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