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Diffstat (limited to 'src/flac_header.c')
| -rwxr-xr-x | src/flac_header.c | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/src/flac_header.c b/src/flac_header.c new file mode 100755 index 0000000..408b73b --- /dev/null +++ b/src/flac_header.c @@ -0,0 +1,335 @@ +/* flac_header.c - 2002/07/03 */ +/* + * EasyTAG - Tag editor for MP3 and Ogg Vorbis files + * Copyright (C) 2000-2003 Jerome Couderc <easytag@gmail.com> + * + * This program 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 2 of the License, or + * (at your option) any later version. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/* + * Code taken from : + * FLAC - Free Lossless Audio Codec - v1.0.3 + * Copyright (C) 2001 Josh Coalson + * + */ + +#include <config.h> // For definition of ENABLE_FLAC + +#ifdef ENABLE_FLAC + +#include <gtk/gtk.h> +#include <glib/gi18n-lib.h> +#include <stdio.h> +#include <errno.h> +#include <string.h> // 20030519 <tmancill@debian.org> for compiliation on ia64 arch +#include <FLAC/all.h> + +#include "easytag.h" +#include "et_core.h" +#include "log.h" +#include "misc.h" +#include "charset.h" + +/* Patch from Josh Coalson + * FLAC 1.1.3 has FLAC_API_VERSION_CURRENT == 8 * + * by LEGACY_FLAC we mean pre-FLAC 1.1.3; in FLAC 1.1.3 the FLAC__FileDecoder was merged into the FLAC__StreamDecoder */ +#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT < 8 +#define LEGACY_FLAC // For FLAC version < 1.1.3 +#else +#undef LEGACY_FLAC +#endif + + +/**************** + * Declarations * + ****************/ +/* Taken in "xmms/plugin.h" */ +typedef enum +{ + FMT_U8, FMT_S8, FMT_U16_LE, FMT_U16_BE, FMT_U16_NE, FMT_S16_LE, FMT_S16_BE, FMT_S16_NE +} +AFormat; + +typedef struct { + FLAC__bool abort_flag; + FLAC__bool is_playing; + FLAC__bool eof; + FLAC__bool play_thread_open; /* if true, is_playing must also be true */ + unsigned total_samples; + unsigned bits_per_sample; + unsigned channels; + unsigned sample_rate; + unsigned length_in_msec; + AFormat sample_format; // Note : defined in XMMS devel + int seek_to_in_sec; +} file_info_struct; + + +static FLAC__byte reservoir_[FLAC__MAX_BLOCK_SIZE * 2 * 2 * 2]; /* *2 for max bytes-per-sample, *2 for max channels, another *2 for overflow */ +static unsigned reservoir_samples_ = 0; + + +/************** + * Prototypes * + **************/ +#ifdef LEGACY_FLAC +static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); +static void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data); +static void error_callback_ (const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); +#else +static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); +static void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data); +static void error_callback_ (const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); +#endif + + + +/************* + * Functions * + *************/ + +/**************************** + * Header info of FLAC file * + ****************************/ + +gboolean Flac_Header_Read_File_Info (gchar *filename, ET_File_Info *ETFileInfo) +{ + FILE *file; + gdouble duration = 0; + gulong filesize; + +#ifdef LEGACY_FLAC + FLAC__FileDecoder *tmp_decoder; +#else + FLAC__StreamDecoder *tmp_decoder; +#endif + file_info_struct tmp_file_info; + + if (!filename || !ETFileInfo) + return FALSE; + + if ( (file=fopen(filename,"r"))==NULL ) + { + gchar *filename_utf8 = filename_to_display(filename); + Log_Print(_("ERROR while opening file: '%s' (%s)."),filename_utf8,g_strerror(errno)); + g_free(filename_utf8); + return FALSE; + } + fclose(file); + + /* Decoding FLAC file */ +#ifdef LEGACY_FLAC + tmp_decoder = FLAC__file_decoder_new(); +#else + tmp_decoder = FLAC__stream_decoder_new(); +#endif + if (tmp_decoder == 0) + { + return FALSE; + } + + tmp_file_info.abort_flag = false; +#ifdef LEGACY_FLAC + FLAC__file_decoder_set_md5_checking (tmp_decoder, false); + FLAC__file_decoder_set_filename (tmp_decoder, filename); + FLAC__file_decoder_set_write_callback (tmp_decoder, write_callback_); + FLAC__file_decoder_set_metadata_callback(tmp_decoder, metadata_callback_); + FLAC__file_decoder_set_error_callback (tmp_decoder, error_callback_); + FLAC__file_decoder_set_client_data (tmp_decoder, &tmp_file_info); + if (FLAC__file_decoder_init(tmp_decoder) != FLAC__FILE_DECODER_OK) + { + return FALSE; + } + +#else + FLAC__stream_decoder_set_md5_checking (tmp_decoder, false); + if(FLAC__stream_decoder_init_file(tmp_decoder, filename, write_callback_, metadata_callback_, error_callback_, &tmp_file_info) != FLAC__STREAM_DECODER_INIT_STATUS_OK) + return FALSE; +#endif + +#ifdef LEGACY_FLAC + // In FLAC 1.0.3, is used : FLAC__file_decoder_process_metadata + // In FLAC 1.0.4, is used : FLAC__file_decoder_process_until_end_of_metadata +#if ( (LIBFLAC_MAJOR <= 1) && (LIBFLAC_MINOR <= 0) && (LIBFLAC_PATCH <= 3) ) + if (!FLAC__file_decoder_process_metadata(tmp_decoder)) // FLAC 1.0.3 +#else + if (!FLAC__file_decoder_process_until_end_of_metadata(tmp_decoder)) // FLAC 1.0.4 (Bastian Kleineidam) +#endif +#else + if(!FLAC__stream_decoder_process_until_end_of_metadata(tmp_decoder)) +#endif + { + return FALSE; + } + +#ifdef LEGACY_FLAC + FLAC__file_decoder_finish(tmp_decoder); + FLAC__file_decoder_delete(tmp_decoder); +#else + FLAC__stream_decoder_finish(tmp_decoder); + FLAC__stream_decoder_delete(tmp_decoder); +#endif + /* End of decoding FLAC file */ + + + filesize = Get_File_Size(filename); + duration = (gint)tmp_file_info.length_in_msec/1000; + + ETFileInfo->version = 0; // Not defined in FLAC file + if (duration > 0) + ETFileInfo->bitrate = filesize*8/duration/1000; // FIXME : Approximation!! Needs to remove tag size! + ETFileInfo->samplerate = tmp_file_info.sample_rate; + ETFileInfo->mode = tmp_file_info.channels; + ETFileInfo->size = filesize; + ETFileInfo->duration = duration; + + return TRUE; +} + + + +#ifdef LEGACY_FLAC +FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) +#else +FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) +#endif +{ + file_info_struct *file_info = (file_info_struct *)client_data; + const unsigned bps = file_info->bits_per_sample, channels = file_info->channels, wide_samples = frame->header.blocksize; + unsigned wide_sample, sample, channel; + FLAC__int8 *scbuffer = (FLAC__int8*)reservoir_; + FLAC__int16 *ssbuffer = (FLAC__int16*)reservoir_; + + (void)decoder; + + if (file_info->abort_flag) + return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; + + if (bps == 8) { + for(sample = reservoir_samples_*channels, wide_sample = 0; wide_sample < wide_samples; wide_sample++) + for(channel = 0; channel < channels; channel++, sample++) + scbuffer[sample] = (FLAC__int8)buffer[channel][wide_sample]; + } + else if (bps == 16) { + for(sample = reservoir_samples_*channels, wide_sample = 0; wide_sample < wide_samples; wide_sample++) + for(channel = 0; channel < channels; channel++, sample++) + ssbuffer[sample] = (FLAC__int16)buffer[channel][wide_sample]; + } + else { + file_info->abort_flag = true; + return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; + } + + reservoir_samples_ += wide_samples; + + return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; +} + +#ifdef LEGACY_FLAC +void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) +#else +void metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) +#endif +{ + file_info_struct *file_info = (file_info_struct *)client_data; + (void)decoder; + if (metadata->type == FLAC__METADATA_TYPE_STREAMINFO) { + FLAC__ASSERT(metadata->data.stream_info.total_samples < 0x100000000); /* this plugin can only handle < 4 gigasamples */ + file_info->total_samples = (unsigned)(metadata->data.stream_info.total_samples&0xffffffff); + file_info->bits_per_sample = metadata->data.stream_info.bits_per_sample; + file_info->channels = metadata->data.stream_info.channels; + file_info->sample_rate = metadata->data.stream_info.sample_rate; + + if (file_info->bits_per_sample == 8) { + file_info->sample_format = FMT_S8; + } + else if (file_info->bits_per_sample == 16) { + file_info->sample_format = FMT_S16_NE; + } + else { + file_info->abort_flag = true; + return; + } + file_info->length_in_msec = file_info->total_samples * 10 / (file_info->sample_rate / 100); + } +} + +#ifdef LEGACY_FLAC +void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) +#else +void error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) +#endif +{ + file_info_struct *file_info = (file_info_struct *)client_data; + (void)decoder; + if (status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC) + file_info->abort_flag = true; +} + + + + +gboolean Flac_Header_Display_File_Info_To_UI (gchar *filename_utf8, ET_File_Info *ETFileInfo) +{ + gchar *text; + gchar *time = NULL; + gchar *time1 = NULL; + gchar *size = NULL; + gchar *size1 = NULL; + + /* Nothing to display */ + //gtk_label_set_text(GTK_LABEL(VersionLabel),""); + //gtk_label_set_text(GTK_LABEL(VersionValueLabel),""); + gtk_label_set_text(GTK_LABEL(VersionLabel),_("Encoder:")); + gtk_label_set_text(GTK_LABEL(VersionValueLabel),"flac"); + + /* Bitrate */ + text = g_strdup_printf(_("%d kb/s"),ETFileInfo->bitrate); + gtk_label_set_text(GTK_LABEL(BitrateValueLabel),text); + g_free(text); + + /* Samplerate */ + text = g_strdup_printf(_("%d Hz"),ETFileInfo->samplerate); + gtk_label_set_text(GTK_LABEL(SampleRateValueLabel),text); + g_free(text); + + /* Mode */ + gtk_label_set_text(GTK_LABEL(ModeLabel),_("Channels:")); + text = g_strdup_printf("%d",ETFileInfo->mode); + gtk_label_set_text(GTK_LABEL(ModeValueLabel),text); + g_free(text); + + /* Size */ + size = Convert_Size(ETFileInfo->size); + size1 = Convert_Size(ETCore->ETFileDisplayedList_TotalSize); + text = g_strdup_printf("%s (%s)",size,size1); + gtk_label_set_text(GTK_LABEL(SizeValueLabel),text); + g_free(size); + g_free(size1); + g_free(text); + + /* Duration */ + time = Convert_Duration(ETFileInfo->duration); + time1 = Convert_Duration(ETCore->ETFileDisplayedList_TotalDuration); + text = g_strdup_printf("%s (%s)",time,time1); + gtk_label_set_text(GTK_LABEL(DurationValueLabel),text); + g_free(time); + g_free(time1); + g_free(text); + + return TRUE; +} + +#endif /* ENABLE_FLAC */ |