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/* ------------------------------------------------------------------
* Copyright (C) 2011 Martin Storsjo
*
* 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.
* -------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdint.h>
#if defined(_MSC_VER)
#include <getopt.h>
#else
#include <unistd.h>
#endif
#include <stdlib.h>
#include "libAACenc/include/aacenc_lib.h"
#include "wavreader.h"
void usage(const char* name) {
fprintf(stderr, "%s [-r bitrate] [-t aot] [-a afterburner] [-s sbr] [-v vbr] in.wav out.aac\n", name);
fprintf(stderr, "Supported AOTs:\n");
fprintf(stderr, "\t2\tAAC-LC\n");
fprintf(stderr, "\t5\tHE-AAC\n");
fprintf(stderr, "\t29\tHE-AAC v2\n");
fprintf(stderr, "\t23\tAAC-LD\n");
fprintf(stderr, "\t39\tAAC-ELD\n");
}
int main(int argc, char *argv[]) {
int bitrate = 64000;
int ch;
const char *infile, *outfile;
FILE *out;
void *wav;
int format, sample_rate, channels, bits_per_sample;
int input_size;
uint8_t* input_buf;
int16_t* convert_buf;
int aot = 2;
int afterburner = 1;
int eld_sbr = 0;
int vbr = 0;
HANDLE_AACENCODER handle;
CHANNEL_MODE mode;
AACENC_InfoStruct info = { 0 };
while ((ch = getopt(argc, argv, "r:t:a:s:v:")) != -1) {
switch (ch) {
case 'r':
bitrate = atoi(optarg);
break;
case 't':
aot = atoi(optarg);
break;
case 'a':
afterburner = atoi(optarg);
break;
case 's':
eld_sbr = atoi(optarg);
break;
case 'v':
vbr = atoi(optarg);
break;
case '?':
default:
usage(argv[0]);
return 1;
}
}
if (argc - optind < 2) {
usage(argv[0]);
return 1;
}
infile = argv[optind];
outfile = argv[optind + 1];
wav = wav_read_open(infile);
if (!wav) {
fprintf(stderr, "Unable to open wav file %s\n", infile);
return 1;
}
if (!wav_get_header(wav, &format, &channels, &sample_rate, &bits_per_sample, NULL)) {
fprintf(stderr, "Bad wav file %s\n", infile);
return 1;
}
if (format != 1) {
fprintf(stderr, "Unsupported WAV format %d\n", format);
return 1;
}
if (bits_per_sample != 16) {
fprintf(stderr, "Unsupported WAV sample depth %d\n", bits_per_sample);
return 1;
}
switch (channels) {
case 1: mode = MODE_1; break;
case 2: mode = MODE_2; break;
case 3: mode = MODE_1_2; break;
case 4: mode = MODE_1_2_1; break;
case 5: mode = MODE_1_2_2; break;
case 6: mode = MODE_1_2_2_1; break;
default:
fprintf(stderr, "Unsupported WAV channels %d\n", channels);
return 1;
}
if (aacEncOpen(&handle, 0, channels) != AACENC_OK) {
fprintf(stderr, "Unable to open encoder\n");
return 1;
}
if (aacEncoder_SetParam(handle, AACENC_AOT, aot) != AACENC_OK) {
fprintf(stderr, "Unable to set the AOT\n");
return 1;
}
if (aot == 39 && eld_sbr) {
if (aacEncoder_SetParam(handle, AACENC_SBR_MODE, 1) != AACENC_OK) {
fprintf(stderr, "Unable to set SBR mode for ELD\n");
return 1;
}
}
if (aacEncoder_SetParam(handle, AACENC_SAMPLERATE, sample_rate) != AACENC_OK) {
fprintf(stderr, "Unable to set the sample rate\n");
return 1;
}
if (aacEncoder_SetParam(handle, AACENC_CHANNELMODE, mode) != AACENC_OK) {
fprintf(stderr, "Unable to set the channel mode\n");
return 1;
}
if (aacEncoder_SetParam(handle, AACENC_CHANNELORDER, 1) != AACENC_OK) {
fprintf(stderr, "Unable to set the wav channel order\n");
return 1;
}
if (vbr) {
if (aacEncoder_SetParam(handle, AACENC_BITRATEMODE, vbr) != AACENC_OK) {
fprintf(stderr, "Unable to set the VBR bitrate mode\n");
return 1;
}
} else {
if (aacEncoder_SetParam(handle, AACENC_BITRATE, bitrate) != AACENC_OK) {
fprintf(stderr, "Unable to set the bitrate\n");
return 1;
}
}
if (aacEncoder_SetParam(handle, AACENC_TRANSMUX, TT_MP4_ADTS) != AACENC_OK) {
fprintf(stderr, "Unable to set the ADTS transmux\n");
return 1;
}
if (aacEncoder_SetParam(handle, AACENC_AFTERBURNER, afterburner) != AACENC_OK) {
fprintf(stderr, "Unable to set the afterburner mode\n");
return 1;
}
if (aacEncEncode(handle, NULL, NULL, NULL, NULL) != AACENC_OK) {
fprintf(stderr, "Unable to initialize the encoder\n");
return 1;
}
if (aacEncInfo(handle, &info) != AACENC_OK) {
fprintf(stderr, "Unable to get the encoder info\n");
return 1;
}
out = fopen(outfile, "wb");
if (!out) {
perror(outfile);
return 1;
}
input_size = channels*2*info.frameLength;
input_buf = (uint8_t*) malloc(input_size);
convert_buf = (int16_t*) malloc(input_size);
while (1) {
AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 };
AACENC_InArgs in_args = { 0 };
AACENC_OutArgs out_args = { 0 };
int in_identifier = IN_AUDIO_DATA;
int in_size, in_elem_size;
int out_identifier = OUT_BITSTREAM_DATA;
int out_size, out_elem_size;
int read, i;
void *in_ptr, *out_ptr;
uint8_t outbuf[20480];
AACENC_ERROR err;
read = wav_read_data(wav, input_buf, input_size);
for (i = 0; i < read/2; i++) {
const uint8_t* in = &input_buf[2*i];
convert_buf[i] = in[0] | (in[1] << 8);
}
in_ptr = convert_buf;
in_size = read;
in_elem_size = 2;
in_args.numInSamples = read <= 0 ? -1 : read/2;
in_buf.numBufs = 1;
in_buf.bufs = &in_ptr;
in_buf.bufferIdentifiers = &in_identifier;
in_buf.bufSizes = &in_size;
in_buf.bufElSizes = &in_elem_size;
out_ptr = outbuf;
out_size = sizeof(outbuf);
out_elem_size = 1;
out_buf.numBufs = 1;
out_buf.bufs = &out_ptr;
out_buf.bufferIdentifiers = &out_identifier;
out_buf.bufSizes = &out_size;
out_buf.bufElSizes = &out_elem_size;
if ((err = aacEncEncode(handle, &in_buf, &out_buf, &in_args, &out_args)) != AACENC_OK) {
if (err == AACENC_ENCODE_EOF)
break;
fprintf(stderr, "Encoding failed\n");
return 1;
}
if (out_args.numOutBytes == 0)
continue;
fwrite(outbuf, 1, out_args.numOutBytes, out);
}
free(input_buf);
free(convert_buf);
fclose(out);
wav_read_close(wav);
aacEncClose(&handle);
return 0;
}
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