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Diffstat (limited to '')
| -rw-r--r-- | src/chunk.h | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/src/chunk.h b/src/chunk.h deleted file mode 100644 index a06a203eb..000000000 --- a/src/chunk.h +++ /dev/null @@ -1,151 +0,0 @@ -/* - * Copyright (C) 2003-2011 The Music Player Daemon Project - * http://www.musicpd.org - * - * 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., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef MPD_CHUNK_H -#define MPD_CHUNK_H - -#include "replay_gain_info.h" - -#ifndef NDEBUG -#include "audio_format.h" -#endif - -#include <stdbool.h> -#include <stdint.h> -#include <stddef.h> - -enum { - CHUNK_SIZE = 4096, -}; - -struct audio_format; - -/** - * A chunk of music data. Its format is defined by the - * music_pipe_append() caller. - */ -struct music_chunk { - /** the next chunk in a linked list */ - struct music_chunk *next; - - /** - * An optional chunk which should be mixed into this chunk. - * This is used for cross-fading. - */ - struct music_chunk *other; - - /** - * The current mix ratio for cross-fading: 1.0 means play 100% - * of this chunk, 0.0 means play 100% of the "other" chunk. - */ - float mix_ratio; - - /** number of bytes stored in this chunk */ - uint16_t length; - - /** current bit rate of the source file */ - uint16_t bit_rate; - - /** the time stamp within the song */ - float times; - - /** - * An optional tag associated with this chunk (and the - * following chunks); appears at song boundaries. The tag - * object is owned by this chunk, and must be freed when this - * chunk is deinitialized in music_chunk_free() - */ - struct tag *tag; - - /** - * Replay gain information associated with this chunk. - * Only valid if the serial is not 0. - */ - struct replay_gain_info replay_gain_info; - - /** - * A serial number for checking if replay gain info has - * changed since the last chunk. The magic value 0 indicates - * that there is no replay gain info available. - */ - unsigned replay_gain_serial; - - /** the data (probably PCM) */ - char data[CHUNK_SIZE]; - -#ifndef NDEBUG - struct audio_format audio_format; -#endif -}; - -void -music_chunk_init(struct music_chunk *chunk); - -void -music_chunk_free(struct music_chunk *chunk); - -static inline bool -music_chunk_is_empty(const struct music_chunk *chunk) -{ - return chunk->length == 0 && chunk->tag == NULL; -} - -#ifndef NDEBUG -/** - * Checks if the audio format if the chunk is equal to the specified - * audio_format. - */ -bool -music_chunk_check_format(const struct music_chunk *chunk, - const struct audio_format *audio_format); -#endif - -/** - * Prepares appending to the music chunk. Returns a buffer where you - * may write into. After you are finished, call music_chunk_expand(). - * - * @param chunk the music_chunk object - * @param audio_format the audio format for the appended data; must - * stay the same for the life cycle of this chunk - * @param data_time the time within the song - * @param bit_rate the current bit rate of the source file - * @param max_length_r the maximum write length is returned here - * @return a writable buffer, or NULL if the chunk is full - */ -void * -music_chunk_write(struct music_chunk *chunk, - const struct audio_format *audio_format, - float data_time, uint16_t bit_rate, - size_t *max_length_r); - -/** - * Increases the length of the chunk after the caller has written to - * the buffer returned by music_chunk_write(). - * - * @param chunk the music_chunk object - * @param audio_format the audio format for the appended data; must - * stay the same for the life cycle of this chunk - * @param length the number of bytes which were appended - * @return true if the chunk is full - */ -bool -music_chunk_expand(struct music_chunk *chunk, - const struct audio_format *audio_format, size_t length); - -#endif |