "avfilter.h"
24			#include "audio.h"
25			#include "filters.h"
26			#include "formats.h"
27			#include "framesync.h"
28			#include "internal.h"
29			#include "video.h"
30
31			typedef struct StreamSelectContext {
32			const AVClass *class;
33			int nb_inputs;
34			char *map_str;
35			int *map;
36			int nb_map;
37			int is_audio;
38			int64_t *last_pts;
39			AVFrame **frames;
40			FFFrameSync fs;
41			} StreamSelectContext;
42
43			#define OFFSET(x) offsetof(StreamSelectContext, x)
44			#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
45			#define TFLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
46			static const AVOption streamselect_options[] = {
47			{ "inputs", "number of input streams", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags=FLAGS },
48			{ "map", "input indexes to remap to outputs", OFFSET(map_str), AV_OPT_TYPE_STRING, {.str=NULL}, .flags=TFLAGS },
49			{ NULL }
50			};
51
52			AVFILTER_DEFINE_CLASS_EXT(streamselect, "(a)streamselect", streamselect_options);
53
54		✗	static int process_frame(FFFrameSync *fs)
55			{
56		✗	AVFilterContext *ctx = fs->parent;
57		✗	StreamSelectContext *s = fs->opaque;
58		✗	AVFrame **in = s->frames;
59		✗	int i, j, ret = 0, have_out = 0;
60
61		✗	for (i = 0; i < ctx->nb_inputs; i++) {
62		✗	if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
63		✗	return ret;
64			}
65
66		✗	for (j = 0; j < ctx->nb_inputs; j++) {
67		✗	for (i = 0; i < s->nb_map; i++) {
68		✗	if (s->map[i] == j) {
69			AVFrame *out;
70
71		✗	if (s->is_audio && s->last_pts[j] == in[j]->pts &&
72		✗	ctx->outputs[i]->frame_count_in > 0)
73		✗	continue;
74		✗	out = av_frame_clone(in[j]);
75		✗	if (!out)
76		✗	return AVERROR(ENOMEM);
77
78		✗	out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, ctx->outputs[i]->time_base);
79		✗	s->last_pts[j] = in[j]->pts;
80		✗	ret = ff_filter_frame(ctx->outputs[i], out);
81		✗	have_out = 1;
82		✗	if (ret < 0)
83		✗	return ret;
84			}
85			}
86			}
87
88		✗	if (!have_out)
89		✗	ff_filter_set_ready(ctx, 100);
90		✗	return ret;
91			}
92
93		✗	static int activate(AVFilterContext *ctx)
94			{
95		✗	StreamSelectContext *s = ctx->priv;
96		✗	return ff_framesync_activate(&s->fs);
97			}
98
99		✗	static int config_output(AVFilterLink *outlink)
100			{
101		✗	AVFilterContext *ctx = outlink->src;
102		✗	StreamSelectContext *s = ctx->priv;
103		✗	const int outlink_idx = FF_OUTLINK_IDX(outlink);
104		✗	const int inlink_idx = s->map[outlink_idx];
105		✗	AVFilterLink *inlink = ctx->inputs[inlink_idx];
106			FFFrameSyncIn *in;
107			int i, ret;
108
109		✗	av_log(ctx, AV_LOG_VERBOSE, "config output link %d "
110			"with settings from input link %d\n",
111			outlink_idx, inlink_idx);
112
113		✗	switch (outlink->type) {
114		✗	case AVMEDIA_TYPE_VIDEO:
115		✗	outlink->w = inlink->w;
116		✗	outlink->h = inlink->h;
117		✗	outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
118		✗	outlink->frame_rate = inlink->frame_rate;
119		✗	break;
120		✗	case AVMEDIA_TYPE_AUDIO:
121		✗	outlink->sample_rate = inlink->sample_rate;
122		✗	outlink->ch_layout.nb_channels = inlink->ch_layout.nb_channels;
123		✗	break;
124			}
125
126		✗	outlink->time_base = inlink->time_base;
127		✗	outlink->format = inlink->format;
128
129		✗	if (s->fs.opaque == s)
130		✗	return 0;
131
132		✗	if ((ret = ff_framesync_init(&s->fs, ctx, ctx->nb_inputs)) < 0)
133		✗	return ret;
134
135		✗	in = s->fs.in;
136		✗	s->fs.opaque = s;
137		✗	s->fs.on_event = process_frame;
138
139		✗	for (i = 0; i < ctx->nb_inputs; i++) {
140		✗	in[i].time_base = ctx->inputs[i]->time_base;
141		✗	in[i].sync = 1;
142		✗	in[i].before = EXT_STOP;
143		✗	in[i].after = EXT_STOP;
144			}
145
146		✗	s->frames = av_calloc(ctx->nb_inputs, sizeof(*s->frames));
147		✗	if (!s->frames)
148		✗	return AVERROR(ENOMEM);
149
150		✗	return ff_framesync_configure(&s->fs);
151			}
152
153		✗	static int parse_definition(AVFilterContext *ctx, int nb_pads, int is_input, int is_audio)
154			{
155		✗	const char *padtype = is_input ? "in" : "out";
156		✗	int i = 0, ret = 0;
157
158		✗	for (i = 0; i < nb_pads; i++) {
159		✗	AVFilterPad pad = { 0 };
160
161		✗	pad.type = is_audio ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
162
163		✗	pad.name = av_asprintf("%sput%d", padtype, i);
164		✗	if (!pad.name)
165		✗	return AVERROR(ENOMEM);
166
167		✗	av_log(ctx, AV_LOG_DEBUG, "Add %s pad %s\n", padtype, pad.name);
168
169		✗	if (is_input) {
170		✗	ret = ff_append_inpad_free_name(ctx, &pad);
171			} else {
172		✗	pad.config_props = config_output;
173		✗	ret = ff_append_outpad_free_name(ctx, &pad);
174			}
175		✗	if (ret < 0)
176		✗	return ret;
177			}
178
179		✗	return 0;
180			}
181
182		✗	static int parse_mapping(AVFilterContext *ctx, const char *map)
183			{
184		✗	StreamSelectContext *s = ctx->priv;
185			int *new_map;
186		✗	int new_nb_map = 0;
187
188		✗	if (!map) {
189		✗	av_log(ctx, AV_LOG_ERROR, "mapping definition is not set\n");
190		✗	return AVERROR(EINVAL);
191			}
192
193		✗	new_map = av_calloc(s->nb_inputs, sizeof(*new_map));
194		✗	if (!new_map)
195		✗	return AVERROR(ENOMEM);
196
197		✗	while (1) {
198			char *p;
199		✗	const int n = strtol(map, &p, 0);
200
201		✗	av_log(ctx, AV_LOG_DEBUG, "n=%d map=%p p=%p\n", n, map, p);
202
203		✗	if (map == p)
204		✗	break;
205		✗	map = p;
206
207		✗	if (new_nb_map >= s->nb_inputs) {
208		✗	av_log(ctx, AV_LOG_ERROR, "Unable to map more than the %d "
209			"input pads available\n", s->nb_inputs);
210		✗	av_free(new_map);
211		✗	return AVERROR(EINVAL);
212			}
213
214		✗	if (n < 0 || n >= ctx->nb_inputs) {
215		✗	av_log(ctx, AV_LOG_ERROR, "Input stream index %d doesn't exist "
216			"(there is only %d input streams defined)\n",
217			n, s->nb_inputs);
218		✗	av_free(new_map);
219		✗	return AVERROR(EINVAL);
220			}
221
222		✗	av_log(ctx, AV_LOG_VERBOSE, "Map input stream %d to output stream %d\n", n, new_nb_map);
223		✗	new_map[new_nb_map++] = n;
224			}
225
226		✗	if (!new_nb_map) {
227		✗	av_log(ctx, AV_LOG_ERROR, "invalid mapping\n");
228		✗	av_free(new_map);
229		✗	return AVERROR(EINVAL);
230			}
231
232		✗	av_freep(&s->map);
233		✗	s->map = new_map;
234		✗	s->nb_map = new_nb_map;
235
236		✗	av_log(ctx, AV_LOG_VERBOSE, "%d map set\n", s->nb_map);
237
238		✗	return 0;
239			}
240
241		✗	static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
242			char *res, int res_len, int flags)
243			{
244		✗	if (!strcmp(cmd, "map")) {
245		✗	int ret = parse_mapping(ctx, args);
246
247		✗	if (ret < 0)
248		✗	return ret;
249		✗	return ff_filter_config_links(ctx);
250			}
251		✗	return AVERROR(ENOSYS);
252			}
253
254		✗	static av_cold int init(AVFilterContext *ctx)
255			{
256		✗	StreamSelectContext *s = ctx->priv;
257		✗	int ret, nb_outputs = 0;
258		✗	char *map = s->map_str;
259
260		✗	if (!strcmp(ctx->filter->name, "astreamselect"))
261		✗	s->is_audio = 1;
262
263		✗	for (; map;) {
264			char *p;
265
266		✗	strtol(map, &p, 0);
267		✗	if (map == p)
268		✗	break;
269		✗	nb_outputs++;
270		✗	map = p;
271			}
272
273		✗	s->last_pts = av_calloc(s->nb_inputs, sizeof(*s->last_pts));
274		✗	if (!s->last_pts)
275		✗	return AVERROR(ENOMEM);
276
277		✗	if ((ret = parse_definition(ctx, s->nb_inputs, 1, s->is_audio)) < 0 ||
278		✗	(ret = parse_definition(ctx, nb_outputs, 0, s->is_audio)) < 0)
279		✗	return ret;
280
281		✗	av_log(ctx, AV_LOG_DEBUG, "Configured with %d inpad and %d outpad\n",
282			ctx->nb_inputs, ctx->nb_outputs);
283
284		✗	return parse_mapping(ctx, s->map_str);
285			}
286
287		✗	static av_cold void uninit(AVFilterContext *ctx)
288			{
289		✗	StreamSelectContext *s = ctx->priv;
290
291		✗	av_freep(&s->last_pts);
292		✗	av_freep(&s->map);
293		✗	av_freep(&s->frames);
294		✗	ff_framesync_uninit(&s->fs);
295		✗	}
296
297		✗	static int query_formats(AVFilterContext *ctx)
298			{
299			AVFilterFormats *formats;
300			int ret, i;
301
302		✗	for (i = 0; i < ctx->nb_inputs; i++) {
303		✗	formats = ff_all_formats(ctx->inputs[i]->type);
304		✗	if ((ret = ff_set_common_formats(ctx, formats)) < 0)
305		✗	return ret;
306
307		✗	if (ctx->inputs[i]->type == AVMEDIA_TYPE_AUDIO) {
308		✗	if ((ret = ff_set_common_all_samplerates (ctx)) < 0 ||
309		✗	(ret = ff_set_common_all_channel_counts(ctx)) < 0)
310		✗	return ret;
311			}
312			}
313
314		✗	return 0;
315			}
316
317			const AVFilter ff_vf_streamselect = {
318			.name = "streamselect",
319			.description = NULL_IF_CONFIG_SMALL("Select video streams"),
320			.init = init,
321			FILTER_QUERY_FUNC(query_formats),
322			.process_command = process_command,
323			.uninit = uninit,
324			.activate = activate,
325			.priv_size = sizeof(StreamSelectContext),
326			.priv_class = &streamselect_class,
327			.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_DYNAMIC_OUTPUTS,
328			};
329
330			const AVFilter ff_af_astreamselect = {
331			.name = "astreamselect",
332			.description = NULL_IF_CONFIG_SMALL("Select audio streams"),
333			.priv_class = &streamselect_class,
334			.init = init,
335			FILTER_QUERY_FUNC(query_formats),
336			.process_command = process_command,
337			.uninit = uninit,
338			.activate = activate,
339			.priv_size = sizeof(StreamSelectContext),
340			.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_DYNAMIC_OUTPUTS,
341			};
342