FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2012 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			* audio to video multimedia filter
24			*/
25
26			#include "config_components.h"
27
28			#include "libavutil/avassert.h"
29			#include "libavutil/avstring.h"
30			#include "libavutil/channel_layout.h"
31			#include "libavutil/intreadwrite.h"
32			#include "libavutil/mem.h"
33			#include "libavutil/opt.h"
34			#include "libavutil/parseutils.h"
35			#include "avfilter.h"
36			#include "filters.h"
37			#include "formats.h"
38			#include "audio.h"
39			#include "video.h"
40			#include "internal.h"
41
42			enum ShowWavesMode {
43			MODE_POINT,
44			MODE_LINE,
45			MODE_P2P,
46			MODE_CENTERED_LINE,
47			MODE_NB,
48			};
49
50			enum ShowWavesScale {
51			SCALE_LIN,
52			SCALE_LOG,
53			SCALE_SQRT,
54			SCALE_CBRT,
55			SCALE_NB,
56			};
57
58			enum ShowWavesDrawMode {
59			DRAW_SCALE,
60			DRAW_FULL,
61			DRAW_NB,
62			};
63
64			enum ShowWavesFilterMode {
65			FILTER_AVERAGE,
66			FILTER_PEAK,
67			FILTER_NB,
68			};
69
70			struct frame_node {
71			AVFrame *frame;
72			struct frame_node *next;
73			};
74
75			typedef struct ShowWavesContext {
76			const AVClass *class;
77			int w, h;
78			AVRational rate;
79			char *colors;
80			int buf_idx;
81			int16_t *buf_idy; /* y coordinate of previous sample for each channel */
82			int16_t *history;
83			int history_nb_samples;
84			int history_index;
85			AVFrame *outpicref;
86			AVRational n, q, c;
87			int pixstep;
88			int mode; ///< ShowWavesMode
89			int scale; ///< ShowWavesScale
90			int draw_mode; ///< ShowWavesDrawMode
91			int split_channels;
92			int filter_mode;
93			uint8_t *fg;
94
95			int (*get_h)(int16_t sample, int height);
96			void (*draw_sample)(uint8_t *buf, int height, int linesize,
97			int16_t *prev_y, const uint8_t color[4], int h);
98
99			/* single picture */
100			int single_pic;
101			struct frame_node *audio_frames;
102			struct frame_node *last_frame;
103			int64_t total_samples;
104			int64_t *sum; /* abs sum of the samples per channel */
105			} ShowWavesContext;
106
107			#define OFFSET(x) offsetof(ShowWavesContext, x)
108			#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
109
110			static const AVOption showwaves_options[] = {
111			{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
112			{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
113			{ "mode", "select display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_POINT}, 0, MODE_NB-1, .flags=FLAGS, .unit="mode"},
114			{ "point", "draw a point for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_POINT}, .flags=FLAGS, .unit="mode"},
115			{ "line", "draw a line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_LINE}, .flags=FLAGS, .unit="mode"},
116			{ "p2p", "draw a line between samples", 0, AV_OPT_TYPE_CONST, {.i64=MODE_P2P}, .flags=FLAGS, .unit="mode"},
117			{ "cline", "draw a centered line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CENTERED_LINE}, .flags=FLAGS, .unit="mode"},
118			{ "n", "set how many samples to show in the same point", OFFSET(n), AV_OPT_TYPE_RATIONAL, {.i64 = 0}, 0, INT_MAX, FLAGS },
119			{ "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS },
120			{ "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS },
121			{ "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
122			{ "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
123			{ "scale", "set amplitude scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, SCALE_NB-1, FLAGS, .unit="scale" },
124			{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LIN}, .flags=FLAGS, .unit="scale"},
125			{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LOG}, .flags=FLAGS, .unit="scale"},
126			{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_SQRT}, .flags=FLAGS, .unit="scale"},
127			{ "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_CBRT}, .flags=FLAGS, .unit="scale"},
128			{ "draw", "set draw mode", OFFSET(draw_mode), AV_OPT_TYPE_INT, {.i64 = DRAW_SCALE}, 0, DRAW_NB-1, FLAGS, .unit="draw" },
129			{ "scale", "scale pixel values for each drawn sample", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_SCALE}, .flags=FLAGS, .unit="draw"},
130			{ "full", "draw every pixel for sample directly", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_FULL}, .flags=FLAGS, .unit="draw"},
131			{ NULL }
132			};
133
134			AVFILTER_DEFINE_CLASS(showwaves);
135
136		✗	static av_cold void uninit(AVFilterContext *ctx)
137			{
138		✗	ShowWavesContext *showwaves = ctx->priv;
139
140		✗	av_frame_free(&showwaves->outpicref);
141		✗	av_freep(&showwaves->buf_idy);
142		✗	av_freep(&showwaves->history);
143		✗	av_freep(&showwaves->fg);
144
145		✗	if (showwaves->single_pic) {
146		✗	struct frame_node *node = showwaves->audio_frames;
147		✗	while (node) {
148		✗	struct frame_node *tmp = node;
149
150		✗	node = node->next;
151		✗	av_frame_free(&tmp->frame);
152		✗	av_freep(&tmp);
153			}
154		✗	av_freep(&showwaves->sum);
155		✗	showwaves->last_frame = NULL;
156			}
157		✗	}
158
159		✗	static int query_formats(AVFilterContext *ctx)
160			{
161		✗	AVFilterFormats *formats = NULL;
162		✗	AVFilterChannelLayouts *layouts = NULL;
163		✗	AVFilterLink *inlink = ctx->inputs[0];
164		✗	AVFilterLink *outlink = ctx->outputs[0];
165			static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
166			static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
167			int ret;
168
169			/* set input audio formats */
170		✗	formats = ff_make_format_list(sample_fmts);
171		✗	if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0)
172		✗	return ret;
173
174		✗	layouts = ff_all_channel_layouts();
175		✗	if ((ret = ff_channel_layouts_ref(layouts, &inlink->outcfg.channel_layouts)) < 0)
176		✗	return ret;
177
178		✗	formats = ff_all_samplerates();
179		✗	if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
180		✗	return ret;
181
182			/* set output video format */
183		✗	formats = ff_make_format_list(pix_fmts);
184		✗	if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
185		✗	return ret;
186
187		✗	return 0;
188			}
189
190		✗	static int get_lin_h(int16_t sample, int height)
191			{
192		✗	return height/2 - av_rescale(sample, height/2, INT16_MAX);
193			}
194
195		✗	static int get_lin_h2(int16_t sample, int height)
196			{
197		✗	return av_rescale(FFABS(sample), height, INT16_MAX);
198			}
199
200		✗	static int get_log_h(int16_t sample, int height)
201			{
202		✗	return height/2 - FFSIGN(sample) * (log10(1 + FFABS(sample)) * (height/2) / log10(1 + INT16_MAX));
203			}
204
205		✗	static int get_log_h2(int16_t sample, int height)
206			{
207		✗	return log10(1 + FFABS(sample)) * height / log10(1 + INT16_MAX);
208			}
209
210		✗	static int get_sqrt_h(int16_t sample, int height)
211			{
212		✗	return height/2 - FFSIGN(sample) * (sqrt(FFABS(sample)) * (height/2) / sqrt(INT16_MAX));
213			}
214
215		✗	static int get_sqrt_h2(int16_t sample, int height)
216			{
217		✗	return sqrt(FFABS(sample)) * height / sqrt(INT16_MAX);
218			}
219
220		✗	static int get_cbrt_h(int16_t sample, int height)
221			{
222		✗	return height/2 - FFSIGN(sample) * (cbrt(FFABS(sample)) * (height/2) / cbrt(INT16_MAX));
223			}
224
225		✗	static int get_cbrt_h2(int16_t sample, int height)
226			{
227		✗	return cbrt(FFABS(sample)) * height / cbrt(INT16_MAX);
228			}
229
230		✗	static void draw_sample_point_rgba_scale(uint8_t *buf, int height, int linesize,
231			int16_t *prev_y,
232			const uint8_t color[4], int h)
233			{
234		✗	if (h >= 0 && h < height) {
235		✗	buf[h * linesize + 0] += color[0];
236		✗	buf[h * linesize + 1] += color[1];
237		✗	buf[h * linesize + 2] += color[2];
238		✗	buf[h * linesize + 3] += color[3];
239			}
240		✗	}
241
242		✗	static void draw_sample_point_rgba_full(uint8_t *buf, int height, int linesize,
243			int16_t *prev_y,
244			const uint8_t color[4], int h)
245			{
246		✗	uint32_t clr = AV_RN32(color);
247		✗	if (h >= 0 && h < height)
248		✗	AV_WN32(buf + h * linesize, clr);
249		✗	}
250
251		✗	static void draw_sample_line_rgba_scale(uint8_t *buf, int height, int linesize,
252			int16_t *prev_y,
253			const uint8_t color[4], int h)
254			{
255		✗	int start = height/2;
256		✗	int end = av_clip(h, 0, height-1);
257			uint8_t *bufk;
258		✗	if (start > end)
259		✗	FFSWAP(int16_t, start, end);
260		✗	bufk = buf + start * linesize;
261		✗	for (int k = start; k < end; k++, bufk += linesize) {
262		✗	bufk[0] += color[0];
263		✗	bufk[1] += color[1];
264		✗	bufk[2] += color[2];
265		✗	bufk[3] += color[3];
266			}
267		✗	}
268
269		✗	static void draw_sample_line_rgba_full(uint8_t *buf, int height, int linesize,
270			int16_t *prev_y,
271			const uint8_t color[4], int h)
272			{
273		✗	int start = height/2;
274		✗	int end = av_clip(h, 0, height-1);
275		✗	uint32_t clr = AV_RN32(color);
276			uint8_t *bufk;
277		✗	if (start > end)
278		✗	FFSWAP(int16_t, start, end);
279		✗	bufk = buf + start * linesize;
280		✗	for (int k = start; k < end; k++, bufk += linesize)
281		✗	AV_WN32(bufk, clr);
282		✗	}
283
284		✗	static void draw_sample_p2p_rgba_scale(uint8_t *buf, int height, int linesize,
285			int16_t *prev_y,
286			const uint8_t color[4], int h)
287			{
288		✗	if (h >= 0 && h < height) {
289		✗	buf[h * linesize + 0] += color[0];
290		✗	buf[h * linesize + 1] += color[1];
291		✗	buf[h * linesize + 2] += color[2];
292		✗	buf[h * linesize + 3] += color[3];
293		✗	if (*prev_y && h != *prev_y) {
294		✗	int start = *prev_y;
295			uint8_t *bufk;
296		✗	int end = av_clip(h, 0, height-1);
297		✗	if (start > end)
298		✗	FFSWAP(int16_t, start, end);
299		✗	bufk = buf + (start + 1) * linesize;
300		✗	for (int k = start + 1; k < end; k++, bufk += linesize) {
301		✗	bufk[0] += color[0];
302		✗	bufk[1] += color[1];
303		✗	bufk[2] += color[2];
304		✗	bufk[3] += color[3];
305			}
306			}
307			}
308		✗	*prev_y = h;
309		✗	}
310
311		✗	static void draw_sample_p2p_rgba_full(uint8_t *buf, int height, int linesize,
312			int16_t *prev_y,
313			const uint8_t color[4], int h)
314			{
315		✗	uint32_t clr = AV_RN32(color);
316		✗	if (h >= 0 && h < height) {
317		✗	AV_WN32(buf + h * linesize, clr);
318		✗	if (*prev_y && h != *prev_y) {
319		✗	int start = *prev_y;
320			uint8_t *bufk;
321		✗	int end = av_clip(h, 0, height-1);
322		✗	if (start > end)
323		✗	FFSWAP(int16_t, start, end);
324		✗	bufk = buf + (start + 1) * linesize;
325		✗	for (int k = start + 1; k < end; k++, bufk += linesize)
326		✗	AV_WN32(bufk, clr);
327			}
328			}
329		✗	*prev_y = h;
330		✗	}
331
332		✗	static void draw_sample_cline_rgba_scale(uint8_t *buf, int height, int linesize,
333			int16_t *prev_y,
334			const uint8_t color[4], int h)
335			{
336		✗	const int start = (height - h) / 2;
337		✗	const int end = start + h;
338		✗	uint8_t *bufk = buf + start * linesize;
339		✗	for (int k = start; k < end; k++, bufk += linesize) {
340		✗	bufk[0] += color[0];
341		✗	bufk[1] += color[1];
342		✗	bufk[2] += color[2];
343		✗	bufk[3] += color[3];
344			}
345		✗	}
346
347		✗	static void draw_sample_cline_rgba_full(uint8_t *buf, int height, int linesize,
348			int16_t *prev_y,
349			const uint8_t color[4], int h)
350			{
351		✗	uint32_t clr = AV_RN32(color);
352		✗	const int start = (height - h) / 2;
353		✗	const int end = start + h;
354		✗	uint8_t *bufk = buf + start * linesize;
355		✗	for (int k = start; k < end; k++, bufk += linesize)
356		✗	AV_WN32(bufk, clr);
357		✗	}
358
359		✗	static void draw_sample_point_gray(uint8_t *buf, int height, int linesize,
360			int16_t *prev_y,
361			const uint8_t color[4], int h)
362			{
363		✗	if (h >= 0 && h < height)
364		✗	buf[h * linesize] += color[0];
365		✗	}
366
367		✗	static void draw_sample_line_gray(uint8_t *buf, int height, int linesize,
368			int16_t *prev_y,
369			const uint8_t color[4], int h)
370			{
371			int k;
372		✗	int start = height/2;
373		✗	int end = av_clip(h, 0, height-1);
374		✗	if (start > end)
375		✗	FFSWAP(int16_t, start, end);
376		✗	for (k = start; k < end; k++)
377		✗	buf[k * linesize] += color[0];
378		✗	}
379
380		✗	static void draw_sample_p2p_gray(uint8_t *buf, int height, int linesize,
381			int16_t *prev_y,
382			const uint8_t color[4], int h)
383			{
384			int k;
385		✗	if (h >= 0 && h < height) {
386		✗	buf[h * linesize] += color[0];
387		✗	if (*prev_y && h != *prev_y) {
388		✗	int start = *prev_y;
389		✗	int end = av_clip(h, 0, height-1);
390		✗	if (start > end)
391		✗	FFSWAP(int16_t, start, end);
392		✗	for (k = start + 1; k < end; k++)
393		✗	buf[k * linesize] += color[0];
394			}
395			}
396		✗	*prev_y = h;
397		✗	}
398
399		✗	static void draw_sample_cline_gray(uint8_t *buf, int height, int linesize,
400			int16_t *prev_y,
401			const uint8_t color[4], int h)
402			{
403			int k;
404		✗	const int start = (height - h) / 2;
405		✗	const int end = start + h;
406		✗	for (k = start; k < end; k++)
407		✗	buf[k * linesize] += color[0];
408		✗	}
409
410		✗	static int config_output(AVFilterLink *outlink)
411			{
412		✗	AVFilterContext *ctx = outlink->src;
413		✗	AVFilterLink *inlink = ctx->inputs[0];
414		✗	ShowWavesContext *showwaves = ctx->priv;
415		✗	int nb_channels = inlink->ch_layout.nb_channels;
416		✗	char *colors, *saveptr = NULL;
417			uint8_t x;
418			int ch;
419
420		✗	showwaves->q = av_make_q(0, 1);
421		✗	showwaves->c = av_make_q(0, 1);
422
423		✗	if (showwaves->single_pic) {
424		✗	showwaves->n = av_make_q(1, 1);
425		✗	outlink->frame_rate = av_make_q(1, 1);
426			} else {
427		✗	if (!showwaves->n.num || !showwaves->n.den) {
428		✗	showwaves->n = av_mul_q(av_make_q(inlink->sample_rate,
429			showwaves->w), av_inv_q(showwaves->rate));
430		✗	outlink->frame_rate = showwaves->rate;
431			} else {
432		✗	outlink->frame_rate = av_div_q(av_make_q(inlink->sample_rate, showwaves->w), showwaves->n);
433			}
434			}
435
436		✗	showwaves->buf_idx = 0;
437		✗	if (!FF_ALLOCZ_TYPED_ARRAY(showwaves->buf_idy, nb_channels)) {
438		✗	av_log(ctx, AV_LOG_ERROR, "Could not allocate showwaves buffer\n");
439		✗	return AVERROR(ENOMEM);
440			}
441
442		✗	showwaves->history_nb_samples = av_rescale(showwaves->w * nb_channels * 2,
443		✗	showwaves->n.num, showwaves->n.den);
444		✗	if (showwaves->history_nb_samples <= 0)
445		✗	return AVERROR(EINVAL);
446		✗	showwaves->history = av_calloc(showwaves->history_nb_samples,
447			sizeof(*showwaves->history));
448		✗	if (!showwaves->history)
449		✗	return AVERROR(ENOMEM);
450
451		✗	outlink->time_base = av_inv_q(outlink->frame_rate);
452		✗	outlink->w = showwaves->w;
453		✗	outlink->h = showwaves->h;
454		✗	outlink->sample_aspect_ratio = (AVRational){1,1};
455
456		✗	av_log(ctx, AV_LOG_VERBOSE, "s:%dx%d r:%f n:%f\n",
457			showwaves->w, showwaves->h, av_q2d(outlink->frame_rate), av_q2d(showwaves->n));
458
459		✗	switch (outlink->format) {
460		✗	case AV_PIX_FMT_GRAY8:
461		✗	switch (showwaves->mode) {
462		✗	case MODE_POINT: showwaves->draw_sample = draw_sample_point_gray; break;
463		✗	case MODE_LINE: showwaves->draw_sample = draw_sample_line_gray; break;
464		✗	case MODE_P2P: showwaves->draw_sample = draw_sample_p2p_gray; break;
465		✗	case MODE_CENTERED_LINE: showwaves->draw_sample = draw_sample_cline_gray; break;
466		✗	default:
467		✗	return AVERROR_BUG;
468			}
469		✗	showwaves->pixstep = 1;
470		✗	break;
471		✗	case AV_PIX_FMT_RGBA:
472		✗	switch (showwaves->mode) {
473		✗	case MODE_POINT: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_point_rgba_scale : draw_sample_point_rgba_full; break;
474		✗	case MODE_LINE: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_line_rgba_scale : draw_sample_line_rgba_full; break;
475		✗	case MODE_P2P: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_p2p_rgba_scale : draw_sample_p2p_rgba_full; break;
476		✗	case MODE_CENTERED_LINE: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_cline_rgba_scale : draw_sample_cline_rgba_full; break;
477		✗	default:
478		✗	return AVERROR_BUG;
479			}
480		✗	showwaves->pixstep = 4;
481		✗	break;
482			}
483
484		✗	switch (showwaves->scale) {
485		✗	case SCALE_LIN:
486		✗	switch (showwaves->mode) {
487		✗	case MODE_POINT:
488			case MODE_LINE:
489		✗	case MODE_P2P: showwaves->get_h = get_lin_h; break;
490		✗	case MODE_CENTERED_LINE: showwaves->get_h = get_lin_h2; break;
491		✗	default:
492		✗	return AVERROR_BUG;
493			}
494		✗	break;
495		✗	case SCALE_LOG:
496		✗	switch (showwaves->mode) {
497		✗	case MODE_POINT:
498			case MODE_LINE:
499		✗	case MODE_P2P: showwaves->get_h = get_log_h; break;
500		✗	case MODE_CENTERED_LINE: showwaves->get_h = get_log_h2; break;
501		✗	default:
502		✗	return AVERROR_BUG;
503			}
504		✗	break;
505		✗	case SCALE_SQRT:
506		✗	switch (showwaves->mode) {
507		✗	case MODE_POINT:
508			case MODE_LINE:
509		✗	case MODE_P2P: showwaves->get_h = get_sqrt_h; break;
510		✗	case MODE_CENTERED_LINE: showwaves->get_h = get_sqrt_h2; break;
511		✗	default:
512		✗	return AVERROR_BUG;
513			}
514		✗	break;
515		✗	case SCALE_CBRT:
516		✗	switch (showwaves->mode) {
517		✗	case MODE_POINT:
518			case MODE_LINE:
519		✗	case MODE_P2P: showwaves->get_h = get_cbrt_h; break;
520		✗	case MODE_CENTERED_LINE: showwaves->get_h = get_cbrt_h2; break;
521		✗	default:
522		✗	return AVERROR_BUG;
523			}
524		✗	break;
525			}
526
527		✗	showwaves->fg = av_malloc_array(nb_channels, 4 * sizeof(*showwaves->fg));
528		✗	if (!showwaves->fg)
529		✗	return AVERROR(ENOMEM);
530
531		✗	colors = av_strdup(showwaves->colors);
532		✗	if (!colors)
533		✗	return AVERROR(ENOMEM);
534
535		✗	if (showwaves->draw_mode == DRAW_SCALE) {
536			/* multiplication factor, pre-computed to avoid in-loop divisions */
537		✗	x = (showwaves->n.den * 255) / ((showwaves->split_channels ? 1 : nb_channels) * showwaves->n.num);
538			} else {
539		✗	x = 255;
540			}
541		✗	if (outlink->format == AV_PIX_FMT_RGBA) {
542		✗	uint8_t fg[4] = { 0xff, 0xff, 0xff, 0xff };
543
544		✗	for (ch = 0; ch < nb_channels; ch++) {
545			char *color;
546
547		✗	color = av_strtok(ch == 0 ? colors : NULL, " |", &saveptr);
548		✗	if (color)
549		✗	av_parse_color(fg, color, -1, ctx);
550		✗	showwaves->fg[4*ch + 0] = fg[0] * x / 255.;
551		✗	showwaves->fg[4*ch + 1] = fg[1] * x / 255.;
552		✗	showwaves->fg[4*ch + 2] = fg[2] * x / 255.;
553		✗	showwaves->fg[4*ch + 3] = fg[3] * x / 255.;
554			}
555			} else {
556		✗	for (ch = 0; ch < nb_channels; ch++)
557		✗	showwaves->fg[4 * ch + 0] = x;
558			}
559		✗	av_free(colors);
560
561		✗	return 0;
562			}
563
564		✗	inline static int push_frame(AVFilterLink *outlink, int i, int64_t pts)
565			{
566		✗	AVFilterContext *ctx = outlink->src;
567		✗	AVFilterLink *inlink = ctx->inputs[0];
568		✗	ShowWavesContext *showwaves = outlink->src->priv;
569		✗	int nb_channels = inlink->ch_layout.nb_channels;
570			int ret;
571
572		✗	showwaves->outpicref->duration = 1;
573		✗	showwaves->outpicref->pts = av_rescale_q(pts + i,
574			inlink->time_base,
575			outlink->time_base);
576
577		✗	ret = ff_filter_frame(outlink, showwaves->outpicref);
578		✗	showwaves->outpicref = NULL;
579		✗	showwaves->buf_idx = 0;
580		✗	for (int i = 0; i < nb_channels; i++)
581		✗	showwaves->buf_idy[i] = 0;
582		✗	return ret;
583			}
584
585		✗	static int push_single_pic(AVFilterLink *outlink)
586			{
587		✗	AVFilterContext *ctx = outlink->src;
588		✗	AVFilterLink *inlink = ctx->inputs[0];
589		✗	ShowWavesContext *showwaves = ctx->priv;
590		✗	int64_t n = 0, column_max_samples = showwaves->total_samples / outlink->w;
591		✗	int64_t remaining_samples = showwaves->total_samples - (column_max_samples * outlink->w);
592		✗	int64_t last_column_samples = column_max_samples + remaining_samples;
593		✗	AVFrame *out = showwaves->outpicref;
594			struct frame_node *node;
595		✗	const int nb_channels = inlink->ch_layout.nb_channels;
596		✗	const int ch_height = showwaves->split_channels ? outlink->h / nb_channels : outlink->h;
597		✗	const int linesize = out->linesize[0];
598		✗	const int pixstep = showwaves->pixstep;
599		✗	int col = 0;
600		✗	int64_t *sum = showwaves->sum;
601
602		✗	if (column_max_samples == 0) {
603		✗	av_log(ctx, AV_LOG_ERROR, "Too few samples\n");
604		✗	return AVERROR(EINVAL);
605			}
606
607		✗	av_log(ctx, AV_LOG_DEBUG, "Create frame averaging %"PRId64" samples per column\n", column_max_samples);
608
609		✗	memset(sum, 0, nb_channels * sizeof(*sum));
610
611		✗	for (node = showwaves->audio_frames; node; node = node->next) {
612			int i;
613		✗	const AVFrame *frame = node->frame;
614		✗	const int16_t *p = (const int16_t *)frame->data[0];
615
616		✗	for (i = 0; i < frame->nb_samples; i++) {
617		✗	int64_t max_samples = col == outlink->w - 1 ? last_column_samples: column_max_samples;
618			int ch;
619
620		✗	switch (showwaves->filter_mode) {
621		✗	case FILTER_AVERAGE:
622		✗	for (ch = 0; ch < nb_channels; ch++)
623		✗	sum[ch] += abs(p[ch + i*nb_channels]);
624		✗	break;
625		✗	case FILTER_PEAK:
626		✗	for (ch = 0; ch < nb_channels; ch++)
627		✗	sum[ch] = FFMAX(sum[ch], abs(p[ch + i*nb_channels]));
628		✗	break;
629			}
630
631		✗	n++;
632		✗	if (n == max_samples) {
633		✗	for (ch = 0; ch < nb_channels; ch++) {
634		✗	int16_t sample = sum[ch] / (showwaves->filter_mode == FILTER_AVERAGE ? max_samples : 1);
635		✗	uint8_t *buf = out->data[0] + col * pixstep;
636			int h;
637
638		✗	if (showwaves->split_channels)
639		✗	buf += ch*ch_height*linesize;
640		✗	av_assert0(col < outlink->w);
641		✗	h = showwaves->get_h(sample, ch_height);
642		✗	showwaves->draw_sample(buf, ch_height, linesize, &showwaves->buf_idy[ch], &showwaves->fg[ch * 4], h);
643		✗	sum[ch] = 0;
644			}
645		✗	col++;
646		✗	n = 0;
647			}
648			}
649			}
650
651		✗	return push_frame(outlink, 0, 0);
652			}
653
654
655		✗	static int request_frame(AVFilterLink *outlink)
656			{
657		✗	ShowWavesContext *showwaves = outlink->src->priv;
658		✗	AVFilterLink *inlink = outlink->src->inputs[0];
659			int ret;
660
661		✗	ret = ff_request_frame(inlink);
662		✗	if (ret == AVERROR_EOF && showwaves->outpicref) {
663		✗	push_single_pic(outlink);
664			}
665
666		✗	return ret;
667			}
668
669		✗	static int alloc_out_frame(ShowWavesContext *showwaves,
670			AVFilterLink *outlink)
671			{
672		✗	if (!showwaves->outpicref) {
673		✗	AVFrame *out = showwaves->outpicref =
674		✗	ff_get_video_buffer(outlink, outlink->w, outlink->h);
675		✗	if (!out)
676		✗	return AVERROR(ENOMEM);
677		✗	out->width = outlink->w;
678		✗	out->height = outlink->h;
679		✗	for (int j = 0; j < outlink->h; j++)
680		✗	memset(out->data[0] + j*out->linesize[0], 0, outlink->w * showwaves->pixstep);
681			}
682		✗	return 0;
683			}
684
685		✗	static av_cold int init(AVFilterContext *ctx)
686			{
687		✗	ShowWavesContext *showwaves = ctx->priv;
688
689		✗	if (!strcmp(ctx->filter->name, "showwavespic")) {
690		✗	showwaves->single_pic = 1;
691		✗	showwaves->mode = MODE_CENTERED_LINE;
692			}
693
694		✗	return 0;
695			}
696
697			#if CONFIG_SHOWWAVES_FILTER
698
699		✗	static int showwaves_filter_frame(AVFilterLink *inlink, AVFrame *insamples)
700			{
701		✗	AVFilterContext *ctx = inlink->dst;
702		✗	AVFilterLink *outlink = ctx->outputs[0];
703		✗	ShowWavesContext *showwaves = ctx->priv;
704		✗	const int nb_samples = insamples->nb_samples;
705		✗	AVFrame *outpicref = showwaves->outpicref;
706		✗	const int16_t *p = (const int16_t *)insamples->data[0];
707		✗	int16_t *history = showwaves->history;
708		✗	const int nb_channels = inlink->ch_layout.nb_channels;
709		✗	int i, j, ret = 0, linesize;
710		✗	const int pixstep = showwaves->pixstep;
711		✗	const int ch_height = showwaves->split_channels ? outlink->h / nb_channels : outlink->h;
712		✗	const int history_nb_samples = showwaves->history_nb_samples;
713		✗	const int split_channels = showwaves->split_channels;
714		✗	const AVRational i_n = av_inv_q(showwaves->n);
715		✗	const AVRational u_q = av_make_q(1, 1);
716		✗	const AVRational z_q = av_make_q(0, 1);
717		✗	int16_t *buf_idy = showwaves->buf_idy;
718		✗	int idx = showwaves->history_index;
719		✗	int buf_idx = showwaves->buf_idx;
720		✗	const uint8_t *fg = showwaves->fg;
721		✗	const int w = showwaves->w;
722			uint8_t *dst;
723
724		✗	for (int n = 0; n < nb_samples * nb_channels; n++) {
725		✗	history[idx++] = p[n];
726		✗	if (idx >= history_nb_samples)
727		✗	idx = 0;
728			}
729		✗	showwaves->history_index = idx;
730
731		✗	ret = alloc_out_frame(showwaves, outlink);
732		✗	if (ret < 0)
733		✗	goto end;
734		✗	outpicref = showwaves->outpicref;
735		✗	linesize = outpicref->linesize[0];
736
737			/* draw data in the buffer */
738		✗	dst = outpicref->data[0];
739		✗	for (i = 0; i < history_nb_samples; i++) {
740		✗	for (j = 0; j < nb_channels; j++) {
741		✗	uint8_t *buf = dst + buf_idx * pixstep;
742			int h;
743
744		✗	if (split_channels)
745		✗	buf += j*ch_height*linesize;
746		✗	h = showwaves->get_h(history[idx++], ch_height);
747		✗	if (idx >= history_nb_samples)
748		✗	idx = 0;
749		✗	showwaves->draw_sample(buf, ch_height, linesize,
750		✗	&buf_idy[j], &fg[j * 4], h);
751			}
752
753		✗	showwaves->c = av_add_q(showwaves->c, i_n);
754		✗	if (av_cmp_q(showwaves->c, u_q) >= 0) {
755		✗	showwaves->c = z_q;
756		✗	buf_idx++;
757			}
758		✗	if (buf_idx == w)
759		✗	break;
760			}
761
762		✗	showwaves->buf_idx = buf_idx;
763
764		✗	if ((ret = push_frame(outlink, history_nb_samples - i - 1, insamples->pts)) < 0)
765		✗	goto end;
766		✗	outpicref = showwaves->outpicref;
767		✗	end:
768		✗	av_frame_free(&insamples);
769		✗	return ret;
770			}
771
772		✗	static int activate(AVFilterContext *ctx)
773			{
774		✗	AVFilterLink *inlink = ctx->inputs[0];
775		✗	AVFilterLink *outlink = ctx->outputs[0];
776		✗	ShowWavesContext *showwaves = ctx->priv;
777			AVRational q;
778			AVFrame *in;
779			int nb_samples;
780			int ret;
781
782		✗	FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
783
784		✗	q = av_add_q(showwaves->q, av_mul_q(av_make_q(outlink->w, 1), showwaves->n));
785		✗	nb_samples = (q.num + (q.den / 2)) / q.den;
786		✗	ret = ff_inlink_consume_samples(inlink, nb_samples, nb_samples, &in);
787		✗	if (ret < 0)
788		✗	return ret;
789		✗	if (ret > 0) {
790		✗	showwaves->q = av_sub_q(q, av_make_q(nb_samples, 1));
791		✗	return showwaves_filter_frame(inlink, in);
792			}
793
794		✗	FF_FILTER_FORWARD_STATUS(inlink, outlink);
795		✗	FF_FILTER_FORWARD_WANTED(outlink, inlink);
796
797		✗	return FFERROR_NOT_READY;
798			}
799
800			static const AVFilterPad showwaves_outputs[] = {
801			{
802			.name = "default",
803			.type = AVMEDIA_TYPE_VIDEO,
804			.config_props = config_output,
805			},
806			};
807
808			const AVFilter ff_avf_showwaves = {
809			.name = "showwaves",
810			.description = NULL_IF_CONFIG_SMALL("Convert input audio to a video output."),
811			.init = init,
812			.uninit = uninit,
813			.priv_size = sizeof(ShowWavesContext),
814			FILTER_INPUTS(ff_audio_default_filterpad),
815			.activate = activate,
816			FILTER_OUTPUTS(showwaves_outputs),
817			FILTER_QUERY_FUNC(query_formats),
818			.priv_class = &showwaves_class,
819			};
820
821			#endif // CONFIG_SHOWWAVES_FILTER
822
823			#if CONFIG_SHOWWAVESPIC_FILTER
824
825			#define OFFSET(x) offsetof(ShowWavesContext, x)
826			#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
827
828			static const AVOption showwavespic_options[] = {
829			{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
830			{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
831			{ "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
832			{ "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
833			{ "scale", "set amplitude scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, SCALE_NB-1, FLAGS, .unit="scale" },
834			{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LIN}, .flags=FLAGS, .unit="scale"},
835			{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_LOG}, .flags=FLAGS, .unit="scale"},
836			{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_SQRT}, .flags=FLAGS, .unit="scale"},
837			{ "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=SCALE_CBRT}, .flags=FLAGS, .unit="scale"},
838			{ "draw", "set draw mode", OFFSET(draw_mode), AV_OPT_TYPE_INT, {.i64 = DRAW_SCALE}, 0, DRAW_NB-1, FLAGS, .unit="draw" },
839			{ "scale", "scale pixel values for each drawn sample", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_SCALE}, .flags=FLAGS, .unit="draw"},
840			{ "full", "draw every pixel for sample directly", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_FULL}, .flags=FLAGS, .unit="draw"},
841			{ "filter", "set filter mode", OFFSET(filter_mode), AV_OPT_TYPE_INT, {.i64 = FILTER_AVERAGE}, 0, FILTER_NB-1, FLAGS, .unit="filter" },
842			{ "average", "use average samples", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_AVERAGE}, .flags=FLAGS, .unit="filter"},
843			{ "peak", "use peak samples", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_PEAK}, .flags=FLAGS, .unit="filter"},
844			{ NULL }
845			};
846
847			AVFILTER_DEFINE_CLASS(showwavespic);
848
849		✗	static int showwavespic_config_input(AVFilterLink *inlink)
850			{
851		✗	AVFilterContext *ctx = inlink->dst;
852		✗	ShowWavesContext *showwaves = ctx->priv;
853
854		✗	if (showwaves->single_pic) {
855		✗	showwaves->sum = av_calloc(inlink->ch_layout.nb_channels, sizeof(*showwaves->sum));
856		✗	if (!showwaves->sum)
857		✗	return AVERROR(ENOMEM);
858			}
859
860		✗	return 0;
861			}
862
863		✗	static int showwavespic_filter_frame(AVFilterLink *inlink, AVFrame *insamples)
864			{
865		✗	AVFilterContext *ctx = inlink->dst;
866		✗	AVFilterLink *outlink = ctx->outputs[0];
867		✗	ShowWavesContext *showwaves = ctx->priv;
868		✗	int ret = 0;
869
870		✗	if (showwaves->single_pic) {
871			struct frame_node *f;
872
873		✗	ret = alloc_out_frame(showwaves, outlink);
874		✗	if (ret < 0)
875		✗	goto end;
876
877			/* queue the audio frame */
878		✗	f = av_malloc(sizeof(*f));
879		✗	if (!f) {
880		✗	ret = AVERROR(ENOMEM);
881		✗	goto end;
882			}
883		✗	f->frame = insamples;
884		✗	f->next = NULL;
885		✗	if (!showwaves->last_frame) {
886		✗	showwaves->audio_frames =
887		✗	showwaves->last_frame = f;
888			} else {
889		✗	showwaves->last_frame->next = f;
890		✗	showwaves->last_frame = f;
891			}
892		✗	showwaves->total_samples += insamples->nb_samples;
893
894		✗	return 0;
895			}
896
897		✗	end:
898		✗	av_frame_free(&insamples);
899		✗	return ret;
900			}
901
902			static const AVFilterPad showwavespic_inputs[] = {
903			{
904			.name = "default",
905			.type = AVMEDIA_TYPE_AUDIO,
906			.config_props = showwavespic_config_input,
907			.filter_frame = showwavespic_filter_frame,
908			},
909			};
910
911			static const AVFilterPad showwavespic_outputs[] = {
912			{
913			.name = "default",
914			.type = AVMEDIA_TYPE_VIDEO,
915			.config_props = config_output,
916			.request_frame = request_frame,
917			},
918			};
919
920			const AVFilter ff_avf_showwavespic = {
921			.name = "showwavespic",
922			.description = NULL_IF_CONFIG_SMALL("Convert input audio to a video output single picture."),
923			.init = init,
924			.uninit = uninit,
925			.priv_size = sizeof(ShowWavesContext),
926			FILTER_INPUTS(showwavespic_inputs),
927			FILTER_OUTPUTS(showwavespic_outputs),
928			FILTER_QUERY_FUNC(query_formats),
929			.priv_class = &showwavespic_class,
930			};
931
932			#endif // CONFIG_SHOWWAVESPIC_FILTER
933