mirror of
https://code.videolan.org/videolan/vlc
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4f551c2bf0
* Fixes to aout_darwin.c by Colin Delacroix <colin@zoy.org>.
* Fixes to configure.in, Makefile.in and main.c (Altivec detection)
by Eugenio Jarosiewicz <ej0@cise.ufl.edu>.
* Added Colin and Eugenio to the AUTHORS file.
192 lines
10 KiB
C
192 lines
10 KiB
C
/*****************************************************************************
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* video.h: common video definitions
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* This header is required by all modules which have to handle pictures. It
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* includes all common video types and constants.
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*****************************************************************************
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* Copyright (C) 1999, 2000 VideoLAN
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* $Id: video.h,v 1.29 2001/03/21 13:42:33 sam Exp $
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*
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* Authors: Vincent Seguin <seguin@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Requires:
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* "config.h"
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* "common.h"
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* "mtime.h"
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*****************************************************************************/
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/*****************************************************************************
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* yuv_data_t: type for storing one Y, U or V sample.
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*****************************************************************************/
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typedef u8 yuv_data_t;
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/*****************************************************************************
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* picture_t: video picture
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*****************************************************************************
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* Any picture destined to be displayed by a video output thread should be
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* stored in this structure from it's creation to it's effective display.
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* Picture type and flags should only be modified by the output thread. Note
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* that an empty picture MUST have its flags set to 0.
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*****************************************************************************/
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typedef struct picture_s
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{
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/* Type and flags - should NOT be modified except by the vout thread */
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int i_type; /* picture type */
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int i_status; /* picture flags */
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int i_matrix_coefficients; /* in YUV type, encoding type */
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/* Picture management properties - these properties can be modified using
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* the video output thread API, but should ne be written directly */
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int i_refcount; /* link reference counter */
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mtime_t date; /* display date */
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/* Picture static properties - those properties are fixed at initialization
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* and should NOT be modified */
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int i_width; /* picture width */
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int i_chroma_width; /* chroma width */
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int i_height; /* picture height */
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int i_size; /* number of pels */
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int i_chroma_size; /* number of chroma pels */
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/* Picture dynamic properties - those properties can be changed by the
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* decoder */
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int i_display_horizontal_offset; /* ISO/IEC 13818-2 6.3.12 */
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int i_display_vertical_offset; /* ISO/IEC 13818-2 6.3.12 */
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int i_display_width; /* useful picture width */
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int i_display_height; /* useful picture height */
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int i_aspect_ratio; /* aspect ratio */
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/* Macroblock counter - the decoder use it to verify if it has
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* decoded all the macroblocks of the picture */
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int i_deccount;
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vlc_mutex_t lock_deccount;
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/* Picture data - data can always be freely modified. p_data itself
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* (the pointer) should NEVER be modified. In YUV format, the p_y, p_u and
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* p_v data pointers refers to different areas of p_data, and should not
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* be freed */
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void * p_data; /* picture data */
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yuv_data_t * p_y; /* pointer to beginning of Y image in p_data */
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yuv_data_t * p_u; /* pointer to beginning of U image in p_data */
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yuv_data_t * p_v; /* pointer to beginning of V image in p_data */
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} picture_t;
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/* Pictures types */
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#define EMPTY_PICTURE 0 /* picture slot is empty and available */
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#define YUV_420_PICTURE 100 /* 4:2:0 YUV picture */
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#define YUV_422_PICTURE 101 /* 4:2:2 YUV picture */
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#define YUV_444_PICTURE 102 /* 4:4:4 YUV picture */
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/* Pictures status */
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#define FREE_PICTURE 0 /* free and not allocated */
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#define RESERVED_PICTURE 1 /* allocated and reserved */
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#define RESERVED_DATED_PICTURE 2 /* waiting for DisplayPicture */
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#define RESERVED_DISP_PICTURE 3 /* waiting for a DatePicture */
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#define READY_PICTURE 4 /* ready for display */
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#define DISPLAYED_PICTURE 5 /* been displayed but is linked */
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#define DESTROYED_PICTURE 6 /* allocated but no more used */
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/* Aspect ratios (ISO/IEC 13818-2 section 6.3.3, table 6-3) */
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#define AR_SQUARE_PICTURE 1 /* square pixels */
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#define AR_3_4_PICTURE 2 /* 3:4 picture (TV) */
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#define AR_16_9_PICTURE 3 /* 16:9 picture (wide screen) */
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#define AR_221_1_PICTURE 4 /* 2.21:1 picture (movie) */
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/*****************************************************************************
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* subpicture_t: video subtitle
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*****************************************************************************
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* Any subtitle destined to be displayed by a video output thread should
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* be stored in this structure from it's creation to it's effective display.
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* Subtitle type and flags should only be modified by the output thread. Note
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* that an empty subtitle MUST have its flags set to 0.
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*****************************************************************************/
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typedef struct subpicture_s
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{
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/* Type and flags - should NOT be modified except by the vout thread */
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int i_type; /* type */
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int i_status; /* flags */
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int i_size; /* data size */
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struct subpicture_s * p_next; /* next subtitle to be displayed */
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/* Other properties */
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mtime_t begin_date; /* beginning of display date */
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mtime_t end_date; /* end of display date */
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/* Display properties - these properties are only indicative and may be
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* changed by the video output thread, or simply ignored depending of the
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* subtitle type. */
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int i_x; /* offset from alignment position */
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int i_y; /* offset from alignment position */
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int i_width; /* picture width */
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int i_height; /* picture height */
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int i_horizontal_align; /* horizontal alignment */
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int i_vertical_align; /* vertical alignment */
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/* Additionnal properties depending of the subpicture type */
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union
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{
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/* Text subpictures properties - text is stored in data area, in ASCIIZ
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* format */
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struct
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{
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p_vout_font_t p_font; /* font, NULL for default */
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int i_style; /* text style */
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u32 i_char_color; /* character color */
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u32 i_border_color; /* border color */
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u32 i_bg_color; /* background color */
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} text;
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/* DVD subpicture units properties */
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struct
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{
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int i_offset[2]; /* byte offsets to data */
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} spu;
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} type;
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/* Subpicture data, format depends of type - data can always be freely
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* modified. p_data itself (the pointer) should NEVER be modified. */
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void * p_data; /* subpicture data */
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} subpicture_t;
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/* Subpicture type */
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#define EMPTY_SUBPICTURE 0 /* subtitle slot is empty and available */
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#define DVD_SUBPICTURE 100 /* DVD subpicture unit */
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#define TEXT_SUBPICTURE 200 /* single line text */
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/* Subpicture status */
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#define FREE_SUBPICTURE 0 /* free and not allocated */
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#define RESERVED_SUBPICTURE 1 /* allocated and reserved */
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#define READY_SUBPICTURE 2 /* ready for display */
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#define DESTROYED_SUBPICTURE 3 /* allocated but not used anymore */
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/* Alignment types */
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#define RIGHT_ALIGN 10 /* x is absolute for right */
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#define LEFT_ALIGN 11 /* x is absolute for left */
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#define RIGHT_RALIGN 12 /* x is relative for right from right */
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#define LEFT_RALIGN 13 /* x is relative for left from left */
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#define CENTER_ALIGN 20 /* x, y are absolute for center */
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#define CENTER_RALIGN 21 /* x,y are relative for center from center */
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#define BOTTOM_ALIGN 30 /* y is absolute for bottom */
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#define TOP_ALIGN 31 /* y is absolute for top */
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#define BOTTOM_RALIGN 32 /* y is relative for bottom from bottom */
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#define TOP_RALIGN 33 /* y is relative for top from top */
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#define SUBTITLE_RALIGN 34 /* y is relative for center from subtitle */
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