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/*
* Copyright (C) 2013 nu774
* For conditions of distribution and use, see copyright notice in COPYING
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#if HAVE_STDINT_H
# include <stdint.h>
#endif
#if HAVE_INTTYPES_H
# include <inttypes.h>
#elif defined(_MSC_VER)
# define SCNd64 "I64d"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <locale.h>
#include <errno.h>
#include <sys/stat.h>
#include <getopt.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_SIGACTION
#include <signal.h>
#endif
#ifdef _WIN32
#include <io.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#include "compat.h"
#include "pcm_reader.h"
#include "aacenc.h"
#include "m4af.h"
#include "progress.h"
#include "version.h"
#include "metadata.h"
#define PROGNAME "fdkaac"
static volatile int g_interrupted = 0;
#if HAVE_SIGACTION
static void signal_handler(int signum)
{
g_interrupted = 1;
}
static void handle_signals(void)
{
int i, sigs[] = { SIGINT, SIGHUP, SIGTERM };
for (i = 0; i < sizeof(sigs)/sizeof(sigs[0]); ++i) {
struct sigaction sa;
memset(&sa, 0, sizeof sa);
sa.sa_handler = signal_handler;
sa.sa_flags |= SA_RESTART;
sigaction(sigs[i], &sa, 0);
}
}
#elif defined(_WIN32)
static BOOL WINAPI signal_handler(DWORD type)
{
g_interrupted = 1;
return TRUE;
}
static void handle_signals(void)
{
SetConsoleCtrlHandler(signal_handler, TRUE);
}
#else
static void handle_signals(void)
{
}
#endif
static
int read_callback(void *cookie, void *data, uint32_t size)
{
size_t rc = fread(data, 1, size, (FILE*)cookie);
return ferror((FILE*)cookie) ? -1 : (int)rc;
}
static
int write_callback(void *cookie, const void *data, uint32_t size)
{
size_t rc = fwrite(data, 1, size, (FILE*)cookie);
return ferror((FILE*)cookie) ? -1 : (int)rc;
}
static
int seek_callback(void *cookie, int64_t off, int whence)
{
return fseeko((FILE*)cookie, off, whence);
}
static
int64_t tell_callback(void *cookie)
{
return ftello((FILE*)cookie);
}
static
void usage(void)
{
printf(
PROGNAME " %s\n"
"Usage: " PROGNAME " [options] input_file\n"
"Options:\n"
" -h, --help Print this help message\n"
" -p, --profile <n> Profile (audio object type)\n"
" 2: MPEG-4 AAC LC (default)\n"
" 5: MPEG-4 HE-AAC (SBR)\n"
" 29: MPEG-4 HE-AAC v2 (SBR+PS)\n"
" 23: MPEG-4 AAC LD\n"
" 39: MPEG-4 AAC ELD\n"
" 129: MPEG-2 AAC LC\n"
" 132: MPEG-2 HE-AAC (SBR)\n"
" 156: MPEG-2 HE-AAC v2 (SBR+PS)\n"
" -b, --bitrate <n> Bitrate in bits per seconds (for CBR)\n"
" -m, --bitrate-mode <n> Bitrate configuration\n"
" 0: CBR (default)\n"
" 1-5: VBR\n"
" (VBR mode is not officially supported, and\n"
" works only on a certain combination of\n"
" parameter settings, sample rate, and\n"
" channel configuration)\n"
" -w, --bandwidth <n> Frequency bandwidth in Hz (AAC LC only)\n"
" -a, --afterburner <n> Afterburner\n"
" 0: Off\n"
" 1: On(default)\n"
" -L, --lowdelay-sbr <-1|0|1> Configure SBR activity on AAC ELD\n"
" -1: Use ELD SBR auto configurator\n"
" 0: Disable SBR on ELD (default)\n"
" 1: Enable SBR on ELD\n"
" -s, --sbr-ratio <0|1|2> Controls activation of downsampled SBR\n"
" 0: Use lib default (default)\n"
" 1: downsampled SBR (default for ELD+SBR)\n"
" 2: dual-rate SBR (default for HE-AAC)\n"
" -f, --transport-format <n> Transport format\n"
" 0: RAW (default, muxed into M4A)\n"
" 1: ADIF\n"
" 2: ADTS\n"
" 6: LATM MCP=1\n"
" 7: LATM MCP=0\n"
" 10: LOAS/LATM (LATM within LOAS)\n"
" -C, --adts-crc-check Add CRC protection on ADTS header\n"
" -h, --header-period <n> StreamMuxConfig/PCE repetition period in\n"
" transport layer\n"
"\n"
" -o <filename> Output filename\n"
" -G, --gapless-mode <n> Encoder delay signaling for gapless playback\n"
" 0: iTunSMPB (default)\n"
" 1: ISO standard (edts + sgpd)\n"
" 2: Both\n"
" --include-sbr-delay Count SBR decoder delay in encoder delay\n"
" This is not iTunes compatible, but is default\n"
" behavior of FDK library.\n"
" -I, --ignorelength Ignore length of WAV header\n"
" -S, --silent Don't print progress messages\n"
" --moov-before-mdat Place moov box before mdat box on m4a output\n"
"\n"
"Options for raw (headerless) input:\n"
" -R, --raw Treat input as raw (by default WAV is\n"
" assumed)\n"
" --raw-channels <n> Number of channels (default: 2)\n"
" --raw-rate <n> Sample rate (default: 44100)\n"
" --raw-format <spec> Sample format, default is \"S16L\".\n"
" Spec is as follows:\n"
" 1st char: S(igned)|U(nsigned)|F(loat)\n"
" 2nd part: bits per channel\n"
" Last char: L(ittle)|B(ig)\n"
" Last char can be omitted, in which case L is\n"
" assumed. Spec is case insensitive, therefore\n"
" \"u16b\" is same as \"U16B\".\n"
"\n"
"Tagging options:\n"
" --title <string>\n"
" --artist <string>\n"
" --album <string>\n"
" --genre <string>\n"
" --date <string>\n"
" --composer <string>\n"
" --grouping <string>\n"
" --comment <string>\n"
" --album-artist <string>\n"
" --track <number[/total]>\n"
" --disk <number[/total]>\n"
" --tempo <n>\n"
" --tag <fcc>:<value> Set iTunes predefined tag with four char code.\n"
" --tag-from-file <fcc>:<filename>\n"
" Same as above, but value is read from file.\n"
" --long-tag <name>:<value> Set arbitrary tag as iTunes custom metadata.\n"
" --tag-from-json <filename[?dot_notation]>\n"
" Read tags from JSON. By default, tags are\n"
" assumed to be direct children of the root\n"
" object(dictionary).\n"
" Optionally, position of the dictionary\n"
" that contains tags can be specified with\n"
" dotted notation.\n"
" Example:\n"
" --tag-from-json /path/to/json?format.tags\n"
, fdkaac_version);
}
typedef struct aacenc_param_ex_t {
AACENC_PARAMS
char *input_filename;
FILE *input_fp;
char *output_filename;
FILE *output_fp;
unsigned gapless_mode;
unsigned include_sbr_delay;
unsigned ignore_length;
int silent;
int moov_before_mdat;
int is_raw;
unsigned raw_channels;
unsigned raw_rate;
const char *raw_format;
aacenc_tag_store_t tags;
aacenc_tag_store_t source_tags;
aacenc_translate_generic_text_tag_ctx_t source_tag_ctx;
char *json_filename;
} aacenc_param_ex_t;
static
int parse_options(int argc, char **argv, aacenc_param_ex_t *params)
{
int ch;
int n;
#define OPT_INCLUDE_SBR_DELAY M4AF_FOURCC('s','d','l','y')
#define OPT_MOOV_BEFORE_MDAT M4AF_FOURCC('m','o','o','v')
#define OPT_RAW_CHANNELS M4AF_FOURCC('r','c','h','n')
#define OPT_RAW_RATE M4AF_FOURCC('r','r','a','t')
#define OPT_RAW_FORMAT M4AF_FOURCC('r','f','m','t')
#define OPT_SHORT_TAG M4AF_FOURCC('s','t','a','g')
#define OPT_SHORT_TAG_FILE M4AF_FOURCC('s','t','g','f')
#define OPT_LONG_TAG M4AF_FOURCC('l','t','a','g')
#define OPT_TAG_FROM_JSON M4AF_FOURCC('t','f','j','s')
static struct option long_options[] = {
{ "help", no_argument, 0, 'h' },
{ "profile", required_argument, 0, 'p' },
{ "bitrate", required_argument, 0, 'b' },
{ "bitrate-mode", required_argument, 0, 'm' },
{ "bandwidth", required_argument, 0, 'w' },
{ "afterburner", required_argument, 0, 'a' },
{ "lowdelay-sbr", required_argument, 0, 'L' },
{ "sbr-ratio", required_argument, 0, 's' },
{ "transport-format", required_argument, 0, 'f' },
{ "adts-crc-check", no_argument, 0, 'C' },
{ "header-period", required_argument, 0, 'P' },
{ "gapless-mode", required_argument, 0, 'G' },
{ "include-sbr-delay", no_argument, 0, OPT_INCLUDE_SBR_DELAY },
{ "ignorelength", no_argument, 0, 'I' },
{ "silent", no_argument, 0, 'S' },
{ "moov-before-mdat", no_argument, 0, OPT_MOOV_BEFORE_MDAT },
{ "raw", no_argument, 0, 'R' },
{ "raw-channels", required_argument, 0, OPT_RAW_CHANNELS },
{ "raw-rate", required_argument, 0, OPT_RAW_RATE },
{ "raw-format", required_argument, 0, OPT_RAW_FORMAT },
{ "title", required_argument, 0, M4AF_TAG_TITLE },
{ "artist", required_argument, 0, M4AF_TAG_ARTIST },
{ "album", required_argument, 0, M4AF_TAG_ALBUM },
{ "genre", required_argument, 0, M4AF_TAG_GENRE },
{ "date", required_argument, 0, M4AF_TAG_DATE },
{ "composer", required_argument, 0, M4AF_TAG_COMPOSER },
{ "grouping", required_argument, 0, M4AF_TAG_GROUPING },
{ "comment", required_argument, 0, M4AF_TAG_COMMENT },
{ "album-artist", required_argument, 0, M4AF_TAG_ALBUM_ARTIST },
{ "track", required_argument, 0, M4AF_TAG_TRACK },
{ "disk", required_argument, 0, M4AF_TAG_DISK },
{ "tempo", required_argument, 0, M4AF_TAG_TEMPO },
{ "tag", required_argument, 0, OPT_SHORT_TAG },
{ "tag-from-file", required_argument, 0, OPT_SHORT_TAG_FILE },
{ "long-tag", required_argument, 0, OPT_LONG_TAG },
{ "tag-from-json", required_argument, 0, OPT_TAG_FROM_JSON },
{ 0, 0, 0, 0 },
};
params->afterburner = 1;
aacenc_getmainargs(&argc, &argv);
while ((ch = getopt_long(argc, argv, "hp:b:m:w:a:Ls:f:CP:G:Io:SR",
long_options, 0)) != EOF) {
switch (ch) {
case 'h':
return usage(), -1;
case 'p':
if (sscanf(optarg, "%u", &n) != 1) {
fprintf(stderr, "invalid arg for profile\n");
return -1;
}
params->profile = n;
break;
case 'b':
if (sscanf(optarg, "%u", &n) != 1) {
fprintf(stderr, "invalid arg for bitrate\n");
return -1;
}
params->bitrate = n;
break;
case 'm':
if (sscanf(optarg, "%u", &n) != 1 || n > 5) {
fprintf(stderr, "invalid arg for bitrate-mode\n");
return -1;
}
params->bitrate_mode = n;
break;
case 'w':
if (sscanf(optarg, "%u", &n) != 1) {
fprintf(stderr, "invalid arg for bandwidth\n");
return -1;
}
params->bandwidth = n;
break;
case 'a':
if (sscanf(optarg, "%u", &n) != 1 || n > 1) {
fprintf(stderr, "invalid arg for afterburner\n");
return -1;
}
params->afterburner = n;
break;
case 'L':
if (sscanf(optarg, "%d", &n) != 1 || n < -1 || n > 1) {
fprintf(stderr, "invalid arg for lowdelay-sbr\n");
return -1;
}
params->lowdelay_sbr = n;
break;
case 's':
if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
fprintf(stderr, "invalid arg for sbr-ratio\n");
return -1;
}
params->sbr_ratio = n;
break;
case 'f':
if (sscanf(optarg, "%u", &n) != 1) {
fprintf(stderr, "invalid arg for transport-format\n");
return -1;
}
params->transport_format = n;
break;
case 'C':
params->adts_crc_check = 1;
break;
case 'P':
if (sscanf(optarg, "%u", &n) != 1) {
fprintf(stderr, "invalid arg for header-period\n");
return -1;
}
params->header_period = n;
break;
case 'o':
params->output_filename = optarg;
break;
case 'G':
if (sscanf(optarg, "%u", &n) != 1 || n > 2) {
fprintf(stderr, "invalid arg for gapless-mode\n");
return -1;
}
params->gapless_mode = n;
break;
case OPT_INCLUDE_SBR_DELAY:
params->include_sbr_delay = 1;
break;
case 'I':
params->ignore_length = 1;
break;
case 'S':
params->silent = 1;
break;
case OPT_MOOV_BEFORE_MDAT:
params->moov_before_mdat = 1;
break;
case 'R':
params->is_raw = 1;
break;
case OPT_RAW_CHANNELS:
if (sscanf(optarg, "%u", &n) != 1) {
fprintf(stderr, "invalid arg for raw-channels\n");
return -1;
}
params->raw_channels = n;
break;
case OPT_RAW_RATE:
if (sscanf(optarg, "%u", &n) != 1) {
fprintf(stderr, "invalid arg for raw-rate\n");
return -1;
}
params->raw_rate = n;
break;
case OPT_RAW_FORMAT:
params->raw_format = optarg;
break;
case M4AF_TAG_TITLE:
case M4AF_TAG_ARTIST:
case M4AF_TAG_ALBUM:
case M4AF_TAG_GENRE:
case M4AF_TAG_DATE:
case M4AF_TAG_COMPOSER:
case M4AF_TAG_GROUPING:
case M4AF_TAG_COMMENT:
case M4AF_TAG_ALBUM_ARTIST:
case M4AF_TAG_TRACK:
case M4AF_TAG_DISK:
case M4AF_TAG_TEMPO:
aacenc_add_tag_to_store(&params->tags, ch, 0, optarg,
strlen(optarg), 0);
break;
case OPT_SHORT_TAG:
case OPT_SHORT_TAG_FILE:
case OPT_LONG_TAG:
{
char *val;
size_t klen;
unsigned fcc = M4AF_FOURCC('-','-','-','-');
if ((val = strchr(optarg, ':')) == 0) {
fprintf(stderr, "invalid arg for tag\n");
return -1;
}
*val++ = '\0';
if (ch == OPT_SHORT_TAG || ch == OPT_SHORT_TAG_FILE) {
/*
* take care of U+00A9(COPYRIGHT SIGN).
* 1) if length of fcc is 3, we prepend '\xa9'.
* 2) U+00A9 becomes "\xc2\xa9" in UTF-8. Therefore
* we remove first '\xc2'.
*/
if (optarg[0] == '\xc2')
++optarg;
if ((klen = strlen(optarg))== 3)
fcc = 0xa9;
else if (klen != 4) {
fprintf(stderr, "invalid arg for tag\n");
return -1;
}
for (; *optarg; ++optarg)
fcc = ((fcc << 8) | (*optarg & 0xff));
}
aacenc_add_tag_to_store(&params->tags, fcc, optarg,
val, strlen(val),
ch == OPT_SHORT_TAG_FILE);
}
break;
case OPT_TAG_FROM_JSON:
params->json_filename = optarg;
break;
default:
return usage(), -1;
}
}
if (argc == optind)
return usage(), -1;
if (!params->bitrate && !params->bitrate_mode) {
fprintf(stderr, "bitrate or bitrate-mode is mandatory\n");
return -1;
}
if (params->output_filename && !strcmp(params->output_filename, "-") &&
!params->transport_format) {
fprintf(stderr, "stdout streaming is not available on M4A output\n");
return -1;
}
if (params->bitrate && params->bitrate < 10000)
params->bitrate *= 1000;
if (params->is_raw) {
if (!params->raw_channels)
params->raw_channels = 2;
if (!params->raw_rate)
params->raw_rate = 44100;
if (!params->raw_format)
params->raw_format = "S16L";
}
params->input_filename = argv[optind];
return 0;
};
static
int write_sample(FILE *ofp, m4af_ctx_t *m4af, aacenc_frame_t *frame)
{
if (!m4af) {
fwrite(frame->data, 1, frame->size, ofp);
if (ferror(ofp)) {
fprintf(stderr, "ERROR: fwrite(): %s\n", strerror(errno));
return -1;
}
} else if (m4af_write_sample(m4af, 0, frame->data, frame->size, 0) < 0) {
fprintf(stderr, "ERROR: failed to write m4a sample\n");
return -1;
}
return 0;
}
static
int encode(aacenc_param_ex_t *params, pcm_reader_t *reader,
HANDLE_AACENCODER encoder, uint32_t frame_length,
m4af_ctx_t *m4af)
{
int16_t *ibuf = 0, *ip;
aacenc_frame_t obuf[2] = {{ 0 }}, *obp;
unsigned flip = 0;
int nread = 1;
int rc = -1;
int remaining, consumed;
int frames_written = 0, encoded = 0;
aacenc_progress_t progress = { 0 };
const pcm_sample_description_t *fmt = pcm_get_format(reader);
ibuf = malloc(frame_length * fmt->bytes_per_frame);
aacenc_progress_init(&progress, pcm_get_length(reader), fmt->sample_rate);
for (;;) {
/*
* Since we delay the write, we cannot just exit loop when interrupted.
* Instead, we regard it as EOF.
*/
if (g_interrupted)
nread = 0;
if (nread > 0) {
if ((nread = pcm_read_frames(reader, ibuf, frame_length)) < 0) {
fprintf(stderr, "ERROR: read failed\n");
goto END;
}
if (!params->silent)
aacenc_progress_update(&progress, pcm_get_position(reader),
fmt->sample_rate * 2);
}
ip = ibuf;
remaining = nread;
do {
obp = &obuf[flip];
consumed = aac_encode_frame(encoder, fmt, ip, remaining, obp);
if (consumed < 0) goto END;
if (consumed == 0 && obp->size == 0) goto DONE;
if (obp->size == 0) break;
remaining -= consumed;
ip += consumed * fmt->channels_per_frame;
flip ^= 1;
/*
* As we pad 1 frame at beginning and ending by our extrapolator,
* we want to drop them.
* We delay output by 1 frame by double buffering, and discard
* second frame and final frame from the encoder.
* Since sbr_header is included in the first frame (in case of
* SBR), we cannot discard first frame. So we pick second instead.
*/
++encoded;
if (encoded == 1 || encoded == 3)
continue;
if (write_sample(params->output_fp, m4af, &obuf[flip]) < 0)
goto END;
++frames_written;
} while (remaining > 0);
/*
* When interrupted, we haven't pulled out last extrapolated frames
* from the reader. Therefore, we have to write the final outcome.
*/
if (g_interrupted) {
if (write_sample(params->output_fp, m4af, &obp[flip^1]) < 0)
goto END;
++frames_written;
}
}
DONE:
if (!params->silent)
aacenc_progress_finish(&progress, pcm_get_position(reader));
rc = frames_written;
END:
if (ibuf) free(ibuf);
if (obuf[0].data) free(obuf[0].data);
if (obuf[1].data) free(obuf[1].data);
return rc;
}
static
void put_tool_tag(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
HANDLE_AACENCODER encoder)
{
char tool_info[256];
char *p = tool_info;
LIB_INFO lib_info;
p += sprintf(p, PROGNAME " %s, ", fdkaac_version);
aacenc_get_lib_info(&lib_info);
p += sprintf(p, "libfdk-aac %s, ", lib_info.versionStr);
if (params->bitrate_mode)
sprintf(p, "VBR mode %d", params->bitrate_mode);
else
sprintf(p, "CBR %dkbps",
aacEncoder_GetParam(encoder, AACENC_BITRATE) / 1000);
m4af_add_itmf_string_tag(m4af, M4AF_TAG_TOOL, tool_info);
}
static
int finalize_m4a(m4af_ctx_t *m4af, const aacenc_param_ex_t *params,
HANDLE_AACENCODER encoder)
{
unsigned i;
aacenc_tag_entry_t *tag;
tag = params->source_tags.tag_table;
for (i = 0; i < params->source_tags.tag_count; ++i, ++tag)
aacenc_write_tag_entry(m4af, tag);
if (params->json_filename)
aacenc_write_tags_from_json(m4af, params->json_filename);
tag = params->tags.tag_table;
for (i = 0; i < params->tags.tag_count; ++i, ++tag)
aacenc_write_tag_entry(m4af, tag);
put_tool_tag(m4af, params, encoder);
if (m4af_finalize(m4af, params->moov_before_mdat) < 0) {
fprintf(stderr, "ERROR: failed to finalize m4a\n");
return -1;
}
return 0;
}
static
char *generate_output_filename(const char *filename, const char *ext)
{
char *p = 0;
size_t ext_len = strlen(ext);
if (strcmp(filename, "-") == 0) {
p = malloc(ext_len + 6);
sprintf(p, "stdin%s", ext);
} else {
const char *base = aacenc_basename(filename);
size_t ilen = strlen(base);
const char *ext_org = strrchr(base, '.');
if (ext_org) ilen = ext_org - base;
p = malloc(ilen + ext_len + 1);
sprintf(p, "%.*s%s", (int)ilen, base, ext);
}
return p;
}
static
int parse_raw_spec(const char *spec, pcm_sample_description_t *desc)
{
unsigned bits;
unsigned char c_type, c_endian = 'L';
int type;
if (sscanf(spec, "%c%u%c", &c_type, &bits, &c_endian) < 2)
return -1;
c_type = toupper(c_type);
c_endian = toupper(c_endian);
if (c_type == 'S')
type = 1;
else if (c_type == 'U')
type = 2;
else if (c_type == 'F')
type = 4;
else
return -1;
if (c_endian == 'B')
type |= 8;
else if (c_endian != 'L')
return -1;
if (c_type == 'F' && bits != 32 && bits != 64)
return -1;
if (c_type != 'F' && (bits < 8 || bits > 32))
return -1;
desc->sample_type = type;
desc->bits_per_channel = bits;
return 0;
}
static pcm_io_vtbl_t pcm_io_vtbl = {
read_callback, seek_callback, tell_callback
};
static pcm_io_vtbl_t pcm_io_vtbl_noseek = { read_callback, 0, tell_callback };
static
pcm_reader_t *open_input(aacenc_param_ex_t *params)
{
pcm_io_context_t io = { 0 };
pcm_reader_t *reader = 0;
if ((params->input_fp = aacenc_fopen(params->input_filename, "rb")) == 0) {
aacenc_fprintf(stderr, "ERROR: %s: %s\n", params->input_filename,
strerror(errno));
goto FAIL;
}
io.cookie = params->input_fp;
if (aacenc_seekable(params->input_fp))
io.vtbl = &pcm_io_vtbl;
else
io.vtbl = &pcm_io_vtbl_noseek;
if (params->is_raw) {
int bytes_per_channel;
pcm_sample_description_t desc = { 0 };
if (parse_raw_spec(params->raw_format, &desc) < 0) {
fprintf(stderr, "ERROR: invalid raw-format spec\n");
goto FAIL;
}
desc.sample_rate = params->raw_rate;
desc.channels_per_frame = params->raw_channels;
bytes_per_channel = (desc.bits_per_channel + 7) / 8;
desc.bytes_per_frame = params->raw_channels * bytes_per_channel;
if ((reader = raw_open(&io, &desc)) == 0) {
fprintf(stderr, "ERROR: failed to open raw input\n");
goto FAIL;
}
} else {
int c;
ungetc(c = getc(params->input_fp), params->input_fp);
switch (c) {
case 'R':
if ((reader = wav_open(&io, params->ignore_length)) == 0) {
fprintf(stderr, "ERROR: broken / unsupported input file\n");
goto FAIL;
}
break;
case 'c':
params->source_tag_ctx.add = aacenc_add_tag_entry_to_store;
params->source_tag_ctx.add_ctx = &params->source_tags;
if ((reader = caf_open(&io,
aacenc_translate_generic_text_tag,
&params->source_tag_ctx)) == 0) {
fprintf(stderr, "ERROR: broken / unsupported input file\n");
goto FAIL;
}
break;
default:
fprintf(stderr, "ERROR: unsupported input file\n");
goto FAIL;
}
}
reader = pcm_open_native_converter(reader);
if (reader && PCM_IS_FLOAT(pcm_get_format(reader)))
reader = limiter_open(reader);
if (reader && (reader = pcm_open_sint16_converter(reader)) != 0)
reader = extrapolater_open(reader);
return reader;
FAIL:
return 0;
}
int main(int argc, char **argv)
{
static m4af_io_callbacks_t m4af_io = {
read_callback, write_callback, seek_callback, tell_callback
};
aacenc_param_ex_t params = { 0 };
int result = 2;
char *output_filename = 0;
pcm_reader_t *reader = 0;
HANDLE_AACENCODER encoder = 0;
AACENC_InfoStruct aacinfo = { 0 };
m4af_ctx_t *m4af = 0;
const pcm_sample_description_t *sample_format;
int frame_count = 0;
int sbr_mode = 0;
unsigned scale_shift = 0;
setlocale(LC_CTYPE, "");
setbuf(stderr, 0);
if (parse_options(argc, argv, &params) < 0)
return 1;
if ((reader = open_input(&params)) == 0)
goto END;
sample_format = pcm_get_format(reader);
sbr_mode = aacenc_is_sbr_active((aacenc_param_t*)&params);
if (sbr_mode && !aacenc_is_sbr_ratio_available()) {
fprintf(stderr, "WARNING: Only dual-rate SBR is available "
"for this version\n");
params.sbr_ratio = 2;
}
scale_shift = aacenc_is_dual_rate_sbr((aacenc_param_t*)&params);
params.sbr_signaling =
(params.transport_format == TT_MP4_LOAS) ? 2 :
(params.transport_format == TT_MP4_RAW) ? 1 : 0;
if (sbr_mode && !scale_shift)
params.sbr_signaling = 2;
if (aacenc_init(&encoder, (aacenc_param_t*)&params, sample_format,
&aacinfo) < 0)
goto END;
if (!params.output_filename) {
const char *ext = params.transport_format ? ".aac" : ".m4a";
output_filename = generate_output_filename(params.input_filename, ext);
params.output_filename = output_filename;
}
if ((params.output_fp = aacenc_fopen(params.output_filename, "wb+")) == 0) {
aacenc_fprintf(stderr, "ERROR: %s: %s\n", params.output_filename,
strerror(errno));
goto END;
}
handle_signals();
if (!params.transport_format) {
uint32_t scale;
unsigned framelen = aacinfo.frameLength;
scale = sample_format->sample_rate >> scale_shift;
if ((m4af = m4af_create(M4AF_CODEC_MP4A, scale, &m4af_io,
params.output_fp)) < 0)
goto END;
m4af_set_num_channels(m4af, 0, sample_format->channels_per_frame);
m4af_set_decoder_specific_info(m4af, 0,
aacinfo.confBuf, aacinfo.confSize);
m4af_set_fixed_frame_duration(m4af, 0, framelen >> scale_shift);
m4af_set_vbr_mode(m4af, 0, params.bitrate_mode);
m4af_set_priming_mode(m4af, params.gapless_mode + 1);
m4af_begin_write(m4af);
}
if (scale_shift && (aacinfo.encoderDelay & 1)) {
/*
* Since odd delay cannot be exactly expressed in downsampled scale,
* we push one zero frame to the encoder here, to make delay even
*/
int16_t zero[8] = { 0 };
aacenc_frame_t frame = { 0 };
aac_encode_frame(encoder, sample_format, zero, 1, &frame);
free(frame.data);
}
frame_count = encode(&params, reader, encoder, aacinfo.frameLength, m4af);
if (frame_count < 0)
goto END;
if (m4af) {
uint32_t delay = aacinfo.encoderDelay;
uint32_t padding;
int64_t frames_read = pcm_get_position(reader);
if (sbr_mode && params.profile != AOT_ER_AAC_ELD &&
!params.include_sbr_delay)
delay -= 481 << scale_shift;
if (scale_shift && (delay & 1))
++delay;
padding = frame_count * aacinfo.frameLength - frames_read - delay;
m4af_set_priming(m4af, 0, delay >> scale_shift, padding >> scale_shift);
if (finalize_m4a(m4af, &params, encoder) < 0)
goto END;
}
result = 0;
END:
if (reader) pcm_teardown(&reader);
if (params.input_fp) fclose(params.input_fp);
if (m4af) m4af_teardown(&m4af);
if (params.output_fp) fclose(params.output_fp);
if (encoder) aacEncClose(&encoder);
if (output_filename) free(output_filename);
if (params.tags.tag_table)
aacenc_free_tag_store(&params.tags);
if (params.source_tags.tag_table)
aacenc_free_tag_store(&params.source_tags);
return result;
}