ref: 6245b5282b6a39b54429dcbcc48b00d5d8c32c24
dir: /src/io/sink_flac.c/
/*
Copyright (C) 2018 Paul Brossier <piem@aubio.org>
This file is part of aubio.
aubio is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
aubio is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with aubio. If not, see <http://www.gnu.org/licenses/>.
*/
/*
This file is largely inspired by `examples/c/encode/file/main.c` in the
flac source package (versions 1.3.2 and later) available online at
https://xiph.org/flac/
*/
#include "aubio_priv.h"
#ifdef HAVE_FLAC
#include "fmat.h"
#include "io/ioutils.h"
#include <FLAC/metadata.h>
#include <FLAC/stream_encoder.h>
#define MAX_WRITE_SIZE 4096
// swap host to little endian
#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
#define HTOLES(x) SWAPS(x)
#elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
#define HTOLES(x) x
#else
#ifdef HAVE_WIN_HACKS
#define HTOLES(x) x
#else
#define HTOLES(x) SWAPS(htons(x))
#endif
#endif
// convert to short, taking care of endianness
#define FLOAT_TO_SHORT(x) (HTOLES((FLAC__int32)(x * 32768)))
struct _aubio_sink_flac_t {
uint_t samplerate;
uint_t channels;
char_t *path;
FILE *fid; // file id
FLAC__StreamEncoder* encoder;
FLAC__int32 *buffer;
FLAC__StreamMetadata **metadata;
};
typedef struct _aubio_sink_flac_t aubio_sink_flac_t;
uint_t aubio_sink_flac_preset_channels(aubio_sink_flac_t *s,
uint_t channels);
uint_t aubio_sink_flac_preset_samplerate(aubio_sink_flac_t *s,
uint_t samplerate);
uint_t aubio_sink_flac_open(aubio_sink_flac_t *s);
uint_t aubio_sink_flac_close (aubio_sink_flac_t *s);
void del_aubio_sink_flac (aubio_sink_flac_t *s);
#if 0
static void aubio_sink_flac_callback(const FLAC__StreamEncoder* encoder,
FLAC__uint64 bytes_written, FLAC__uint64 samples_written,
unsigned frames_writtten, unsigned total_frames_estimate,
void *client_data);
#endif
aubio_sink_flac_t * new_aubio_sink_flac (const char_t *uri,
uint_t samplerate)
{
aubio_sink_flac_t * s = AUBIO_NEW(aubio_sink_flac_t);
if (!uri) {
AUBIO_ERROR("sink_flac: Aborted opening null path\n");
goto failure;
}
s->path = AUBIO_ARRAY(char_t, strnlen(uri, PATH_MAX) + 1);
strncpy(s->path, uri, strnlen(uri, PATH_MAX) + 1);
s->path[strnlen(uri, PATH_MAX)] = '\0';
s->channels = 0;
s->samplerate = 0;
if ((sint_t)samplerate == 0)
return s;
aubio_sink_flac_preset_samplerate(s, samplerate);
s->channels = 1;
if (aubio_sink_flac_open(s) != AUBIO_OK)
goto failure;
return s;
failure:
del_aubio_sink_flac(s);
return NULL;
}
void del_aubio_sink_flac (aubio_sink_flac_t *s)
{
if (s->fid)
aubio_sink_flac_close(s);
if (s->buffer)
AUBIO_FREE(s->buffer);
if (s->path)
AUBIO_FREE(s->path);
AUBIO_FREE(s);
}
uint_t aubio_sink_flac_open(aubio_sink_flac_t *s)
{
uint_t ret = AUBIO_FAIL;
FLAC__bool ok = true;
FLAC__StreamEncoderInitStatus init_status;
const unsigned comp_level = 5;
const unsigned bps = 16;
if (s->samplerate == 0 || s->channels == 0) return AUBIO_FAIL;
s->buffer = AUBIO_ARRAY(FLAC__int32, s->channels * MAX_WRITE_SIZE);
if (!s->buffer) {
AUBIO_ERR("sink_flac: failed allocating buffer for %s\n", s->path);
return AUBIO_FAIL;
}
s->fid = fopen((const char *)s->path, "wb");
if (!s->fid) {
AUBIO_STRERR("sink_flac: Failed opening %s (%s)\n", s->path, errorstr);
return AUBIO_FAIL;
}
if((s->encoder = FLAC__stream_encoder_new()) == NULL) {
AUBIO_ERR("sink_flac: failed allocating encoder for %s\n", s->path);
goto failure;
}
ok &= FLAC__stream_encoder_set_verify(s->encoder, true);
ok &= FLAC__stream_encoder_set_compression_level(s->encoder, comp_level);
ok &= FLAC__stream_encoder_set_channels(s->encoder, s->channels);
ok &= FLAC__stream_encoder_set_bits_per_sample(s->encoder, bps);
ok &= FLAC__stream_encoder_set_sample_rate(s->encoder, s->samplerate);
// the total number of samples can not be estimated (streaming)
// it will be set by the encoder in FLAC__stream_encoder_finish
//ok &= FLAC__stream_encoder_set_total_samples_estimate(s->encoder, 0);
if (!ok) {
AUBIO_ERR("sink_flac: failed setting metadata for %s\n", s->path);
goto failure;
}
s->metadata = AUBIO_ARRAY(FLAC__StreamMetadata*, 2);
if (!s->metadata) {
AUBIO_ERR("sink_flac: failed allocating memory for %s\n", s->path);
goto failure;
}
s->metadata[0] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
if (!s->metadata[0]) {
AUBIO_ERR("sink_flac: failed allocating vorbis comment %s\n", s->path);
goto failure;
}
s->metadata[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING);
if (!s->metadata[1]) {
AUBIO_ERR("sink_flac: failed allocating vorbis comment %s\n", s->path);
goto failure;
}
FLAC__StreamMetadata_VorbisComment_Entry entry;
ok = FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry,
"encoder", "aubio");
ok &= FLAC__metadata_object_vorbiscomment_append_comment(s->metadata[0],
entry, false);
if (!ok) {
AUBIO_ERR("sink_flac: failed setting metadata for %s\n", s->path);
goto failure;
}
// padding length
s->metadata[1]->length = 1234;
if (!FLAC__stream_encoder_set_metadata(s->encoder, s->metadata, 2)) {
AUBIO_ERR("sink_flac: failed setting metadata for %s\n", s->path);
goto failure;
}
// initialize encoder
init_status = FLAC__stream_encoder_init_file(s->encoder, s->path,
NULL, NULL);
//aubio_sink_flac_callback, s);
if (init_status == FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE) {
AUBIO_ERR("sink_flac: failed initilizing encoder for %s"
" (invalid samplerate %d)\n", s->path, s->samplerate);
goto failure;
} else if (init_status ==
FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS) {
AUBIO_ERR("sink_flac: failed initilizing encoder for %s"
" (invalid number of channel %d)\n", s->path, s->channels);
goto failure;
} else if (init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
AUBIO_ERR("sink_flac: failed initilizing encoder for %s (%d)\n",
s->path, (int)init_status);
goto failure;
}
// mark success
ret = AUBIO_OK;
failure:
return ret;
}
uint_t aubio_sink_flac_preset_samplerate(aubio_sink_flac_t *s,
uint_t samplerate)
{
if (aubio_io_validate_samplerate("sink_flac", s->path, samplerate))
return AUBIO_FAIL;
s->samplerate = samplerate;
if (s->samplerate != 0 && s->channels != 0)
return aubio_sink_flac_open(s);
return AUBIO_OK;
}
uint_t aubio_sink_flac_preset_channels(aubio_sink_flac_t *s,
uint_t channels)
{
if (aubio_io_validate_channels("sink_flac", s->path, channels)) {
return AUBIO_FAIL;
}
s->channels = channels;
// automatically open when both samplerate and channels have been set
if (s->samplerate != 0 && s->channels != 0) {
return aubio_sink_flac_open(s);
}
return AUBIO_OK;
}
uint_t aubio_sink_flac_get_samplerate(const aubio_sink_flac_t *s)
{
return s->samplerate;
}
uint_t aubio_sink_flac_get_channels(const aubio_sink_flac_t *s)
{
return s->channels;
}
static void aubio_sink_write_frames(aubio_sink_flac_t *s, uint_t length)
{
// send to encoder
if (!FLAC__stream_encoder_process_interleaved(s->encoder,
(const FLAC__int32*)s->buffer, length)) {
FLAC__StreamEncoderState state =
FLAC__stream_encoder_get_state(s->encoder);
AUBIO_WRN("sink_flac: error writing to %s (%s)\n",
s->path, FLAC__StreamEncoderStateString[state]);
}
}
void aubio_sink_flac_do(aubio_sink_flac_t *s, fvec_t *write_data,
uint_t write)
{
uint_t c, v;
uint_t length = aubio_sink_validate_input_length("sink_flac", s->path,
MAX_WRITE_SIZE, write_data->length, write);
// fill buffer
if (!write) {
return;
} else {
for (c = 0; c < s->channels; c++) {
for (v = 0; v < length; v++) {
s->buffer[v * s->channels + c] = FLOAT_TO_SHORT(write_data->data[v]);
}
}
}
// send to encoder
aubio_sink_write_frames(s, length);
}
void aubio_sink_flac_do_multi(aubio_sink_flac_t *s, fmat_t *write_data,
uint_t write)
{
uint_t c, v;
uint_t channels = aubio_sink_validate_input_channels("sink_flac", s->path,
s->channels, write_data->height);
uint_t length = aubio_sink_validate_input_length("sink_flac", s->path,
MAX_WRITE_SIZE, write_data->length, write);
// fill buffer
if (!write) {
return;
} else {
for (c = 0; c < channels; c++) {
for (v = 0; v < length; v++) {
s->buffer[v * s->channels + c] = FLOAT_TO_SHORT(write_data->data[c][v]);
}
}
}
// send to encoder
aubio_sink_write_frames(s, length);
}
uint_t aubio_sink_flac_close (aubio_sink_flac_t *s)
{
uint_t ret = AUBIO_OK;
if (!s->fid) return AUBIO_FAIL;
if (s->encoder) {
// mark the end of stream
if (!FLAC__stream_encoder_finish(s->encoder)) {
FLAC__StreamEncoderState state =
FLAC__stream_encoder_get_state(s->encoder);
AUBIO_ERR("sink_flac: Error closing encoder for %s (%s)\n",
s->path, FLAC__StreamEncoderStateString[state]);
ret &= AUBIO_FAIL;
}
FLAC__stream_encoder_delete(s->encoder);
}
if (s->metadata) {
// clean up metadata after stream finished
if (s->metadata[0])
FLAC__metadata_object_delete(s->metadata[0]);
if (s->metadata[1])
FLAC__metadata_object_delete(s->metadata[1]);
AUBIO_FREE(s->metadata);
}
if (s->fid && fclose(s->fid)) {
AUBIO_STRERR("sink_flac: Error closing file %s (%s)\n", s->path, errorstr);
ret &= AUBIO_FAIL;
}
s->fid = NULL;
return ret;
}
#if 0
static void aubio_sink_flac_callback(const FLAC__StreamEncoder* encoder UNUSED,
FLAC__uint64 bytes_written, FLAC__uint64 samples_written,
unsigned frames_written, unsigned total_frames_estimate,
void *client_data UNUSED)
{
AUBIO_WRN("sink_flac: %d bytes_written, %d samples_written,"
" %d/%d frames writen\n",
bytes_written, samples_written, frames_written, total_frames_estimate);
}
#endif
#endif /* HAVE_FLAC */