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 #include "config.h"
19
20 #include <stdlib.h>
21 #include <stdio.h>
22 #include <inttypes.h>
23 #include "libavutil/mem.h"
24 #include "libavutil/audio_fifo.c"
25
26 #define MAX_CHANNELS 32
27
28
29 typedef struct TestStruct {
30 const enum AVSampleFormat format;
31 const int nb_ch;
32 void const *data_planes[MAX_CHANNELS];
33 const int nb_samples_pch;
34 } TestStruct;
35
36 static const uint8_t data_U8 [] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
37 static const int16_t data_S16[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
38 static const float data_FLT[] = {0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0};
39
40 static const TestStruct test_struct[] = {
41 {.format = AV_SAMPLE_FMT_U8 , .nb_ch = 1, .data_planes = {data_U8 , }, .nb_samples_pch = 12},
42 {.format = AV_SAMPLE_FMT_U8P , .nb_ch = 2, .data_planes = {data_U8 , data_U8 +6, }, .nb_samples_pch = 6 },
43 {.format = AV_SAMPLE_FMT_S16 , .nb_ch = 1, .data_planes = {data_S16, }, .nb_samples_pch = 12},
44 {.format = AV_SAMPLE_FMT_S16P , .nb_ch = 2, .data_planes = {data_S16, data_S16+6, }, .nb_samples_pch = 6 },
45 {.format = AV_SAMPLE_FMT_FLT , .nb_ch = 1, .data_planes = {data_FLT, }, .nb_samples_pch = 12},
46 {.format = AV_SAMPLE_FMT_FLTP , .nb_ch = 2, .data_planes = {data_FLT, data_FLT+6, }, .nb_samples_pch = 6 }
47 };
48
free_data_planes(AVAudioFifo * afifo,void ** output_data)49 static void free_data_planes(AVAudioFifo *afifo, void **output_data)
50 {
51 int i;
52 for (i = 0; i < afifo->nb_buffers; ++i){
53 av_freep(&output_data[i]);
54 }
55 av_freep(&output_data);
56 }
57
ERROR(const char * str)58 static void ERROR(const char *str)
59 {
60 fprintf(stderr, "%s\n", str);
61 exit(1);
62 }
63
print_audio_bytes(const TestStruct * test_sample,void ** data_planes,int nb_samples)64 static void print_audio_bytes(const TestStruct *test_sample, void **data_planes, int nb_samples)
65 {
66 int p, b, f;
67 int byte_offset = av_get_bytes_per_sample(test_sample->format);
68 int buffers = av_sample_fmt_is_planar(test_sample->format)
69 ? test_sample->nb_ch : 1;
70 int line_size = (buffers > 1) ? nb_samples * byte_offset
71 : nb_samples * byte_offset * test_sample->nb_ch;
72 for (p = 0; p < buffers; ++p){
73 for(b = 0; b < line_size; b+=byte_offset){
74 for (f = 0; f < byte_offset; f++){
75 int order = !HAVE_BIGENDIAN ? (byte_offset - f - 1) : f;
76 printf("%02x", *((uint8_t*)data_planes[p] + b + order));
77 }
78 putchar(' ');
79 }
80 putchar('\n');
81 }
82 }
83
read_samples_from_audio_fifo(AVAudioFifo * afifo,void *** output,int nb_samples)84 static int read_samples_from_audio_fifo(AVAudioFifo* afifo, void ***output, int nb_samples)
85 {
86 int i;
87 int samples = FFMIN(nb_samples, afifo->nb_samples);
88 int tot_elements = !av_sample_fmt_is_planar(afifo->sample_fmt)
89 ? samples : afifo->channels * samples;
90 void **data_planes = av_malloc_array(afifo->nb_buffers, sizeof(void*));
91 if (!data_planes)
92 ERROR("failed to allocate memory!");
93 if (*output)
94 free_data_planes(afifo, *output);
95 *output = data_planes;
96
97 for (i = 0; i < afifo->nb_buffers; ++i){
98 data_planes[i] = av_malloc_array(tot_elements, afifo->sample_size);
99 if (!data_planes[i])
100 ERROR("failed to allocate memory!");
101 }
102
103 return av_audio_fifo_read(afifo, *output, nb_samples);
104 }
105
write_samples_to_audio_fifo(AVAudioFifo * afifo,const TestStruct * test_sample,int nb_samples,int offset)106 static int write_samples_to_audio_fifo(AVAudioFifo* afifo, const TestStruct *test_sample,
107 int nb_samples, int offset)
108 {
109 int offset_size, i;
110 void *data_planes[MAX_CHANNELS];
111
112 if(nb_samples > test_sample->nb_samples_pch - offset){
113 return 0;
114 }
115 if(offset >= test_sample->nb_samples_pch){
116 return 0;
117 }
118 offset_size = offset * afifo->sample_size;
119
120 for (i = 0; i < afifo->nb_buffers ; ++i){
121 data_planes[i] = (uint8_t*)test_sample->data_planes[i] + offset_size;
122 }
123
124 return av_audio_fifo_write(afifo, data_planes, nb_samples);
125 }
126
test_function(const TestStruct * test_sample)127 static void test_function(const TestStruct *test_sample)
128 {
129 int ret, i;
130 void **output_data = NULL;
131 AVAudioFifo *afifo = av_audio_fifo_alloc(test_sample->format, test_sample->nb_ch,
132 test_sample->nb_samples_pch);
133 if (!afifo) {
134 ERROR("ERROR: av_audio_fifo_alloc returned NULL!");
135 }
136 ret = write_samples_to_audio_fifo(afifo, test_sample, test_sample->nb_samples_pch, 0);
137 if (ret < 0){
138 ERROR("ERROR: av_audio_fifo_write failed!");
139 }
140 printf("written: %d\n", ret);
141
142 ret = write_samples_to_audio_fifo(afifo, test_sample, test_sample->nb_samples_pch, 0);
143 if (ret < 0){
144 ERROR("ERROR: av_audio_fifo_write failed!");
145 }
146 printf("written: %d\n", ret);
147 printf("remaining samples in audio_fifo: %d\n\n", av_audio_fifo_size(afifo));
148
149 ret = read_samples_from_audio_fifo(afifo, &output_data, test_sample->nb_samples_pch);
150 if (ret < 0){
151 ERROR("ERROR: av_audio_fifo_read failed!");
152 }
153 printf("read: %d\n", ret);
154 print_audio_bytes(test_sample, output_data, ret);
155 printf("remaining samples in audio_fifo: %d\n\n", av_audio_fifo_size(afifo));
156
157 /* test av_audio_fifo_peek */
158 ret = av_audio_fifo_peek(afifo, output_data, afifo->nb_samples);
159 if (ret < 0){
160 ERROR("ERROR: av_audio_fifo_peek failed!");
161 }
162 printf("peek:\n");
163 print_audio_bytes(test_sample, output_data, ret);
164 printf("\n");
165
166 /* test av_audio_fifo_peek_at */
167 printf("peek_at:\n");
168 for (i = 0; i < afifo->nb_samples; ++i){
169 ret = av_audio_fifo_peek_at(afifo, output_data, 1, i);
170 if (ret < 0){
171 ERROR("ERROR: av_audio_fifo_peek_at failed!");
172 }
173 printf("%d:\n", i);
174 print_audio_bytes(test_sample, output_data, ret);
175 }
176 printf("\n");
177
178 /* test av_audio_fifo_drain */
179 ret = av_audio_fifo_drain(afifo, afifo->nb_samples);
180 if (ret < 0){
181 ERROR("ERROR: av_audio_fifo_drain failed!");
182 }
183 if (afifo->nb_samples){
184 ERROR("drain failed to flush all samples in audio_fifo!");
185 }
186
187 /* deallocate */
188 free_data_planes(afifo, output_data);
189 av_audio_fifo_free(afifo);
190 }
191
main(void)192 int main(void)
193 {
194 int t, tests = sizeof(test_struct)/sizeof(test_struct[0]);
195
196 for (t = 0; t < tests; ++t){
197 printf("\nTEST: %d\n\n", t+1);
198 test_function(&test_struct[t]);
199 }
200 return 0;
201 }
202