* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+#include "share/file_utils.h"
#include "share/replaygain.h"
#include "share/gain_analysis.h"
#include "FLAC/assert.h"
#include "FLAC/file_decoder.h"
#include "FLAC/metadata.h"
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
+#if defined _MSC_VER || defined __MINGW32__
+#include <io.h> /* for chmod() */
+#endif
+#include <sys/stat.h> /* for stat(), maybe chmod() */
#ifdef local_min
#undef local_min
#endif
#define local_min(a,b) ((a)<(b)?(a):(b))
+#ifdef local_max
+#undef local_max
+#endif
+#define local_max(a,b) ((a)>(b)?(a):(b))
+
static const FLAC__byte *tag_title_gain_ = "REPLAYGAIN_TRACK_GAIN";
static const FLAC__byte *tag_title_peak_ = "REPLAYGAIN_TRACK_PEAK";
static const FLAC__byte *tag_album_gain_ = "REPLAYGAIN_ALBUM_GAIN";
static const char *peak_format_ = "%s=%1.8f";
static const char *gain_format_ = "%s=%+2.2f dB";
+static double album_peak_, title_peak_;
+
+REPLAYGAIN_API const unsigned FLAC__REPLAYGAIN_MAX_TAG_SPACE_REQUIRED = 148;
+/*
+ FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 10 +
+ FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 12 +
+ FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 10 +
+ FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN/8 + 21 + 1 + 12
+*/
+
+
+static FLAC__bool get_file_stats_(const char *filename, struct stat *stats)
+{
+ FLAC__ASSERT(0 != filename);
+ FLAC__ASSERT(0 != stats);
+ return (0 == stat(filename, stats));
+}
+
+static void set_file_stats_(const char *filename, struct stat *stats)
+{
+ FLAC__ASSERT(0 != filename);
+ FLAC__ASSERT(0 != stats);
+
+ (void)chmod(filename, stats->st_mode);
+}
+
static FLAC__bool append_tag_(FLAC__StreamMetadata *block, const char *format, const FLAC__byte *name, float value)
{
char buffer[256];
REPLAYGAIN_API FLAC__bool FLAC__replaygain_init(unsigned sample_frequency)
{
+ title_peak_ = album_peak_ = 0.0;
return InitGainAnalysis((long)sample_frequency) == INIT_GAIN_ANALYSIS_OK;
}
/* using a small buffer improves data locality; we'd like it to fit easily in the dcache */
static Float_t lbuffer[2048], rbuffer[2048];
static const unsigned nbuffer = sizeof(lbuffer) / sizeof(lbuffer[0]);
+ FLAC__int32 block_peak = 0, s;
unsigned i, j;
- FLAC__ASSERT(bps >= 4 && bps <= 32);
+ FLAC__ASSERT(bps >= 4 && bps <= FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE);
FLAC__ASSERT(FLAC__MIN_BITS_PER_SAMPLE == 4);
- FLAC__ASSERT(FLAC__MAX_BITS_PER_SAMPLE == 32);
+ /*
+ * We use abs() on a FLAC__int32 which is undefined for the most negative value.
+ * If the reference codec ever handles 32bps we will have to write a special
+ * case here.
+ */
+ FLAC__ASSERT(FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE < 32);
if(bps == 16) {
if(is_stereo) {
while(samples > 0) {
const unsigned n = local_min(samples, nbuffer);
for(i = 0; i < n; i++, j++) {
- lbuffer[i] = (Float_t)input[0][j];
- rbuffer[i] = (Float_t)input[1][j];
+ s = input[0][j];
+ lbuffer[i] = (Float_t)s;
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+
+ s = input[1][j];
+ rbuffer[i] = (Float_t)s;
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
}
samples -= n;
if(AnalyzeSamples(lbuffer, rbuffer, n, 2) != GAIN_ANALYSIS_OK)
j = 0;
while(samples > 0) {
const unsigned n = local_min(samples, nbuffer);
- for(i = 0; i < n; i++, j++)
- lbuffer[i] = (Float_t)input[0][j];
+ for(i = 0; i < n; i++, j++) {
+ s = input[0][j];
+ lbuffer[i] = (Float_t)s;
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+ }
samples -= n;
if(AnalyzeSamples(lbuffer, 0, n, 1) != GAIN_ANALYSIS_OK)
return false;
}
}
}
- else {
+ else { /* bps must be < 32 according to above assertion */
const double scale = (
(bps > 16)?
(double)1. / (double)(1u << (bps - 16)) :
while(samples > 0) {
const unsigned n = local_min(samples, nbuffer);
for(i = 0; i < n; i++, j++) {
- lbuffer[i] = (Float_t)(scale * (double)input[0][j]);
- rbuffer[i] = (Float_t)(scale * (double)input[1][j]);
+ s = input[0][j];
+ lbuffer[i] = (Float_t)(scale * (double)s);
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+
+ s = input[1][j];
+ rbuffer[i] = (Float_t)(scale * (double)s);
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
}
samples -= n;
if(AnalyzeSamples(lbuffer, rbuffer, n, 2) != GAIN_ANALYSIS_OK)
j = 0;
while(samples > 0) {
const unsigned n = local_min(samples, nbuffer);
- for(i = 0; i < n; i++, j++)
- lbuffer[i] = (Float_t)(scale * (double)input[0][j]);
+ for(i = 0; i < n; i++, j++) {
+ s = input[0][j];
+ lbuffer[i] = (Float_t)(scale * (double)s);
+ s = abs(s);
+ block_peak = local_max(block_peak, s);
+ }
samples -= n;
if(AnalyzeSamples(lbuffer, 0, n, 1) != GAIN_ANALYSIS_OK)
return false;
}
}
+ {
+ const double peak_scale = (double)(1u << (bps - 1));
+ double peak = (double)block_peak / peak_scale;
+ if(peak > title_peak_)
+ title_peak_ = peak;
+ if(peak > album_peak_)
+ album_peak_ = peak;
+ }
+
return true;
}
-REPLAYGAIN_API float FLAC__replaygain_get_album_gain()
+REPLAYGAIN_API void FLAC__replaygain_get_album(float *gain, float *peak)
{
- return (float)GetAlbumGain();
+ *gain = (float)GetAlbumGain();
+ *peak = (float)album_peak_;
+ album_peak_ = 0.0;
}
-REPLAYGAIN_API float FLAC__replaygain_get_title_gain()
+REPLAYGAIN_API void FLAC__replaygain_get_title(float *gain, float *peak)
{
- return (float)GetTitleGain();
+ *gain = (float)GetTitleGain();
+ *peak = (float)title_peak_;
+ title_peak_ = 0.0;
}
unsigned channels;
unsigned bits_per_sample;
unsigned sample_rate;
- FLAC__int32 peak;
FLAC__bool error;
} DecoderInstance;
const unsigned channels = frame->header.channels;
const unsigned sample_rate = frame->header.sample_rate;
const unsigned samples = frame->header.blocksize;
- unsigned channel, sample;
(void)decoder;
channels == instance->channels &&
sample_rate == instance->sample_rate
) {
- for(channel = 0; channel < channels; channel++)
- for(sample = 0; sample < samples; sample++)
- if(instance->peak < buffer[channel][sample])
- instance->peak = buffer[channel][sample];
-
instance->error = !FLAC__replaygain_analyze(buffer, channels==2, bits_per_sample, samples);
}
else {
if(0 == decoder)
return "memory allocation error";
- instance.peak = 0;
instance.error = false;
/* It does these three by default but lets be explicit: */
FLAC__file_decoder_delete(decoder);
- *title_gain = FLAC__replaygain_get_title_gain();
- *title_peak = (double)instance.peak / (double)(1u << (instance.bits_per_sample-1));
+ FLAC__replaygain_get_title(title_gain, title_peak);
return 0;
}
REPLAYGAIN_API const char *FLAC__replaygain_store_to_vorbiscomment(FLAC__StreamMetadata *block, float album_gain, float album_peak, float title_gain, float title_peak)
{
+ const char *error;
+
+ if(0 != (error = FLAC__replaygain_store_to_vorbiscomment_title(block, title_gain, title_peak)))
+ return error;
+
+ if(0 != (error = FLAC__replaygain_store_to_vorbiscomment_album(block, album_gain, album_peak)))
+ return error;
+
+ return 0;
+}
+
+REPLAYGAIN_API const char *FLAC__replaygain_store_to_vorbiscomment_album(FLAC__StreamMetadata *block, float album_gain, float album_peak)
+{
FLAC__ASSERT(0 != block);
FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
if(
- FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_title_gain_) < 0 ||
- FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_title_peak_) < 0 ||
FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_album_gain_) < 0 ||
FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_album_peak_) < 0
)
return "memory allocation error";
if(
- !append_tag_(block, peak_format_, tag_title_peak_, title_peak) ||
- !append_tag_(block, gain_format_, tag_title_gain_, title_gain) ||
!append_tag_(block, peak_format_, tag_album_peak_, album_peak) ||
!append_tag_(block, gain_format_, tag_album_gain_, album_gain)
)
return 0;
}
-REPLAYGAIN_API const char *FLAC__replaygain_store_to_file(const char *filename, float album_gain, float album_peak, float title_gain, float title_peak, FLAC__bool preserve_modtime)
+REPLAYGAIN_API const char *FLAC__replaygain_store_to_vorbiscomment_title(FLAC__StreamMetadata *block, float title_gain, float title_peak)
+{
+ FLAC__ASSERT(0 != block);
+ FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+
+ if(
+ FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_title_gain_) < 0 ||
+ FLAC__metadata_object_vorbiscomment_remove_entries_matching(block, tag_title_peak_) < 0
+ )
+ return "memory allocation error";
+
+ if(
+ !append_tag_(block, peak_format_, tag_title_peak_, title_peak) ||
+ !append_tag_(block, gain_format_, tag_title_gain_, title_gain)
+ )
+ return "memory allocation error";
+
+ return 0;
+}
+
+static const char *store_to_file_pre_(const char *filename, FLAC__Metadata_Chain **chain, FLAC__StreamMetadata **block)
{
- FLAC__Metadata_Chain *chain;
FLAC__Metadata_Iterator *iterator;
- FLAC__StreamMetadata *block;
const char *error;
FLAC__bool found_vc_block = false;
- if(0 == (chain = FLAC__metadata_chain_new()))
+ if(0 == (*chain = FLAC__metadata_chain_new()))
return "memory allocation error";
- if(!FLAC__metadata_chain_read(chain, filename)) {
- error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)];
- FLAC__metadata_chain_delete(chain);
+ if(!FLAC__metadata_chain_read(*chain, filename)) {
+ error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(*chain)];
+ FLAC__metadata_chain_delete(*chain);
return error;
}
if(0 == (iterator = FLAC__metadata_iterator_new())) {
- FLAC__metadata_chain_delete(chain);
+ FLAC__metadata_chain_delete(*chain);
return "memory allocation error";
}
- FLAC__metadata_iterator_init(iterator, chain);
+ FLAC__metadata_iterator_init(iterator, *chain);
do {
- block = FLAC__metadata_iterator_get_block(iterator);
- if(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
+ *block = FLAC__metadata_iterator_get_block(iterator);
+ if((*block)->type == FLAC__METADATA_TYPE_VORBIS_COMMENT)
found_vc_block = true;
} while(!found_vc_block && FLAC__metadata_iterator_next(iterator));
if(!found_vc_block) {
/* create a new block */
- block = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
- if(0 == block) {
- FLAC__metadata_chain_delete(chain);
+ *block = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
+ if(0 == *block) {
+ FLAC__metadata_chain_delete(*chain);
FLAC__metadata_iterator_delete(iterator);
return "memory allocation error";
}
while(FLAC__metadata_iterator_next(iterator))
;
- if(!FLAC__metadata_iterator_insert_block_after(iterator, block)) {
- error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)];
- FLAC__metadata_chain_delete(chain);
+ if(!FLAC__metadata_iterator_insert_block_after(iterator, *block)) {
+ error = FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(*chain)];
+ FLAC__metadata_chain_delete(*chain);
FLAC__metadata_iterator_delete(iterator);
return error;
}
/* iterator is left pointing to new block */
- FLAC__ASSERT(FLAC__metadata_iterator_get_block(iterator) == block);
+ FLAC__ASSERT(FLAC__metadata_iterator_get_block(iterator) == *block);
}
FLAC__metadata_iterator_delete(iterator);
- FLAC__ASSERT(0 != block);
- FLAC__ASSERT(block->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
+ FLAC__ASSERT(0 != *block);
+ FLAC__ASSERT((*block)->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
- if(0 != (error = FLAC__replaygain_store_to_vorbiscomment(block, album_gain, album_peak, title_gain, title_peak))) {
- FLAC__metadata_chain_delete(chain);
- FLAC__metadata_iterator_delete(iterator);
- return error;
- }
+ return 0;
+}
+
+static const char *store_to_file_post_(const char *filename, FLAC__Metadata_Chain *chain, FLAC__bool preserve_modtime)
+{
+ struct stat stats;
+ const FLAC__bool have_stats = get_file_stats_(filename, &stats);
+
+ (void)FLAC__file_utils_change_stats(filename, /*read_only=*/false);
FLAC__metadata_chain_sort_padding(chain);
if(!FLAC__metadata_chain_write(chain, /*use_padding=*/true, preserve_modtime)) {
FLAC__metadata_chain_delete(chain);
+ if(have_stats)
+ set_file_stats_(filename, &stats);
+
+ return 0;
+}
+
+REPLAYGAIN_API const char *FLAC__replaygain_store_to_file(const char *filename, float album_gain, float album_peak, float title_gain, float title_peak, FLAC__bool preserve_modtime)
+{
+ FLAC__Metadata_Chain *chain;
+ FLAC__StreamMetadata *block;
+ const char *error;
+
+ if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
+ return error;
+
+ if(0 != (error = FLAC__replaygain_store_to_vorbiscomment(block, album_gain, album_peak, title_gain, title_peak))) {
+ FLAC__metadata_chain_delete(chain);
+ return error;
+ }
+
+ if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
+ return error;
+
+ return 0;
+}
+
+REPLAYGAIN_API const char *FLAC__replaygain_store_to_file_album(const char *filename, float album_gain, float album_peak, FLAC__bool preserve_modtime)
+{
+ FLAC__Metadata_Chain *chain;
+ FLAC__StreamMetadata *block;
+ const char *error;
+
+ if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
+ return error;
+
+ if(0 != (error = FLAC__replaygain_store_to_vorbiscomment_album(block, album_gain, album_peak))) {
+ FLAC__metadata_chain_delete(chain);
+ return error;
+ }
+
+ if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
+ return error;
+
+ return 0;
+}
+
+REPLAYGAIN_API const char *FLAC__replaygain_store_to_file_title(const char *filename, float title_gain, float title_peak, FLAC__bool preserve_modtime)
+{
+ FLAC__Metadata_Chain *chain;
+ FLAC__StreamMetadata *block;
+ const char *error;
+
+ if(0 != (error = store_to_file_pre_(filename, &chain, &block)))
+ return error;
+
+ if(0 != (error = FLAC__replaygain_store_to_vorbiscomment_title(block, title_gain, title_peak))) {
+ FLAC__metadata_chain_delete(chain);
+ return error;
+ }
+
+ if(0 != (error = store_to_file_post_(filename, chain, preserve_modtime)))
+ return error;
+
return 0;
}
projects / platform / upstream / flac.git / commitdiff