/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Test program for audio_utils FIFO library.
// This only tests the single-threaded aspects, not the barriers.
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <audio_utils/fifo.h>
#include <audio_utils/sndfile.h>
#ifndef min
#define min(x, y) (((x) < (y)) ? (x) : (y))
#endif
int main(int argc, char **argv)
{
size_t frameCount = 0;
size_t maxFramesPerRead = 0;
size_t maxFramesPerWrite = 0;
bool readerThrottlesWriter = true;
bool verbose = false;
int i;
for (i = 1; i < argc; i++) {
char *arg = argv[i];
if (arg[0] != '-')
break;
switch (arg[1]) {
case 'f': // FIFO frame count
frameCount = atoi(&arg[2]);
break;
case 'r': // maximum frame count per read from FIFO
maxFramesPerRead = atoi(&arg[2]);
break;
case 't': // disable throttling of writer by reader
readerThrottlesWriter = false;
break;
case 'v': // enable verbose logging
verbose = true;
break;
case 'w': // maximum frame count per write to FIFO
maxFramesPerWrite = atoi(&arg[2]);
break;
default:
fprintf(stderr, "%s: unknown option %s\n", argv[0], arg);
goto usage;
}
}
if (frameCount == 0) {
frameCount = 256;
}
if (maxFramesPerRead == 0) {
maxFramesPerRead = frameCount;
}
if (maxFramesPerWrite == 0) {
maxFramesPerWrite = frameCount;
}
if (argc - i != 2) {
usage:
fprintf(stderr, "usage: %s [-f#] [-r#] [-t] [-v] [-w#] in.wav out.wav\n", argv[0]);
return EXIT_FAILURE;
}
char *inputFile = argv[i];
char *outputFile = argv[i+1];
SF_INFO sfinfoin;
memset(&sfinfoin, 0, sizeof(sfinfoin));
SNDFILE *sfin = sf_open(inputFile, SFM_READ, &sfinfoin);
if (sfin == NULL) {
perror(inputFile);
return EXIT_FAILURE;
}
switch (sfinfoin.format & (SF_FORMAT_TYPEMASK | SF_FORMAT_SUBMASK)) {
case SF_FORMAT_WAV | SF_FORMAT_PCM_16:
case SF_FORMAT_WAV | SF_FORMAT_PCM_U8:
break;
default:
fprintf(stderr, "%s: unsupported format\n", inputFile);
sf_close(sfin);
return EXIT_FAILURE;
}
size_t frameSize = sizeof(int16_t) * sfinfoin.channels;
int16_t *inputBuffer = new int16_t[sfinfoin.frames * sfinfoin.channels];
sf_count_t actualRead = sf_readf_short(sfin, inputBuffer, sfinfoin.frames);
if (actualRead != sfinfoin.frames) {
fprintf(stderr, "%s: unexpected EOF or error\n", inputFile);
sf_close(sfin);
return EXIT_FAILURE;
}
sf_close(sfin);
int16_t *outputBuffer = new int16_t[sfinfoin.frames * sfinfoin.channels];
size_t framesWritten = 0;
size_t framesRead = 0;
int16_t *fifoBuffer = new int16_t[frameCount * sfinfoin.channels];
audio_utils_fifo fifo(frameCount, frameSize, fifoBuffer, readerThrottlesWriter);
audio_utils_fifo_writer fifoWriter(fifo);
audio_utils_fifo_reader fifoReader(fifo, readerThrottlesWriter);
int fifoWriteCount = 0, fifoReadCount = 0;
int fifoFillLevel = 0, minFillLevel = INT_MAX, maxFillLevel = INT_MIN;
for (;;) {
size_t framesToWrite = sfinfoin.frames - framesWritten;
size_t framesToRead = sfinfoin.frames - framesRead;
if (framesToWrite == 0 && (framesToRead == 0 || !readerThrottlesWriter)) {
break;
}
if (framesToWrite > maxFramesPerWrite) {
framesToWrite = maxFramesPerWrite;
}
framesToWrite = rand() % (framesToWrite + 1);
ssize_t actualWritten = fifoWriter.write(
&inputBuffer[framesWritten * sfinfoin.channels], framesToWrite);
if (verbose) {
printf("wrote %d out of %d\n", (int) actualWritten, (int) framesToWrite);
}
if (actualWritten < 0 || (size_t) actualWritten > framesToWrite) {
fprintf(stderr, "write to FIFO failed\n");
break;
}
if (actualWritten < min((int) frameCount - fifoFillLevel, (int) framesToWrite)) {
fprintf(stderr, "only wrote %d when should have written min(%d, %d)\n",
(int) actualWritten, (int) frameCount - fifoFillLevel, (int) framesToWrite);
}
framesWritten += actualWritten;
if (actualWritten > 0) {
fifoWriteCount++;
}
fifoFillLevel += actualWritten;
if (verbose) {
printf("fill level after write %d\n", fifoFillLevel);
}
if (fifoFillLevel > maxFillLevel) {
maxFillLevel = fifoFillLevel;
if (maxFillLevel > (int) frameCount) {
if (readerThrottlesWriter) {
printf("maxFillLevel=%d > frameCount=%d\n", maxFillLevel, (int) frameCount);
abort();
}
}
}
if (framesToRead > maxFramesPerRead) {
framesToRead = maxFramesPerRead;
}
framesToRead = rand() % (framesToRead + 1);
ssize_t actualRead = fifoReader.read(
&outputBuffer[framesRead * sfinfoin.channels], framesToRead);
if (verbose) {
printf("read %d out of %d\n", (int) actualRead, (int) framesToRead);
}
if (actualRead < 0 || (size_t) actualRead > framesToRead) {
switch (actualRead) {
case -EIO:
fprintf(stderr, "read from FIFO failed: corrupted indices\n");
abort();
break;
case -EOVERFLOW:
if (readerThrottlesWriter) {
fprintf(stderr, "read from FIFO failed: unexpected overflow\n");
abort();
}
printf("warning: reader lost frames\n");
actualRead = 0;
break;
default:
if (actualRead < 0) {
fprintf(stderr, "read from FIFO failed: unexpected error code %d\n",
(int) actualRead);
} else {
fprintf(stderr, "read from FIFO failed: actualRead=%d > framesToRead=%d\n",
(int) actualRead, (int) framesToRead);
}
abort();
}
}
if (actualRead < min(fifoFillLevel, (int) framesToRead)) {
//fprintf(stderr, "only read %d when should have read min(%d, %d)\n",
// (int) actualRead, fifoFillLevel, (int) framesToRead);
}
framesRead += actualRead;
if (actualRead > 0) {
fifoReadCount++;
}
fifoFillLevel -= actualRead;
if (verbose) {
printf("fill level after read %d\n", fifoFillLevel);
}
if (fifoFillLevel < minFillLevel) {
minFillLevel = fifoFillLevel;
if (minFillLevel < 0) {
printf("minFillLevel=%d < 0\n", minFillLevel);
abort();
}
}
}
delete[] inputBuffer;
inputBuffer = NULL;
delete[] fifoBuffer;
fifoBuffer = NULL;
printf("FIFO non-empty writes: %d, non-empty reads: %d\n", fifoWriteCount, fifoReadCount);
printf("fill=%d, min=%d, max=%d\n", fifoFillLevel, minFillLevel, maxFillLevel);
printf("writing output\n");
SF_INFO sfinfoout;
memset(&sfinfoout, 0, sizeof(sfinfoout));
sfinfoout.samplerate = sfinfoin.samplerate;
sfinfoout.channels = sfinfoin.channels;
sfinfoout.format = sfinfoin.format;
SNDFILE *sfout = sf_open(outputFile, SFM_WRITE, &sfinfoout);
if (sfout == NULL) {
perror(outputFile);
return EXIT_FAILURE;
}
sf_count_t actualWritten = sf_writef_short(sfout, outputBuffer, framesRead);
delete[] outputBuffer;
outputBuffer = NULL;
if (actualWritten != (sf_count_t) framesRead) {
fprintf(stderr, "%s: unexpected error\n", outputFile);
sf_close(sfout);
return EXIT_FAILURE;
}
sf_close(sfout);
printf("done\n");
return EXIT_SUCCESS;
}