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Diffstat (limited to '')
-rw-r--r-- | src/pipe.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/pipe.c b/src/pipe.c deleted file mode 100644 index d8131432f..000000000 --- a/src/pipe.c +++ /dev/null @@ -1,194 +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. - */ - -#include "config.h" -#include "pipe.h" -#include "buffer.h" -#include "chunk.h" - -#include <glib.h> - -#include <assert.h> - -struct music_pipe { - /** the first chunk */ - struct music_chunk *head; - - /** a pointer to the tail of the chunk */ - struct music_chunk **tail_r; - - /** the current number of chunks */ - unsigned size; - - /** a mutex which protects #head and #tail_r */ - GMutex *mutex; - -#ifndef NDEBUG - struct audio_format audio_format; -#endif -}; - -struct music_pipe * -music_pipe_new(void) -{ - struct music_pipe *mp = g_new(struct music_pipe, 1); - - mp->head = NULL; - mp->tail_r = &mp->head; - mp->size = 0; - mp->mutex = g_mutex_new(); - -#ifndef NDEBUG - audio_format_clear(&mp->audio_format); -#endif - - return mp; -} - -void -music_pipe_free(struct music_pipe *mp) -{ - assert(mp->head == NULL); - assert(mp->tail_r == &mp->head); - - g_mutex_free(mp->mutex); - g_free(mp); -} - -#ifndef NDEBUG - -bool -music_pipe_check_format(const struct music_pipe *pipe, - const struct audio_format *audio_format) -{ - assert(pipe != NULL); - assert(audio_format != NULL); - - return !audio_format_defined(&pipe->audio_format) || - audio_format_equals(&pipe->audio_format, audio_format); -} - -bool -music_pipe_contains(const struct music_pipe *mp, - const struct music_chunk *chunk) -{ - g_mutex_lock(mp->mutex); - - for (const struct music_chunk *i = mp->head; - i != NULL; i = i->next) { - if (i == chunk) { - g_mutex_unlock(mp->mutex); - return true; - } - } - - g_mutex_unlock(mp->mutex); - - return false; -} - -#endif - -const struct music_chunk * -music_pipe_peek(const struct music_pipe *mp) -{ - return mp->head; -} - -struct music_chunk * -music_pipe_shift(struct music_pipe *mp) -{ - struct music_chunk *chunk; - - g_mutex_lock(mp->mutex); - - chunk = mp->head; - if (chunk != NULL) { - assert(!music_chunk_is_empty(chunk)); - - mp->head = chunk->next; - --mp->size; - - if (mp->head == NULL) { - assert(mp->size == 0); - assert(mp->tail_r == &chunk->next); - - mp->tail_r = &mp->head; - } else { - assert(mp->size > 0); - assert(mp->tail_r != &chunk->next); - } - -#ifndef NDEBUG - /* poison the "next" reference */ - chunk->next = (void*)0x01010101; - - if (mp->size == 0) - audio_format_clear(&mp->audio_format); -#endif - } - - g_mutex_unlock(mp->mutex); - - return chunk; -} - -void -music_pipe_clear(struct music_pipe *mp, struct music_buffer *buffer) -{ - struct music_chunk *chunk; - - while ((chunk = music_pipe_shift(mp)) != NULL) - music_buffer_return(buffer, chunk); -} - -void -music_pipe_push(struct music_pipe *mp, struct music_chunk *chunk) -{ - assert(!music_chunk_is_empty(chunk)); - assert(chunk->length == 0 || audio_format_valid(&chunk->audio_format)); - - g_mutex_lock(mp->mutex); - - assert(mp->size > 0 || !audio_format_defined(&mp->audio_format)); - assert(!audio_format_defined(&mp->audio_format) || - music_chunk_check_format(chunk, &mp->audio_format)); - -#ifndef NDEBUG - if (!audio_format_defined(&mp->audio_format) && chunk->length > 0) - mp->audio_format = chunk->audio_format; -#endif - - chunk->next = NULL; - *mp->tail_r = chunk; - mp->tail_r = &chunk->next; - - ++mp->size; - - g_mutex_unlock(mp->mutex); -} - -unsigned -music_pipe_size(const struct music_pipe *mp) -{ - g_mutex_lock(mp->mutex); - unsigned size = mp->size; - g_mutex_unlock(mp->mutex); - return size; -} |