Commit bf0d9ddc authored by Martin Storsjo's avatar Martin Storsjo

Add an encoder example

parent 923f3e95
...@@ -24,3 +24,4 @@ m4/ltversion.m4 ...@@ -24,3 +24,4 @@ m4/ltversion.m4
m4/lt~obsolete.m4 m4/lt~obsolete.m4
missing missing
stamp-h1 stamp-h1
aac-enc
...@@ -32,6 +32,15 @@ lib_LTLIBRARIES = libfdk-aac.la ...@@ -32,6 +32,15 @@ lib_LTLIBRARIES = libfdk-aac.la
libfdk_aac_la_LDFLAGS = -version-info @FDK_AAC_VERSION@ -no-undefined \ libfdk_aac_la_LDFLAGS = -version-info @FDK_AAC_VERSION@ -no-undefined \
-export-symbols $(top_srcdir)/fdk-aac.sym -export-symbols $(top_srcdir)/fdk-aac.sym
if EXAMPLE
bin_PROGRAMS = aac-enc$(EXEEXT)
aac_enc_LDADD = libfdk-aac.la
aac_enc_SOURCES = aac-enc.c wavreader.c
noinst_HEADERS = wavreader.h
endif
AACDEC_DIR = $(top_srcdir)/libAACdec/src AACDEC_DIR = $(top_srcdir)/libAACdec/src
AACDEC_SRC = \ AACDEC_SRC = \
$(AACDEC_DIR)/aacdec_drc.cpp \ $(AACDEC_DIR)/aacdec_drc.cpp \
......
/* ------------------------------------------------------------------
* 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>
#include <unistd.h>
#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 AOT\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, 2) != 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);
}
if (read <= 0) {
in_args.numInSamples = -1;
} else {
in_ptr = convert_buf;
in_size = read;
in_elem_size = 2;
in_args.numInSamples = 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;
}
...@@ -7,7 +7,17 @@ AC_CONFIG_MACRO_DIR([m4]) ...@@ -7,7 +7,17 @@ AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([tar-ustar foreign]) AM_INIT_AUTOMAKE([tar-ustar foreign])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
dnl Various options for configure
AC_ARG_ENABLE([example],
[AS_HELP_STRING([--enable-example],
[enable example encoding program (default is no)])],
[example=$enableval], [example=no])
dnl Automake conditionals to set
AM_CONDITIONAL(EXAMPLE, test x$example = xyes)
dnl Checks for programs. dnl Checks for programs.
AC_PROG_CC
AC_PROG_CXX AC_PROG_CXX
LT_INIT LT_INIT
......
/* ------------------------------------------------------------------
* Copyright (C) 2009 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 "wavreader.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#define TAG(a, b, c, d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))
struct wav_reader {
FILE *wav;
uint32_t data_length;
int format;
int sample_rate;
int bits_per_sample;
int channels;
int byte_rate;
int block_align;
};
static uint32_t read_tag(struct wav_reader* wr) {
uint32_t tag = 0;
tag = (tag << 8) | fgetc(wr->wav);
tag = (tag << 8) | fgetc(wr->wav);
tag = (tag << 8) | fgetc(wr->wav);
tag = (tag << 8) | fgetc(wr->wav);
return tag;
}
static uint32_t read_int32(struct wav_reader* wr) {
uint32_t value = 0;
value |= fgetc(wr->wav) << 0;
value |= fgetc(wr->wav) << 8;
value |= fgetc(wr->wav) << 16;
value |= fgetc(wr->wav) << 24;
return value;
}
static uint16_t read_int16(struct wav_reader* wr) {
uint16_t value = 0;
value |= fgetc(wr->wav) << 0;
value |= fgetc(wr->wav) << 8;
return value;
}
void* wav_read_open(const char *filename) {
struct wav_reader* wr = (struct wav_reader*) malloc(sizeof(*wr));
long data_pos = 0;
memset(wr, 0, sizeof(*wr));
wr->wav = fopen(filename, "rb");
if (wr->wav == NULL) {
free(wr);
return NULL;
}
while (1) {
uint32_t tag, tag2, length;
tag = read_tag(wr);
if (feof(wr->wav))
break;
length = read_int32(wr);
if (tag != TAG('R', 'I', 'F', 'F') || length < 4) {
fseek(wr->wav, length, SEEK_CUR);
continue;
}
tag2 = read_tag(wr);
length -= 4;
if (tag2 != TAG('W', 'A', 'V', 'E')) {
fseek(wr->wav, length, SEEK_CUR);
continue;
}
// RIFF chunk found, iterate through it
while (length >= 8) {
uint32_t subtag, sublength;
subtag = read_tag(wr);
if (feof(wr->wav))
break;
sublength = read_int32(wr);
length -= 8;
if (length < sublength)
break;
if (subtag == TAG('f', 'm', 't', ' ')) {
if (sublength < 16) {
// Insufficient data for 'fmt '
break;
}
wr->format = read_int16(wr);
wr->channels = read_int16(wr);
wr->sample_rate = read_int32(wr);
wr->byte_rate = read_int32(wr);
wr->block_align = read_int16(wr);
wr->bits_per_sample = read_int16(wr);
fseek(wr->wav, sublength - 16, SEEK_CUR);
} else if (subtag == TAG('d', 'a', 't', 'a')) {
data_pos = ftell(wr->wav);
wr->data_length = sublength;
fseek(wr->wav, sublength, SEEK_CUR);
} else {
fseek(wr->wav, sublength, SEEK_CUR);
}
length -= sublength;
}
if (length > 0) {
// Bad chunk?
fseek(wr->wav, length, SEEK_CUR);
}
}
fseek(wr->wav, data_pos, SEEK_SET);
return wr;
}
void wav_read_close(void* obj) {
struct wav_reader* wr = (struct wav_reader*) obj;
fclose(wr->wav);
free(wr);
}
int wav_get_header(void* obj, int* format, int* channels, int* sample_rate, int* bits_per_sample, unsigned int* data_length) {
struct wav_reader* wr = (struct wav_reader*) obj;
if (format)
*format = wr->format;
if (channels)
*channels = wr->channels;
if (sample_rate)
*sample_rate = wr->sample_rate;
if (bits_per_sample)
*bits_per_sample = wr->bits_per_sample;
if (data_length)
*data_length = wr->data_length;
return wr->format && wr->sample_rate;
}
int wav_read_data(void* obj, unsigned char* data, unsigned int length) {
struct wav_reader* wr = (struct wav_reader*) obj;
int n;
if (wr->wav == NULL)
return -1;
if (length > wr->data_length)
length = wr->data_length;
n = fread(data, 1, length, wr->wav);
wr->data_length -= length;
return n;
}
/* ------------------------------------------------------------------
* Copyright (C) 2009 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.
* -------------------------------------------------------------------
*/
#ifndef WAVREADER_H
#define WAVREADER_H
#ifdef __cplusplus
extern "C" {
#endif
void* wav_read_open(const char *filename);
void wav_read_close(void* obj);
int wav_get_header(void* obj, int* format, int* channels, int* sample_rate, int* bits_per_sample, unsigned int* data_length);
int wav_read_data(void* obj, unsigned char* data, unsigned int length);
#ifdef __cplusplus
}
#endif
#endif
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