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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include "libavutil/mem.h"
#include "libavutil/audio_fifo.c"
#define MAX_CHANNELS 32
typedef struct TestStruct {
const enum AVSampleFormat format;
const int nb_ch;
void const *data_planes[MAX_CHANNELS];
int nb_samples_pch;
} TestStruct;
static const uint8_t data_U8 [] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
static const int16_t data_S16[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 };
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};
static const TestStruct test_struct[] = {
{.format = AV_SAMPLE_FMT_U8 , .nb_ch = 1, .data_planes = {data_U8 , }, .nb_samples_pch = 12},
{.format = AV_SAMPLE_FMT_U8P , .nb_ch = 2, .data_planes = {data_U8 , data_U8 +6, }, .nb_samples_pch = 6 },
{.format = AV_SAMPLE_FMT_S16 , .nb_ch = 1, .data_planes = {data_S16, }, .nb_samples_pch = 12},
{.format = AV_SAMPLE_FMT_S16P , .nb_ch = 2, .data_planes = {data_S16, data_S16+6, }, .nb_samples_pch = 6 },
{.format = AV_SAMPLE_FMT_FLT , .nb_ch = 1, .data_planes = {data_FLT, }, .nb_samples_pch = 12},
{.format = AV_SAMPLE_FMT_FLTP , .nb_ch = 2, .data_planes = {data_FLT, data_FLT+6, }, .nb_samples_pch = 6 }
};
static void free_data_planes(AVAudioFifo *afifo, void **output_data)
{
int i;
for (i = 0; i < afifo->nb_buffers; ++i){
av_freep(&output_data[i]);
}
av_freep(&output_data);
}
static void ERROR(const char *str)
{
fprintf(stderr, "%s\n", str);
exit(1);
}
static void print_audio_bytes(const TestStruct *test_sample, void **data_planes, int nb_samples)
{
int p, b, f;
int byte_offset = av_get_bytes_per_sample(test_sample->format);
int buffers = av_sample_fmt_is_planar(test_sample->format)
? test_sample->nb_ch : 1;
int line_size = (buffers > 1) ? nb_samples * byte_offset
: nb_samples * byte_offset * test_sample->nb_ch;
for (p = 0; p < buffers; ++p){
for(b = 0; b < line_size; b+=byte_offset){
for (f = 0; f < byte_offset; f++){
int order = !HAVE_BIGENDIAN ? (byte_offset - f - 1) : f;
printf("%02x", *((uint8_t*)data_planes[p] + b + order));
}
putchar(' ');
}
putchar('\n');
}
}
static int read_samples_from_audio_fifo(AVAudioFifo* afifo, void ***output, int nb_samples)
{
int i;
int samples = FFMIN(nb_samples, afifo->nb_samples);
int tot_elements = !av_sample_fmt_is_planar(afifo->sample_fmt)
? samples : afifo->channels * samples;
void **data_planes = av_malloc_array(afifo->nb_buffers, sizeof(void*));
if (!data_planes)
ERROR("failed to allocate memory!");
if (*output)
free_data_planes(afifo, *output);
*output = data_planes;
for (i = 0; i < afifo->nb_buffers; ++i){
data_planes[i] = av_malloc_array(tot_elements, afifo->sample_size);
if (!data_planes[i])
ERROR("failed to allocate memory!");
}
return av_audio_fifo_read(afifo, *output, nb_samples);
}
static int write_samples_to_audio_fifo(AVAudioFifo* afifo, const TestStruct test_sample,
int nb_samples, int offset)
{
int offset_size, i;
void *data_planes[MAX_CHANNELS];
if(nb_samples > test_sample.nb_samples_pch - offset){
return 0;
}
if(offset >= test_sample.nb_samples_pch){
return 0;
}
offset_size = offset * afifo->sample_size;
for (i = 0; i < afifo->nb_buffers ; ++i){
data_planes[i] = (uint8_t*)test_sample.data_planes[i] + offset_size;
}
return av_audio_fifo_write(afifo, data_planes, nb_samples);
}
static void test_function(const TestStruct test_sample)
{
int ret, i;
void **output_data = NULL;
AVAudioFifo *afifo = av_audio_fifo_alloc(test_sample.format, test_sample.nb_ch,
test_sample.nb_samples_pch);
if (!afifo) {
ERROR("ERROR: av_audio_fifo_alloc returned NULL!");
}
ret = write_samples_to_audio_fifo(afifo, test_sample, test_sample.nb_samples_pch, 0);
if (ret < 0){
ERROR("ERROR: av_audio_fifo_write failed!");
}
printf("written: %d\n", ret);
ret = write_samples_to_audio_fifo(afifo, test_sample, test_sample.nb_samples_pch, 0);
if (ret < 0){
ERROR("ERROR: av_audio_fifo_write failed!");
}
printf("written: %d\n", ret);
printf("remaining samples in audio_fifo: %d\n\n", av_audio_fifo_size(afifo));
ret = read_samples_from_audio_fifo(afifo, &output_data, test_sample.nb_samples_pch);
if (ret < 0){
ERROR("ERROR: av_audio_fifo_read failed!");
}
printf("read: %d\n", ret);
print_audio_bytes(&test_sample, output_data, ret);
printf("remaining samples in audio_fifo: %d\n\n", av_audio_fifo_size(afifo));
/* test av_audio_fifo_peek */
ret = av_audio_fifo_peek(afifo, output_data, afifo->nb_samples);
if (ret < 0){
ERROR("ERROR: av_audio_fifo_peek failed!");
}
printf("peek:\n");
print_audio_bytes(&test_sample, output_data, ret);
printf("\n");
/* test av_audio_fifo_peek_at */
printf("peek_at:\n");
for (i = 0; i < afifo->nb_samples; ++i){
ret = av_audio_fifo_peek_at(afifo, output_data, 1, i);
if (ret < 0){
ERROR("ERROR: av_audio_fifo_peek_at failed!");
}
printf("%d:\n", i);
print_audio_bytes(&test_sample, output_data, ret);
}
printf("\n");
/* test av_audio_fifo_drain */
ret = av_audio_fifo_drain(afifo, afifo->nb_samples);
if (ret < 0){
ERROR("ERROR: av_audio_fifo_drain failed!");
}
if (afifo->nb_samples){
ERROR("drain failed to flush all samples in audio_fifo!");
}
/* deallocate */
free_data_planes(afifo, output_data);
av_audio_fifo_free(afifo);
}
int main(void)
{
int t, tests = sizeof(test_struct)/sizeof(test_struct[0]);
for (t = 0; t < tests; ++t){
printf("\nTEST: %d\n\n", t+1);
test_function(test_struct[t]);
}
return 0;
}
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