2 * Copyright (c) 2002 Fabrice Bellard
3 * Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "libavutil/avstring.h"
26 #include "libavutil/common.h"
27 #include "libavutil/lfg.h"
28 #include "libavutil/libm.h"
29 #include "libavutil/log.h"
30 #include "libavutil/mem.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/samplefmt.h"
34 #include "libavresample/avresample.h"
36 static double dbl_rand(AVLFG *lfg)
38 return 2.0 * (av_lfg_get(lfg) / (double)UINT_MAX) - 1.0;
41 #define PUT_FUNC(name, fmt, type, expr) \
42 static void put_sample_ ## name(void **data, enum AVSampleFormat sample_fmt,\
43 int channels, int sample, int ch, \
47 type **out = (type **)data; \
48 if (av_sample_fmt_is_planar(sample_fmt)) \
49 out[ch][sample] = v; \
51 out[0][sample * channels + ch] = v; \
54 PUT_FUNC(u8, AV_SAMPLE_FMT_U8, uint8_t, av_clip_uint8 ( lrint(v_dbl * (1 << 7)) + 128))
55 PUT_FUNC(s16, AV_SAMPLE_FMT_S16, int16_t, av_clip_int16 ( lrint(v_dbl * (1 << 15))))
56 PUT_FUNC(s32, AV_SAMPLE_FMT_S32, int32_t, av_clipl_int32(llrint(v_dbl * (1U << 31))))
57 PUT_FUNC(flt, AV_SAMPLE_FMT_FLT, float, v_dbl)
58 PUT_FUNC(dbl, AV_SAMPLE_FMT_DBL, double, v_dbl)
60 static void put_sample(void **data, enum AVSampleFormat sample_fmt,
61 int channels, int sample, int ch, double v_dbl)
63 switch (av_get_packed_sample_fmt(sample_fmt)) {
64 case AV_SAMPLE_FMT_U8:
65 put_sample_u8(data, sample_fmt, channels, sample, ch, v_dbl);
67 case AV_SAMPLE_FMT_S16:
68 put_sample_s16(data, sample_fmt, channels, sample, ch, v_dbl);
70 case AV_SAMPLE_FMT_S32:
71 put_sample_s32(data, sample_fmt, channels, sample, ch, v_dbl);
73 case AV_SAMPLE_FMT_FLT:
74 put_sample_flt(data, sample_fmt, channels, sample, ch, v_dbl);
76 case AV_SAMPLE_FMT_DBL:
77 put_sample_dbl(data, sample_fmt, channels, sample, ch, v_dbl);
82 static void audiogen(AVLFG *rnd, void **data, enum AVSampleFormat sample_fmt,
83 int channels, int sample_rate, int nb_samples)
87 double tabf1[AVRESAMPLE_MAX_CHANNELS];
88 double tabf2[AVRESAMPLE_MAX_CHANNELS];
89 double taba[AVRESAMPLE_MAX_CHANNELS];
91 #define PUT_SAMPLE put_sample(data, sample_fmt, channels, k, ch, v);
95 /* 1 second of single freq sine at 1000 Hz */
97 for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {
99 for (ch = 0; ch < channels; ch++)
101 a += M_PI * 1000.0 * 2.0 / sample_rate;
104 /* 1 second of varying frequency between 100 and 10000 Hz */
106 for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {
108 for (ch = 0; ch < channels; ch++)
110 f = 100.0 + (((10000.0 - 100.0) * i) / sample_rate);
111 a += M_PI * f * 2.0 / sample_rate;
114 /* 0.5 second of low amplitude white noise */
115 for (i = 0; i < sample_rate / 2 && k < nb_samples; i++, k++) {
116 v = dbl_rand(rnd) * 0.30;
117 for (ch = 0; ch < channels; ch++)
121 /* 0.5 second of high amplitude white noise */
122 for (i = 0; i < sample_rate / 2 && k < nb_samples; i++, k++) {
124 for (ch = 0; ch < channels; ch++)
128 /* 1 second of unrelated ramps for each channel */
129 for (ch = 0; ch < channels; ch++) {
131 tabf1[ch] = 100 + av_lfg_get(rnd) % 5000;
132 tabf2[ch] = 100 + av_lfg_get(rnd) % 5000;
134 for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {
135 for (ch = 0; ch < channels; ch++) {
136 v = sin(taba[ch]) * 0.30;
138 f = tabf1[ch] + (((tabf2[ch] - tabf1[ch]) * i) / sample_rate);
139 taba[ch] += M_PI * f * 2.0 / sample_rate;
143 /* 2 seconds of 500 Hz with varying volume */
146 for (i = 0; i < 2 * sample_rate && k < nb_samples; i++, k++) {
147 for (ch = 0; ch < channels; ch++) {
148 double amp = (1.0 + sin(ampa)) * 0.15;
153 a += M_PI * 500.0 * 2.0 / sample_rate;
154 ampa += M_PI * 2.0 / sample_rate;
159 /* formats, rates, and layouts are ordered for priority in testing.
160 e.g. 'avresample-test 4 2 2' will test all input/output combinations of
161 S16/FLTP/S16P/FLT, 48000/44100, and stereo/mono */
163 static const enum AVSampleFormat formats[] = {
176 static const int rates[] = {
182 static const uint64_t layouts[] = {
185 AV_CH_LAYOUT_5POINT1,
186 AV_CH_LAYOUT_7POINT1,
189 int main(int argc, char **argv)
191 AVAudioResampleContext *s;
194 uint8_t *in_buf = NULL;
195 uint8_t *out_buf = NULL;
196 unsigned int in_buf_size;
197 unsigned int out_buf_size;
198 uint8_t *in_data[AVRESAMPLE_MAX_CHANNELS] = { 0 };
199 uint8_t *out_data[AVRESAMPLE_MAX_CHANNELS] = { 0 };
202 uint64_t in_ch_layout;
204 enum AVSampleFormat in_fmt;
206 uint64_t out_ch_layout;
208 enum AVSampleFormat out_fmt;
210 int num_formats, num_rates, num_layouts;
211 int i, j, k, l, m, n;
217 if (!av_strncasecmp(argv[1], "-h", 3)) {
218 av_log(NULL, AV_LOG_INFO, "Usage: avresample-test [<num formats> "
219 "[<num sample rates> [<num channel layouts>]]]\n"
220 "Default is 2 2 2\n");
223 num_formats = strtol(argv[1], NULL, 0);
224 num_formats = av_clip(num_formats, 1, FF_ARRAY_ELEMS(formats));
227 num_rates = strtol(argv[2], NULL, 0);
228 num_rates = av_clip(num_rates, 1, FF_ARRAY_ELEMS(rates));
231 num_layouts = strtol(argv[3], NULL, 0);
232 num_layouts = av_clip(num_layouts, 1, FF_ARRAY_ELEMS(layouts));
235 av_log_set_level(AV_LOG_DEBUG);
237 av_lfg_init(&rnd, 0xC0FFEE);
239 in_buf_size = av_samples_get_buffer_size(&in_linesize, 8, 48000 * 6,
240 AV_SAMPLE_FMT_DBLP, 0);
241 out_buf_size = in_buf_size;
243 in_buf = av_malloc(in_buf_size);
246 out_buf = av_malloc(out_buf_size);
250 s = avresample_alloc_context();
252 av_log(NULL, AV_LOG_ERROR, "Error allocating AVAudioResampleContext\n");
257 for (i = 0; i < num_formats; i++) {
259 for (k = 0; k < num_layouts; k++) {
260 in_ch_layout = layouts[k];
261 in_channels = av_get_channel_layout_nb_channels(in_ch_layout);
262 for (m = 0; m < num_rates; m++) {
265 ret = av_samples_fill_arrays(in_data, &in_linesize, in_buf,
266 in_channels, in_rate * 6,
269 av_log(s, AV_LOG_ERROR, "failed in_data fill arrays\n");
272 audiogen(&rnd, (void **)in_data, in_fmt, in_channels, in_rate, in_rate * 6);
274 for (j = 0; j < num_formats; j++) {
275 out_fmt = formats[j];
276 for (l = 0; l < num_layouts; l++) {
277 out_ch_layout = layouts[l];
278 out_channels = av_get_channel_layout_nb_channels(out_ch_layout);
279 for (n = 0; n < num_rates; n++) {
282 av_log(NULL, AV_LOG_INFO, "%s to %s, %d to %d channels, %d Hz to %d Hz\n",
283 av_get_sample_fmt_name(in_fmt), av_get_sample_fmt_name(out_fmt),
284 in_channels, out_channels, in_rate, out_rate);
286 ret = av_samples_fill_arrays(out_data, &out_linesize,
287 out_buf, out_channels,
288 out_rate * 6, out_fmt, 0);
290 av_log(s, AV_LOG_ERROR, "failed out_data fill arrays\n");
294 av_opt_set_int(s, "in_channel_layout", in_ch_layout, 0);
295 av_opt_set_int(s, "in_sample_fmt", in_fmt, 0);
296 av_opt_set_int(s, "in_sample_rate", in_rate, 0);
297 av_opt_set_int(s, "out_channel_layout", out_ch_layout, 0);
298 av_opt_set_int(s, "out_sample_fmt", out_fmt, 0);
299 av_opt_set_int(s, "out_sample_rate", out_rate, 0);
301 av_opt_set_int(s, "internal_sample_fmt", AV_SAMPLE_FMT_FLTP, 0);
303 ret = avresample_open(s);
305 av_log(s, AV_LOG_ERROR, "Error opening context\n");
309 ret = avresample_convert(s, out_data, out_linesize, out_rate * 6,
310 in_data, in_linesize, in_rate * 6);
313 av_strerror(ret, errbuf, sizeof(errbuf));
314 av_log(NULL, AV_LOG_ERROR, "%s\n", errbuf);
317 av_log(NULL, AV_LOG_INFO, "Converted %d samples to %d samples\n",
319 if (avresample_get_delay(s) > 0)
320 av_log(NULL, AV_LOG_INFO, "%d delay samples not converted\n",
321 avresample_get_delay(s));
322 if (avresample_available(s) > 0)
323 av_log(NULL, AV_LOG_INFO, "%d samples available for output\n",
324 avresample_available(s));
325 av_log(NULL, AV_LOG_INFO, "\n");