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-rw-r--r--src/decoder/_flac_common.c431
1 files changed, 124 insertions, 307 deletions
diff --git a/src/decoder/_flac_common.c b/src/decoder/_flac_common.c
index 7c8fe9875..6e28792ec 100644
--- a/src/decoder/_flac_common.c
+++ b/src/decoder/_flac_common.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * Copyright (C) 2003-2010 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
@@ -21,7 +21,11 @@
* Common data structures and functions used by FLAC and OggFLAC
*/
+#include "config.h"
#include "_flac_common.h"
+#include "flac_metadata.h"
+#include "flac_pcm.h"
+#include "audio_check.h"
#include <glib.h>
@@ -31,186 +35,104 @@ void
flac_data_init(struct flac_data *data, struct decoder * decoder,
struct input_stream *input_stream)
{
- data->time = 0;
+ pcm_buffer_init(&data->buffer);
+
+ data->unsupported = false;
+ data->initialized = false;
+ data->total_frames = 0;
+ data->first_frame = 0;
+ data->next_frame = 0;
+
data->position = 0;
- data->bit_rate = 0;
data->decoder = decoder;
data->input_stream = input_stream;
- data->replay_gain_info = NULL;
data->tag = NULL;
}
-static void
-flac_find_float_comment(const FLAC__StreamMetadata *block,
- const char *cmnt, float *fl, bool *found_r)
+void
+flac_data_deinit(struct flac_data *data)
{
- int offset;
- size_t pos;
- int len;
- unsigned char tmp, *p;
-
- offset = FLAC__metadata_object_vorbiscomment_find_entry_from(block, 0,
- cmnt);
- if (offset < 0)
- return;
-
- pos = strlen(cmnt) + 1; /* 1 is for '=' */
- len = block->data.vorbis_comment.comments[offset].length - pos;
- if (len <= 0)
- return;
-
- p = &block->data.vorbis_comment.comments[offset].entry[pos];
- tmp = p[len];
- p[len] = '\0';
- *fl = (float)atof((char *)p);
- p[len] = tmp;
-
- *found_r = true;
-}
+ pcm_buffer_deinit(&data->buffer);
-static void
-flac_parse_replay_gain(const FLAC__StreamMetadata *block,
- struct flac_data *data)
-{
- bool found = false;
-
- if (data->replay_gain_info)
- replay_gain_info_free(data->replay_gain_info);
-
- data->replay_gain_info = replay_gain_info_new();
-
- flac_find_float_comment(block, "replaygain_album_gain",
- &data->replay_gain_info->tuples[REPLAY_GAIN_ALBUM].gain,
- &found);
- flac_find_float_comment(block, "replaygain_album_peak",
- &data->replay_gain_info->tuples[REPLAY_GAIN_ALBUM].peak,
- &found);
- flac_find_float_comment(block, "replaygain_track_gain",
- &data->replay_gain_info->tuples[REPLAY_GAIN_TRACK].gain,
- &found);
- flac_find_float_comment(block, "replaygain_track_peak",
- &data->replay_gain_info->tuples[REPLAY_GAIN_TRACK].peak,
- &found);
-
- if (!found) {
- replay_gain_info_free(data->replay_gain_info);
- data->replay_gain_info = NULL;
- }
+ if (data->tag != NULL)
+ tag_free(data->tag);
}
-/**
- * Checks if the specified name matches the entry's name, and if yes,
- * returns the comment value (not null-temrinated).
- */
-static const char *
-flac_comment_value(const FLAC__StreamMetadata_VorbisComment_Entry *entry,
- const char *name, const char *char_tnum, size_t *length_r)
+static enum sample_format
+flac_sample_format(unsigned bits_per_sample)
{
- size_t name_length = strlen(name);
- size_t char_tnum_length = 0;
- const char *comment = (const char*)entry->entry;
-
- if (entry->length <= name_length ||
- g_ascii_strncasecmp(comment, name, name_length) != 0)
- return NULL;
-
- if (char_tnum != NULL) {
- char_tnum_length = strlen(char_tnum);
- if (entry->length > name_length + char_tnum_length + 2 &&
- comment[name_length] == '[' &&
- g_ascii_strncasecmp(comment + name_length + 1,
- char_tnum, char_tnum_length) == 0 &&
- comment[name_length + char_tnum_length + 1] == ']')
- name_length = name_length + char_tnum_length + 2;
- else if (entry->length > name_length + char_tnum_length &&
- g_ascii_strncasecmp(comment + name_length,
- char_tnum, char_tnum_length) == 0)
- name_length = name_length + char_tnum_length;
- }
+ switch (bits_per_sample) {
+ case 8:
+ return SAMPLE_FORMAT_S8;
- if (comment[name_length] == '=') {
- *length_r = entry->length - name_length - 1;
- return comment + name_length + 1;
- }
+ case 16:
+ return SAMPLE_FORMAT_S16;
- return NULL;
-}
+ case 24:
+ return SAMPLE_FORMAT_S24_P32;
-/**
- * Check if the comment's name equals the passed name, and if so, copy
- * the comment value into the tag.
- */
-static bool
-flac_copy_comment(struct tag *tag,
- const FLAC__StreamMetadata_VorbisComment_Entry *entry,
- const char *name, enum tag_type tag_type,
- const char *char_tnum)
-{
- const char *value;
- size_t value_length;
+ case 32:
+ return SAMPLE_FORMAT_S32;
- value = flac_comment_value(entry, name, char_tnum, &value_length);
- if (value != NULL) {
- tag_add_item_n(tag, tag_type, value, value_length);
- return true;
+ default:
+ return SAMPLE_FORMAT_UNDEFINED;
}
-
- return false;
}
-/* tracknumber is used in VCs, MPD uses "track" ..., all the other
- * tag names match */
-static const char *VORBIS_COMMENT_TRACK_KEY = "tracknumber";
-static const char *VORBIS_COMMENT_DISC_KEY = "discnumber";
-
static void
-flac_parse_comment(struct tag *tag, const char *char_tnum,
- const FLAC__StreamMetadata_VorbisComment_Entry *entry)
+flac_got_stream_info(struct flac_data *data,
+ const FLAC__StreamMetadata_StreamInfo *stream_info)
{
- assert(tag != NULL);
-
- if (flac_copy_comment(tag, entry, VORBIS_COMMENT_TRACK_KEY,
- TAG_ITEM_TRACK, char_tnum) ||
- flac_copy_comment(tag, entry, VORBIS_COMMENT_DISC_KEY,
- TAG_ITEM_DISC, char_tnum) ||
- flac_copy_comment(tag, entry, "album artist",
- TAG_ITEM_ALBUM_ARTIST, char_tnum))
+ if (data->initialized || data->unsupported)
return;
- for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i)
- if (flac_copy_comment(tag, entry,
- tag_item_names[i], i, char_tnum))
- return;
-}
+ GError *error = NULL;
+ if (!audio_format_init_checked(&data->audio_format,
+ stream_info->sample_rate,
+ flac_sample_format(stream_info->bits_per_sample),
+ stream_info->channels, &error)) {
+ g_warning("%s", error->message);
+ g_error_free(error);
+ data->unsupported = true;
+ return;
+ }
-void
-flac_vorbis_comments_to_tag(struct tag *tag, const char *char_tnum,
- const FLAC__StreamMetadata *block)
-{
- FLAC__StreamMetadata_VorbisComment_Entry *comments =
- block->data.vorbis_comment.comments;
+ data->frame_size = audio_format_frame_size(&data->audio_format);
- for (unsigned i = block->data.vorbis_comment.num_comments; i > 0; --i)
- flac_parse_comment(tag, char_tnum, comments++);
+ if (data->total_frames == 0)
+ data->total_frames = stream_info->total_samples;
+
+ decoder_initialized(data->decoder, &data->audio_format,
+ data->input_stream->seekable,
+ (float)data->total_frames /
+ (float)data->audio_format.sample_rate);
+
+ data->initialized = true;
}
void flac_metadata_common_cb(const FLAC__StreamMetadata * block,
struct flac_data *data)
{
- const FLAC__StreamMetadata_StreamInfo *si = &(block->data.stream_info);
+ if (data->unsupported)
+ return;
+
+ struct replay_gain_info *rgi;
switch (block->type) {
case FLAC__METADATA_TYPE_STREAMINFO:
- data->audio_format.bits = (int8_t)si->bits_per_sample;
- data->audio_format.sample_rate = si->sample_rate;
- data->audio_format.channels = (int8_t)si->channels;
- data->total_time = ((float)si->total_samples) / (si->sample_rate);
+ flac_got_stream_info(data, &block->data.stream_info);
break;
+
case FLAC__METADATA_TYPE_VORBIS_COMMENT:
- flac_parse_replay_gain(block, data);
+ rgi = flac_parse_replay_gain(block);
+ if (rgi != NULL) {
+ decoder_replay_gain(data->decoder, rgi);
+ replay_gain_info_free(rgi);
+ }
if (data->tag != NULL)
- flac_vorbis_comments_to_tag(data->tag, NULL, block);
+ flac_vorbis_comments_to_tag(data->tag, NULL,
+ &block->data.vorbis_comment);
default:
break;
@@ -239,187 +161,82 @@ void flac_error_common_cb(const char *plugin,
}
}
-static void flac_convert_stereo16(int16_t *dest,
- const FLAC__int32 * const buf[],
- unsigned int position, unsigned int end)
-{
- for (; position < end; ++position) {
- *dest++ = buf[0][position];
- *dest++ = buf[1][position];
- }
-}
-
-static void
-flac_convert_16(int16_t *dest,
- unsigned int num_channels,
- const FLAC__int32 * const buf[],
- unsigned int position, unsigned int end)
-{
- unsigned int c_chan;
-
- for (; position < end; ++position)
- for (c_chan = 0; c_chan < num_channels; c_chan++)
- *dest++ = buf[c_chan][position];
-}
-
/**
- * Note: this function also handles 24 bit files!
+ * This function attempts to call decoder_initialized() in case there
+ * was no STREAMINFO block. This is allowed for nonseekable streams,
+ * where the server sends us only a part of the file, without
+ * providing the STREAMINFO block from the beginning of the file
+ * (e.g. when seeking with SqueezeBox Server).
*/
-static void
-flac_convert_32(int32_t *dest,
- unsigned int num_channels,
- const FLAC__int32 * const buf[],
- unsigned int position, unsigned int end)
-{
- unsigned int c_chan;
-
- for (; position < end; ++position)
- for (c_chan = 0; c_chan < num_channels; c_chan++)
- *dest++ = buf[c_chan][position];
-}
-
-static void
-flac_convert_8(int8_t *dest,
- unsigned int num_channels,
- const FLAC__int32 * const buf[],
- unsigned int position, unsigned int end)
-{
- unsigned int c_chan;
+static bool
+flac_got_first_frame(struct flac_data *data, const FLAC__FrameHeader *header)
+{
+ if (data->unsupported)
+ return false;
+
+ GError *error = NULL;
+ if (!audio_format_init_checked(&data->audio_format,
+ header->sample_rate,
+ flac_sample_format(header->bits_per_sample),
+ header->channels, &error)) {
+ g_warning("%s", error->message);
+ g_error_free(error);
+ data->unsupported = true;
+ return false;
+ }
- for (; position < end; ++position)
- for (c_chan = 0; c_chan < num_channels; c_chan++)
- *dest++ = buf[c_chan][position];
-}
+ data->frame_size = audio_format_frame_size(&data->audio_format);
-static void flac_convert(unsigned char *dest,
- unsigned int num_channels,
- unsigned int bytes_per_sample,
- const FLAC__int32 * const buf[],
- unsigned int position, unsigned int end)
-{
- switch (bytes_per_sample) {
- case 2:
- if (num_channels == 2)
- flac_convert_stereo16((int16_t*)dest, buf,
- position, end);
- else
- flac_convert_16((int16_t*)dest, num_channels, buf,
- position, end);
- break;
+ decoder_initialized(data->decoder, &data->audio_format,
+ data->input_stream->seekable,
+ (float)data->total_frames /
+ (float)data->audio_format.sample_rate);
- case 4:
- flac_convert_32((int32_t*)dest, num_channels, buf,
- position, end);
- break;
+ data->initialized = true;
- case 1:
- flac_convert_8((int8_t*)dest, num_channels, buf,
- position, end);
- break;
- }
+ return true;
}
FLAC__StreamDecoderWriteStatus
flac_common_write(struct flac_data *data, const FLAC__Frame * frame,
- const FLAC__int32 *const buf[])
+ const FLAC__int32 *const buf[],
+ FLAC__uint64 nbytes)
{
- unsigned int c_samp;
- const unsigned int num_channels = frame->header.channels;
- const unsigned int bytes_per_sample =
- audio_format_sample_size(&data->audio_format);
- const unsigned int bytes_per_channel =
- bytes_per_sample * frame->header.channels;
- const unsigned int max_samples = FLAC_CHUNK_SIZE / bytes_per_channel;
- unsigned int num_samples;
enum decoder_command cmd;
+ void *buffer;
+ unsigned bit_rate;
- if (bytes_per_sample != 1 && bytes_per_sample != 2 &&
- bytes_per_sample != 4)
- /* exotic unsupported bit rate */
+ if (!data->initialized && !flac_got_first_frame(data, &frame->header))
return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
- for (c_samp = 0; c_samp < frame->header.blocksize;
- c_samp += num_samples) {
- num_samples = frame->header.blocksize - c_samp;
- if (num_samples > max_samples)
- num_samples = max_samples;
-
- flac_convert(data->chunk,
- num_channels, bytes_per_sample, buf,
- c_samp, c_samp + num_samples);
-
- cmd = decoder_data(data->decoder, data->input_stream,
- data->chunk,
- num_samples * bytes_per_channel,
- data->time, data->bit_rate,
- data->replay_gain_info);
- switch (cmd) {
- case DECODE_COMMAND_NONE:
- case DECODE_COMMAND_START:
- break;
-
- case DECODE_COMMAND_STOP:
- return
- FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
-
- case DECODE_COMMAND_SEEK:
- return
- FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
- }
- }
-
- return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
-}
-
-#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
-
-char*
-flac_cue_track( const char* pathname,
- const unsigned int tnum)
-{
- FLAC__bool success;
- FLAC__StreamMetadata* cs;
-
- success = FLAC__metadata_get_cuesheet(pathname, &cs);
- if (!success)
- return NULL;
-
- assert(cs != NULL);
+ size_t buffer_size = frame->header.blocksize * data->frame_size;
+ buffer = pcm_buffer_get(&data->buffer, buffer_size);
- if (cs->data.cue_sheet.num_tracks <= 1)
- {
- FLAC__metadata_object_delete(cs);
- return NULL;
- }
+ flac_convert(buffer, frame->header.channels,
+ data->audio_format.format, buf,
+ 0, frame->header.blocksize);
- if (tnum > 0 && tnum < cs->data.cue_sheet.num_tracks)
- {
- char* track = g_strdup_printf("track_%03u.flac", tnum);
+ if (nbytes > 0)
+ bit_rate = nbytes * 8 * frame->header.sample_rate /
+ (1000 * frame->header.blocksize);
+ else
+ bit_rate = 0;
+
+ cmd = decoder_data(data->decoder, data->input_stream,
+ buffer, buffer_size,
+ bit_rate);
+ data->next_frame += frame->header.blocksize;
+ switch (cmd) {
+ case DECODE_COMMAND_NONE:
+ case DECODE_COMMAND_START:
+ break;
- FLAC__metadata_object_delete(cs);
+ case DECODE_COMMAND_STOP:
+ return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT;
- return track;
- }
- else
- {
- FLAC__metadata_object_delete(cs);
- return NULL;
+ case DECODE_COMMAND_SEEK:
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
-}
-unsigned int
-flac_vtrack_tnum(const char* fname)
-{
- /* find last occurrence of '_' in fname
- * which is hopefully something like track_xxx.flac
- * another/better way would be to use tag struct
- */
- char* ptr = strrchr(fname, '_');
- if (ptr == NULL)
- return 0;
-
- // copy ascii tracknumber to int
- return (unsigned int)strtol(++ptr, NULL, 10);
+ return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
-
-#endif /* FLAC_API_VERSION_CURRENT >= 7 */