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121 lines
6.7 KiB
121 lines
6.7 KiB
/*******************************************************************************
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* video.h: common video definitions
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* (c)1999 VideoLAN
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*******************************************************************************
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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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* 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_height; /* picture height */
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int i_chroma_width; /* chroma width */
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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 /* picture is free and not allocated */
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#define RESERVED_PICTURE 1 /* picture is allocated and reserved */
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#define RESERVED_DATED_PICTURE 2 /* picture is waiting for DisplayPicture */
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#define RESERVED_DISP_PICTURE 3 /* picture is waiting for a DatePixture */
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#define READY_PICTURE 4 /* picture is ready for display */
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#define DISPLAYED_PICTURE 5 /* picture has been displayed but is linked */
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#define DESTROYED_PICTURE 6 /* picture is 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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* spu_t: video sub picture unit
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*******************************************************************************
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* Any sub picture unit 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 spu_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; /* spu type */
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int i_status; /* spu flags */
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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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/* Sub picture unit data - data can always be freely modified. p_data itself
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* (the pointer) should NEVER be modified. */
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void * p_data; /* spu data */
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} spu_t;
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/* SPU types */
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#define EMPTY_SPU 0 /* subtitle slot is empty and available */
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#define RLE_SPU 100 /* RLE encoded subtitle */
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/* Subpicture status */
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#define FREE_SPU 0 /* subtitle is free and not allocated */
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#define RESERVED_SPU 1 /* subtitle is allocated and reserved */
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#define READY_SPU 2 /* subtitle is ready for display */
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#define DESTROYED_SPU 3 /* subtitle is allocated but no more used */
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