bool FlacAudioEncoder::set_tag_value(FLAC__StreamMetadata* metadata, const std::string& key, const std::string& value)
{
FLAC__StreamMetadata_VorbisComment_Entry entry;
return FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, key.c_str(), value.c_str()) and
FLAC__metadata_object_vorbiscomment_append_comment(metadata, entry, false);
}
static FLAC__bool append_tag_(FLAC__StreamMetadata *block, const char *format, const FLAC__byte *name, float value)
{
char buffer[256];
char *saved_locale;
FLAC__StreamMetadata_VorbisComment_Entry entry;
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__ASSERT(0 != name);
FLAC__ASSERT(0 != value);
buffer[sizeof(buffer)-1] = '\0';
/*
* We need to save the old locale and switch to "C" because the locale
* influences the formatting of %f and we want it a certain way.
*/
saved_locale = setlocale(LC_ALL, 0);
setlocale(LC_ALL, "C");
#if defined _MSC_VER || defined __MINGW32__
_snprintf(buffer, sizeof(buffer)-1, format, name, value);
#else
snprintf(buffer, sizeof(buffer)-1, format, name, value);
#endif
setlocale(LC_ALL, saved_locale);
entry.entry = (FLAC__byte *)buffer;
entry.length = strlen(buffer);
return FLAC__metadata_object_vorbiscomment_append_comment(block, entry, /*copy=*/true);
}
void AddCommentField(const std::string &field, const mpt::ustring &data)
{
if(!field.empty() && !data.empty())
{
FLAC__StreamMetadata_VorbisComment_Entry entry;
FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, field.c_str(), mpt::ToCharset(mpt::CharsetUTF8, data).c_str());
FLAC__metadata_object_vorbiscomment_append_comment(flac_metadata[0], entry, false);
}
}
int flac_write( const char* filename, const char *predicate, const char* uri )
{
if (strcmp(predicate, LL_LICENSE) != 0) {
return -LL_E_MODULE_WRITE_FAIL; /* We only know License */
}
int ret = 1;
FLAC__Metadata_SimpleIterator *iter = FLAC__metadata_simple_iterator_new();
if (FLAC__metadata_simple_iterator_init(iter,filename,false,false) && FLAC__metadata_simple_iterator_is_writable(iter)) {
FLAC__bool found_vc = false;
do {
if (FLAC__metadata_simple_iterator_get_block_type(iter) == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
FLAC__StreamMetadata *vc;
found_vc = true;
vc = FLAC__metadata_simple_iterator_get_block(iter);
if (uri) {
FLAC__StreamMetadata_VorbisComment_Entry entry;
FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "LICENSE", uri);
FLAC__metadata_object_vorbiscomment_replace_comment(vc,entry,true,false);
} else {
int i = FLAC__metadata_object_vorbiscomment_find_entry_from(vc,0,"LICENSE");
if (i != -1) {
FLAC__metadata_object_vorbiscomment_delete_comment(vc,i);
}
}
ret = FLAC__metadata_simple_iterator_set_block(iter, vc, true);
FLAC__metadata_object_delete(vc);
break;
}
} while (FLAC__metadata_simple_iterator_next(iter));
if (!found_vc && uri) {
FLAC__StreamMetadata *vc = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__StreamMetadata_VorbisComment_Entry entry;
FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "LICENSE", uri);
FLAC__metadata_object_vorbiscomment_append_comment(vc,entry,false);
ret = FLAC__metadata_simple_iterator_insert_block_after(iter,vc,true);
FLAC__metadata_object_delete(vc);
}
} else {
ret = 0;
}
FLAC__metadata_simple_iterator_delete(iter);
return ret;
}
/*
* vc_block_append_other_tag:
* @vc_block: the Vorbis comment in which to add the tag
* @tag: the name and value of the tag
*
* Append the unsupported (not shown in the UI) @tag to @vc_block.
*/
static void
vc_block_append_other_tag (FLAC__StreamMetadata *vc_block,
const gchar *tag)
{
FLAC__StreamMetadata_VorbisComment_Entry field;
field.entry = (FLAC__byte *)tag;
field.length = strlen (tag);
/* Safe to pass const data, if the last argument (copy) is true, according
* to the FLAC API reference. */
if (!FLAC__metadata_object_vorbiscomment_append_comment (vc_block, field,
true))
{
g_critical ("Invalid Vorbis comment, or memory allocation failed, when writing other FLAC tag '%s'",
tag);
}
}
FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_replace_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool all, FLAC__bool copy)
{
FLAC__ASSERT(0 != entry.entry && entry.length > 0);
if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length))
return false;
{
int i;
unsigned field_name_length;
const FLAC__byte *eq = (FLAC__byte*)memchr(entry.entry, '=', entry.length);
FLAC__ASSERT(0 != eq);
if(0 == eq)
return false; /* double protection */
field_name_length = eq-entry.entry;
if((i = vorbiscomment_find_entry_from_(object, 0, (const char *)entry.entry, field_name_length)) >= 0) {
unsigned index = (unsigned)i;
if(!FLAC__metadata_object_vorbiscomment_set_comment(object, index, entry, copy))
return false;
if(all && (index+1 < object->data.vorbis_comment.num_comments)) {
for(i = vorbiscomment_find_entry_from_(object, index+1, (const char *)entry.entry, field_name_length); i >= 0; ) {
if(!FLAC__metadata_object_vorbiscomment_delete_comment(object, (unsigned)i))
return false;
if((unsigned)i < object->data.vorbis_comment.num_comments)
i = vorbiscomment_find_entry_from_(object, (unsigned)i, (const char *)entry.entry, field_name_length);
else
i = -1;
}
}
return true;
}
else
return FLAC__metadata_object_vorbiscomment_append_comment(object, entry, copy);
}
}
/*
* vc_block_append_single_tag:
* @vc_block: the Vorbis comment in which to add the tag
* @tag_name: the name of the tag
* @value: the value of the tag
*
* Save field value in a single tag.
*/
static void
vc_block_append_single_tag (FLAC__StreamMetadata *vc_block,
const gchar *tag_name,
const gchar *value)
{
FLAC__StreamMetadata_VorbisComment_Entry field;
if (!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair (&field,
tag_name,
value))
{
g_critical ("Invalid Vorbis comment, or memory allocation failed, when creating FLAC entry from tag name '%s' and value '%s'",
tag_name, value);
return;
}
if (!FLAC__metadata_object_vorbiscomment_append_comment (vc_block, field,
false))
{
g_critical ("Invalid Vorbis comment, or memory allocation failed, when writing FLAC tag '%s' with value '%s'",
tag_name, value);
}
}
/* slight modification: no 'filename' arg, and errors are passed back in 'violation' instead of printed to stderr */
static FLAC__bool set_vc_field(FLAC__StreamMetadata *block, const Argument_VcField *field, FLAC__bool *needs_write, FLAC__bool raw, const char **violation)
{
FLAC__StreamMetadata_VorbisComment_Entry entry;
char *converted;
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__ASSERT(0 != field);
FLAC__ASSERT(0 != needs_write);
if(field->field_value_from_file) {
/* read the file into 'data' */
FILE *f = 0;
char *data = 0;
const off_t size = grabbag__file_get_filesize(field->field_value);
if(size < 0) {
*violation = "can't open file for tag value";
return false;
}
if(size >= 0x100000) { /* magic arbitrary limit, actual format limit is near 16MB */
*violation = "file for tag value is too large";
return false;
}
if(0 == (data = malloc(size+1)))
die("out of memory allocating tag value");
data[size] = '\0';
if(0 == (f = fopen(field->field_value, "rb")) || fread(data, 1, size, f) != (size_t)size) {
free(data);
if(f)
fclose(f);
*violation = "error while reading file for tag value";
return false;
}
fclose(f);
if(strlen(data) != (size_t)size) {
free(data);
*violation = "file for tag value has embedded NULs";
return false;
}
/* move 'data' into 'converted', converting to UTF-8 if necessary */
if(raw) {
converted = data;
}
else if(utf8_encode(data, &converted) >= 0) {
free(data);
}
else {
free(data);
*violation = "error converting file contents to UTF-8 for tag value";
return false;
}
/* create and entry and append it */
if(!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, field->field_name, converted)) {
free(converted);
*violation = "file for tag value is not valid UTF-8";
return false;
}
free(converted);
if(!FLAC__metadata_object_vorbiscomment_append_comment(block, entry, /*copy=*/false)) {
*violation = "memory allocation failure";
return false;
}
*needs_write = true;
return true;
}
else {
FLAC__bool needs_free = false;
if(raw) {
entry.entry = (FLAC__byte *)field->field;
}
else if(utf8_encode(field->field, &converted) >= 0) {
entry.entry = (FLAC__byte *)converted;
needs_free = true;
}
else {
*violation = "error converting comment to UTF-8";
return false;
}
entry.length = strlen((const char *)entry.entry);
if(!FLAC__format_vorbiscomment_entry_is_legal(entry.entry, entry.length)) {
if(needs_free)
free(converted);
/*
* our previous parsing has already established that the field
* name is OK, so it must be the field value
*/
*violation = "tag value for is not valid UTF-8";
return false;
}
if(!FLAC__metadata_object_vorbiscomment_append_comment(block, entry, /*copy=*/true)) {
if(needs_free)
free(converted);
*violation = "memory allocation failure";
return false;
}
*needs_write = true;
if(needs_free)
free(converted);
return true;
}
}
int main(int argc, char *argv[])
{
FLAC__bool ok = true;
FLAC__StreamEncoder *encoder = 0;
FLAC__StreamEncoderInitStatus init_status;
FLAC__StreamMetadata *metadata[2];
FLAC__StreamMetadata_VorbisComment_Entry entry;
FILE *fin;
unsigned sample_rate = 0;
unsigned channels = 0;
unsigned bps = 0;
if(argc != 3) {
fprintf(stderr, "usage: %s infile.wav outfile.flac\n", argv[0]);
return 1;
}
if((fin = fopen(argv[1], "rb")) == NULL) {
fprintf(stderr, "ERROR: opening %s for output\n", argv[1]);
return 1;
}
/* read wav header and validate it */
if(
fread(buffer, 1, 44, fin) != 44 ||
memcmp(buffer, "RIFF", 4) ||
memcmp(buffer+8, "WAVEfmt \020\000\000\000\001\000\002\000", 16) ||
memcmp(buffer+32, "\004\000\020\000data", 8)
) {
fprintf(stderr, "ERROR: invalid/unsupported WAVE file, only 16bps stereo WAVE in canonical form allowed\n");
fclose(fin);
return 1;
}
sample_rate = ((((((unsigned)buffer[27] << 8) | buffer[26]) << 8) | buffer[25]) << 8) | buffer[24];
channels = 2;
bps = 16;
total_samples = (((((((unsigned)buffer[43] << 8) | buffer[42]) << 8) | buffer[41]) << 8) | buffer[40]) / 4;
/* allocate the encoder */
if((encoder = FLAC__stream_encoder_new()) == NULL) {
fprintf(stderr, "ERROR: allocating encoder\n");
fclose(fin);
return 1;
}
ok &= FLAC__stream_encoder_set_verify(encoder, true);
ok &= FLAC__stream_encoder_set_compression_level(encoder, 5);
ok &= FLAC__stream_encoder_set_channels(encoder, channels);
ok &= FLAC__stream_encoder_set_bits_per_sample(encoder, bps);
ok &= FLAC__stream_encoder_set_sample_rate(encoder, sample_rate);
ok &= FLAC__stream_encoder_set_total_samples_estimate(encoder, total_samples);
/* now add some metadata; we'll add some tags and a padding block */
if(ok) {
if(
(metadata[0] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)) == NULL ||
(metadata[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)) == NULL ||
/* there are many tag (vorbiscomment) functions but these are convenient for this particular use: */
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ARTIST", "Some Artist") ||
!FLAC__metadata_object_vorbiscomment_append_comment(metadata[0], entry, /*copy=*/false) || /* copy=false: let metadata object take control of entry's allocated string */
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "YEAR", "1984") ||
!FLAC__metadata_object_vorbiscomment_append_comment(metadata[0], entry, /*copy=*/false)
) {
fprintf(stderr, "ERROR: out of memory or tag error\n");
ok = false;
}
metadata[1]->length = 1234; /* set the padding length */
ok = FLAC__stream_encoder_set_metadata(encoder, metadata, 2);
}
/* initialize encoder */
if(ok) {
init_status = FLAC__stream_encoder_init_file(encoder, argv[2], progress_callback, /*client_data=*/NULL);
if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
fprintf(stderr, "ERROR: initializing encoder: %s\n", FLAC__StreamEncoderInitStatusString[init_status]);
ok = false;
}
}
/* read blocks of samples from WAVE file and feed to encoder */
if(ok) {
size_t left = (size_t)total_samples;
while(ok && left) {
size_t need = (left>READSIZE? (size_t)READSIZE : (size_t)left);
if(fread(buffer, channels*(bps/8), need, fin) != need) {
fprintf(stderr, "ERROR: reading from WAVE file\n");
ok = false;
}
else {
/* convert the packed little-endian 16-bit PCM samples from WAVE into an interleaved FLAC__int32 buffer for libFLAC */
size_t i;
for(i = 0; i < need*channels; i++) {
/* inefficient but simple and works on big- or little-endian machines */
pcm[i] = (FLAC__int32)(((FLAC__int16)(FLAC__int8)buffer[2*i+1] << 8) | (FLAC__int16)buffer[2*i]);
}
/* feed samples to encoder */
ok = FLAC__stream_encoder_process_interleaved(encoder, pcm, need);
}
left -= need;
}
}
ok &= FLAC__stream_encoder_finish(encoder);
fprintf(stderr, "encoding: %s\n", ok? "succeeded" : "FAILED");
fprintf(stderr, " state: %s\n", FLAC__StreamEncoderStateString[FLAC__stream_encoder_get_state(encoder)]);
/* now that encoding is finished, the metadata can be freed */
FLAC__metadata_object_delete(metadata[0]);
FLAC__metadata_object_delete(metadata[1]);
FLAC__stream_encoder_delete(encoder);
fclose(fin);
return 0;
}
bool Start(void *ctx, int iInChannels, int iInRate, int iInBits,
const char* title, const char* artist,
const char* albumartist, const char* album,
const char* year, const char* track, const char* genre,
const char* comment, int iTrackLength)
{
flac_context *context = (flac_context *)ctx;
if (!context || !context->encoder)
return false;
// we accept only 2 / 44100 / 16 atm
if (iInChannels != 2 || iInRate != 44100 || iInBits != 16)
return false;
FLAC__bool ok = 1;
ok &= FLAC__stream_encoder_set_verify(context->encoder, true);
ok &= FLAC__stream_encoder_set_channels(context->encoder, iInChannels);
ok &= FLAC__stream_encoder_set_bits_per_sample(context->encoder, iInBits);
ok &= FLAC__stream_encoder_set_sample_rate(context->encoder, iInRate);
ok &= FLAC__stream_encoder_set_total_samples_estimate(context->encoder, iTrackLength / 4);
ok &= FLAC__stream_encoder_set_compression_level(context->encoder, level);
// now add some metadata
FLAC__StreamMetadata_VorbisComment_Entry entry;
if (ok)
{
if (
(context->metadata[0] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)) == NULL ||
(context->metadata[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)) == NULL ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ARTIST", artist) ||
!FLAC__metadata_object_vorbiscomment_append_comment(context->metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ALBUM", album) ||
!FLAC__metadata_object_vorbiscomment_append_comment(context->metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ALBUMARTIST", albumartist) ||
!FLAC__metadata_object_vorbiscomment_append_comment(context->metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "TITLE", title) ||
!FLAC__metadata_object_vorbiscomment_append_comment(context->metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "GENRE", genre) ||
!FLAC__metadata_object_vorbiscomment_append_comment(context->metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "TRACKNUMBER", track) ||
!FLAC__metadata_object_vorbiscomment_append_comment(context->metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "DATE", year) ||
!FLAC__metadata_object_vorbiscomment_append_comment(context->metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "COMMENT", comment) ||
!FLAC__metadata_object_vorbiscomment_append_comment(context->metadata[0], entry, false)
)
{
ok = false;
}
else
{
context->metadata[1]->length = 4096;
ok = FLAC__stream_encoder_set_metadata(context->encoder, context->metadata, 2);
}
}
// initialize encoder in stream mode
if (ok)
{
FLAC__StreamEncoderInitStatus init_status;
init_status = FLAC__stream_encoder_init_stream(context->encoder, write_callback_flac, seek_callback_flac, tell_callback_flac, NULL, context);
if (init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK)
{
ok = false;
}
}
if (!ok)
{
return false;
}
return true;
}
static int start_write(sox_format_t * const ft)
{
priv_t * p = (priv_t *)ft->priv;
FLAC__StreamEncoderState status;
unsigned compression_level = MAX_COMPRESSION; /* Default to "best" */
if (ft->encoding.compression != HUGE_VAL) {
compression_level = ft->encoding.compression;
if (compression_level != ft->encoding.compression ||
compression_level > MAX_COMPRESSION) {
lsx_fail_errno(ft, SOX_EINVAL,
"FLAC compression level must be a whole number from 0 to %i",
MAX_COMPRESSION);
return SOX_EOF;
}
}
p->encoder = FLAC__stream_encoder_new();
if (p->encoder == NULL) {
lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder instance");
return SOX_EOF;
}
p->decoded_samples = lsx_malloc(sox_globals.bufsiz * sizeof(FLAC__int32));
p->bits_per_sample = ft->encoding.bits_per_sample;
lsx_report("encoding at %i bits per sample", p->bits_per_sample);
FLAC__stream_encoder_set_channels(p->encoder, ft->signal.channels);
FLAC__stream_encoder_set_bits_per_sample(p->encoder, p->bits_per_sample);
FLAC__stream_encoder_set_sample_rate(p->encoder, (unsigned)(ft->signal.rate + .5));
{ /* Check if rate is streamable: */
static const unsigned streamable_rates[] =
{8000, 16000, 22050, 24000, 32000, 44100, 48000, 96000};
size_t i;
sox_bool streamable = sox_false;
for (i = 0; !streamable && i < array_length(streamable_rates); ++i)
streamable = (streamable_rates[i] == ft->signal.rate);
if (!streamable) {
lsx_report("non-standard rate; output may not be streamable");
FLAC__stream_encoder_set_streamable_subset(p->encoder, sox_false);
}
}
#if FLAC_API_VERSION_CURRENT >= 10
FLAC__stream_encoder_set_compression_level(p->encoder, compression_level);
#else
{
static struct {
unsigned blocksize;
FLAC__bool do_exhaustive_model_search;
FLAC__bool do_mid_side_stereo;
FLAC__bool loose_mid_side_stereo;
unsigned max_lpc_order;
unsigned max_residual_partition_order;
unsigned min_residual_partition_order;
} const options[MAX_COMPRESSION + 1] = {
{1152, sox_false, sox_false, sox_false, 0, 2, 2},
{1152, sox_false, sox_true, sox_true, 0, 2, 2},
{1152, sox_false, sox_true, sox_false, 0, 3, 0},
{4608, sox_false, sox_false, sox_false, 6, 3, 3},
{4608, sox_false, sox_true, sox_true, 8, 3, 3},
{4608, sox_false, sox_true, sox_false, 8, 3, 3},
{4608, sox_false, sox_true, sox_false, 8, 4, 0},
{4608, sox_true, sox_true, sox_false, 8, 6, 0},
{4608, sox_true, sox_true, sox_false, 12, 6, 0},
};
#define SET_OPTION(x) do {\
lsx_report(#x" = %i", options[compression_level].x); \
FLAC__stream_encoder_set_##x(p->encoder, options[compression_level].x);\
} while (0)
SET_OPTION(blocksize);
SET_OPTION(do_exhaustive_model_search);
SET_OPTION(max_lpc_order);
SET_OPTION(max_residual_partition_order);
SET_OPTION(min_residual_partition_order);
if (ft->signal.channels == 2) {
SET_OPTION(do_mid_side_stereo);
SET_OPTION(loose_mid_side_stereo);
}
#undef SET_OPTION
}
#endif
if (ft->signal.length != 0) {
FLAC__stream_encoder_set_total_samples_estimate(p->encoder, (FLAC__uint64)(ft->signal.length / ft->signal.channels));
p->metadata[p->num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_SEEKTABLE);
if (p->metadata[p->num_metadata] == NULL) {
lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder seek table template");
return SOX_EOF;
}
{
#if FLAC_API_VERSION_CURRENT >= 8
if (!FLAC__metadata_object_seektable_template_append_spaced_points_by_samples(p->metadata[p->num_metadata], (unsigned)(10 * ft->signal.rate + .5), (FLAC__uint64)(ft->signal.length/ft->signal.channels))) {
#else
size_t samples = 10 * ft->signal.rate;
size_t total_samples = ft->signal.length/ft->signal.channels;
if (!FLAC__metadata_object_seektable_template_append_spaced_points(p->metadata[p->num_metadata], total_samples / samples + (total_samples % samples != 0), (FLAC__uint64)total_samples)) {
#endif
lsx_fail_errno(ft, SOX_ENOMEM, "FLAC ERROR creating the encoder seek table points");
return SOX_EOF;
}
}
p->metadata[p->num_metadata]->is_last = sox_false; /* the encoder will set this for us */
++p->num_metadata;
}
if (ft->oob.comments) { /* Make the comment structure */
FLAC__StreamMetadata_VorbisComment_Entry entry;
int i;
p->metadata[p->num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
for (i = 0; ft->oob.comments[i]; ++i) {
static const char prepend[] = "Comment=";
char * text = lsx_calloc(strlen(prepend) + strlen(ft->oob.comments[i]) + 1, sizeof(*text));
/* Prepend `Comment=' if no field-name already in the comment */
if (!strchr(ft->oob.comments[i], '='))
strcpy(text, prepend);
entry.entry = (FLAC__byte *) strcat(text, ft->oob.comments[i]);
entry.length = strlen(text);
FLAC__metadata_object_vorbiscomment_append_comment(p->metadata[p->num_metadata], entry, /*copy= */ sox_true);
free(text);
}
++p->num_metadata;
}
if (p->num_metadata)
FLAC__stream_encoder_set_metadata(p->encoder, p->metadata, p->num_metadata);
#if FLAC_API_VERSION_CURRENT <= 7
FLAC__stream_encoder_set_write_callback(p->encoder, flac_stream_encoder_write_callback);
FLAC__stream_encoder_set_metadata_callback(p->encoder, flac_stream_encoder_metadata_callback);
FLAC__stream_encoder_set_client_data(p->encoder, ft);
status = FLAC__stream_encoder_init(p->encoder);
#else
status = FLAC__stream_encoder_init_stream(p->encoder, flac_stream_encoder_write_callback,
flac_stream_encoder_seek_callback, flac_stream_encoder_tell_callback, flac_stream_encoder_metadata_callback, ft);
#endif
if (status != FLAC__STREAM_ENCODER_OK) {
lsx_fail_errno(ft, SOX_EINVAL, "%s", FLAC__StreamEncoderStateString[status]);
return SOX_EOF;
}
return SOX_SUCCESS;
}
static size_t write_samples(sox_format_t * const ft, sox_sample_t const * const sampleBuffer, size_t const len)
{
priv_t * p = (priv_t *)ft->priv;
unsigned i;
for (i = 0; i < len; ++i) {
long pcm = SOX_SAMPLE_TO_SIGNED_32BIT(sampleBuffer[i], ft->clips);
p->decoded_samples[i] = pcm >> (32 - p->bits_per_sample);
switch (p->bits_per_sample) {
case 8: p->decoded_samples[i] =
SOX_SAMPLE_TO_SIGNED_8BIT(sampleBuffer[i], ft->clips);
break;
case 16: p->decoded_samples[i] =
SOX_SAMPLE_TO_SIGNED_16BIT(sampleBuffer[i], ft->clips);
break;
case 24: p->decoded_samples[i] = /* sign extension: */
SOX_SAMPLE_TO_SIGNED_24BIT(sampleBuffer[i],ft->clips) << 8;
p->decoded_samples[i] >>= 8;
break;
case 32: p->decoded_samples[i] =
SOX_SAMPLE_TO_SIGNED_32BIT(sampleBuffer[i],ft->clips);
break;
}
}
FLAC__stream_encoder_process_interleaved(p->encoder, p->decoded_samples, (unsigned) len / ft->signal.channels);
return FLAC__stream_encoder_get_state(p->encoder) == FLAC__STREAM_ENCODER_OK ? len : 0;
}
const char*
_edje_multisense_encode_to_flac(char *snd_path, SF_INFO sfinfo)
{
unsigned int total_samples = 0; /* can use a 32-bit number due to WAVE size limitations */
FLAC__bool ok = 1;
FLAC__StreamEncoder *encoder = 0;
FLAC__StreamEncoderInitStatus init_status;
FLAC__StreamMetadata *metadata[2];
FLAC__StreamMetadata_VorbisComment_Entry entry;
SNDFILE *sfile;
sf_count_t size;
char *tmp;
sfile = sf_open(snd_path, SFM_READ, &sfinfo);
if (!sfile) return NULL;
if (!sf_format_check(&sfinfo))
{
sf_close(sfile);
return NULL;
}
size = sf_seek(sfile, 0, SEEK_END);
sf_seek(sfile, 0, SEEK_SET);
tmp = malloc(strlen(snd_path) + 1 + 5);
if (!tmp)
{
sf_close(sfile);
return NULL;
}
strcpy(tmp, snd_path);
snd_path = tmp;
strcat(snd_path, ".flac");
total_samples = size;
/* allocate the encoder */
if ((encoder = FLAC__stream_encoder_new()) == NULL)
{
ERR("ERROR: Creating FLAC encoder\n");
free(snd_path);
sf_close(sfile);
return NULL;
}
/* Verify it's own encoded output. This will slow the encoding process. */
ok &= FLAC__stream_encoder_set_verify(encoder, 1);
//Levels range from 0 (fastest, least compression) to 8 (slowest, most compression).
//A value larger than 8 will be treated as 8.
//5 is used for good compression and moderate compression/decompression speed.
ok &= FLAC__stream_encoder_set_compression_level(encoder, 5);
ok &= FLAC__stream_encoder_set_channels(encoder, sfinfo.channels);
ok &= FLAC__stream_encoder_set_bits_per_sample(encoder, 16);
ok &= FLAC__stream_encoder_set_sample_rate(encoder, sfinfo.samplerate);
ok &= FLAC__stream_encoder_set_total_samples_estimate(encoder, total_samples);
/* now add some metadata; we'll add some tags and a padding block */
if (ok)
{
if ((metadata[0] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)) == NULL
|| (metadata[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)) == NULL
|| !FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "Encoder", "flac")
|| !FLAC__metadata_object_vorbiscomment_append_comment(metadata[0], entry, 0))
{
ERR("ERROR: out of memory error or tag error\n");
ok = 0;
}
metadata[1]->length = 16; /* set the padding length */
ok = FLAC__stream_encoder_set_metadata(encoder, metadata, 2);
}
/* initialize encoder */
if (ok)
{
init_status = FLAC__stream_encoder_init_file(encoder, snd_path, NULL,
(void *)(long)(total_samples));
if (init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK)
{
ERR("ERROR: unable to initialize FLAC encoder: %s\n",
FLAC__StreamEncoderInitStatusString[init_status]);
ok = 0;
}
}
/* read blocks of samples from WAVE file and feed to encoder */
while (ok)
{
FLAC__int32 readbuffer[READBUF * 2];
sf_count_t count;
int i;
count = sf_readf_int(sfile, readbuffer, READBUF);
if (count <= 0) break;
for (i = 0; i < (count * sfinfo.channels); i++)
readbuffer[i] = readbuffer[i] >> 16;
ok = FLAC__stream_encoder_process_interleaved(encoder, readbuffer,
count);
}
FLAC__stream_encoder_finish(encoder);
/* now that encoding is finished, the metadata can be freed */
FLAC__metadata_object_delete(metadata[0]);
FLAC__metadata_object_delete(metadata[1]);
FLAC__stream_encoder_delete(encoder);
sf_close(sfile);
return (snd_path);
}
bool CEncoderFlac::Start(int inChannels, int inRate, int inBits,
const std::string& title, const std::string& artist,
const std::string& albumartist, const std::string& album,
const std::string& year, const std::string& track, const std::string& genre,
const std::string& comment, int trackLength)
{
if (!m_encoder)
return false;
// we accept only 2 / 44100 / 16 atm
if (inChannels != 2 || inRate != 44100 || inBits != 16)
{
kodi::Log(ADDON_LOG_ERROR, "Invalid input format to encode");
return false;
}
FLAC__bool ok = 1;
ok &= FLAC__stream_encoder_set_verify(m_encoder, true);
ok &= FLAC__stream_encoder_set_channels(m_encoder, inChannels);
ok &= FLAC__stream_encoder_set_bits_per_sample(m_encoder, inBits);
ok &= FLAC__stream_encoder_set_sample_rate(m_encoder, inRate);
ok &= FLAC__stream_encoder_set_total_samples_estimate(m_encoder, trackLength / 4);
ok &= FLAC__stream_encoder_set_compression_level(m_encoder, kodi::GetSettingInt("level"));
// now add some metadata
FLAC__StreamMetadata_VorbisComment_Entry entry;
if (ok)
{
if (
(m_metadata[0] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)) == nullptr ||
(m_metadata[1] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)) == nullptr ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ARTIST", artist.c_str()) ||
!FLAC__metadata_object_vorbiscomment_append_comment(m_metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ALBUM", album.c_str()) ||
!FLAC__metadata_object_vorbiscomment_append_comment(m_metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "ALBUMARTIST", albumartist.c_str()) ||
!FLAC__metadata_object_vorbiscomment_append_comment(m_metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "TITLE", title.c_str()) ||
!FLAC__metadata_object_vorbiscomment_append_comment(m_metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "GENRE", genre.c_str()) ||
!FLAC__metadata_object_vorbiscomment_append_comment(m_metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "TRACKNUMBER", track.c_str()) ||
!FLAC__metadata_object_vorbiscomment_append_comment(m_metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "DATE", year.c_str()) ||
!FLAC__metadata_object_vorbiscomment_append_comment(m_metadata[0], entry, false) ||
!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "COMMENT", comment.c_str()) ||
!FLAC__metadata_object_vorbiscomment_append_comment(m_metadata[0], entry, false)
)
{
ok = false;
}
else
{
m_metadata[1]->length = 4096;
ok = FLAC__stream_encoder_set_metadata(m_encoder, m_metadata, 2);
}
}
// initialize encoder in stream mode
if (ok)
{
FLAC__StreamEncoderInitStatus init_status;
init_status = FLAC__stream_encoder_init_stream(m_encoder, write_callback_flac, seek_callback_flac, tell_callback_flac, nullptr, this);
if (init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK)
{
ok = false;
}
}
if (!ok)
{
kodi::Log(ADDON_LOG_ERROR, "Failed to create flac stream encoder");
return false;
}
return true;
}
