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Diffstat (limited to 'src/xine-engine/buffer.h')
| -rw-r--r-- | src/xine-engine/buffer.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/xine-engine/buffer.h b/src/xine-engine/buffer.h new file mode 100644 index 000000000..a57d219ba --- /dev/null +++ b/src/xine-engine/buffer.h @@ -0,0 +1,147 @@ +/* + * Copyright (C) 2000-2001 the xine project + * + * This file is part of xine, a unix video player. + * + * xine 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. + * + * xine 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 + * + * $Id: buffer.h,v 1.1 2001/04/18 22:36:05 f1rmb Exp $ + * + * + * contents: + * + * buffer_entry structure - serves as a transport encapsulation + * of the mpeg audio/video data through xine + * + * free buffer pool management routines + * + * FIFO buffer structures/routines + * + */ + +#ifndef HAVE_BUFFER_H +#define HAVE_BUFFER_H + +#include <stdio.h> +#include <pthread.h> +#include <inttypes.h> + +/* + * buffer types + * + * a buffer type ID describes the contents of a buffer + * it consists of three fields: + * + * buf_type = 0xMMDDCCCC + * + * MM : major buffer type (CONTROL, VIDEO, AUDIO, SPU) + * DD : decoder selection (e.g. MPEG, OPENDIVX ... for VIDEO) + * CCCC : channel number or other subtype information for the decoder + */ + +#define BUF_MAJOR_MASK 0xFF000000 +#define BUF_DECODER_MASK 0x00FF0000 + +/* control buffer types */ + +#define BUF_CONTROL_BASE 0x01000000 +#define BUF_CONTROL_START 0x01000000 +#define BUF_CONTROL_END 0x01000001 +#define BUF_CONTROL_QUIT 0x01000002 + +/* video buffer types: */ + +#define BUF_VIDEO_BASE 0x02000000 +#define BUF_VIDEO_MPEG 0x02000000 +#define BUF_VIDEO_OPENDIVX 0x02010000 +#define BUF_VIDEO_QUICKTIME 0x02020000 +#define BUF_VIDEO_AVI 0x02030000 + +/* audio buffer types: */ + +#define BUF_AUDIO_BASE 0x03000000 +#define BUF_AUDIO_AC3 0x03000000 +#define BUF_AUDIO_MPEG 0x03010000 +#define BUF_AUDIO_LPCM 0x03020000 +#define BUF_AUDIO_AVI 0x03030000 + +/* spu buffer types: */ + +#define BUF_SPU_BASE 0x04000000 +#define BUF_SPU_CLUT 0x04000000 +#define BUF_SPU_PACKAGE 0x04010000 + + +typedef struct buf_element_s buf_element_t; +struct buf_element_s { + buf_element_t *next; + + unsigned char *mem; + unsigned char *content; /* start of raw content in pMem (without header etc) */ + + uint32_t size ; /* size of _content_ */ + uint32_t max_size; + uint32_t type; + uint32_t PTS, DTS; + off_t input_pos; /* remember where this buf came from in the input source */ + int frame_end; /* avi */ + + void (*free_buffer) (buf_element_t *buf); + +} ; + +typedef struct fifo_buffer_s fifo_buffer_t; +struct fifo_buffer_s +{ + buf_element_t *first, *last; + + pthread_mutex_t mutex; + pthread_cond_t not_empty; + + /* + * functions to access this fifo: + */ + + void (*put) (fifo_buffer_t *fifo, buf_element_t *buf); + + buf_element_t *(*get) (fifo_buffer_t *fifo); + + void (*clear) (fifo_buffer_t *fifo) ; + + /* + * alloc buffer for this fifo from global buf pool + * you don't have to use this function to allocate a buffer, + * an input plugin can decide to implement it's own + * buffer allocation functions + */ + + buf_element_t *(*buffer_pool_alloc) (void); + +} ; + +/* + * allocate and initialize new (empty) fifo buffer + */ + +fifo_buffer_t *fifo_buffer_new (void); + +/* + * init global buffer pool, + * allocate nNumBuffers of buf_size bytes each + */ + +void buffer_pool_init (int num_buffers, uint32_t buf_size); + +#endif |