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vlc/include/video.h
Sam Hocevar 4c8afc762f * ./plugins/chroma/i420_rgb8.c: plain C 8 bpp transformation. 
* ./plugins/chroma/i420_rgb16.c: plain C 24/32 bpp transformations.
  * ./plugins/ggi/ggi.c: support for 8 bpp displays.
  * ./plugins/sdl/vout_sdl.c: support for 8 bpp displays.
  * ./plugins/x11/xcommon.c: support for 8 bpp displays.
  * ./src/video_output/video_output.c: fixed a segfault.
2002-03-17 17:00:38 +00:00

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/*****************************************************************************
* video.h: common video definitions
* This header is required by all modules which have to handle pictures. It
* includes all common video types and constants.
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: video.h,v 1.47 2002/03/17 17:00:38 sam Exp $
*
* Authors: Vincent Seguin <seguin@via.ecp.fr>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* plane_t: description of a planar graphic field
*****************************************************************************/
typedef struct plane_s
{
u8 *p_pixels; /* Start of the plane's data */
/* Variables used for fast memcpy operations */
int i_lines; /* Number of lines */
int i_pitch; /* Number of bytes in a line, including margins */
/* Size of a macropixel, defaults to 1 */
int i_pixel_bytes;
/* Is there a margin ? defaults to no */
boolean_t b_margin;
/* Variables used for pictures with margins */
int i_visible_bytes; /* How many real pixels are there ? */
boolean_t b_hidden; /* Are we allowed to write to the margin ? */
} plane_t;
/*****************************************************************************
* picture_t: video picture
*****************************************************************************
* Any picture destined to be displayed by a video output thread should be
* stored in this structure from it's creation to it's effective display.
* Picture type and flags should only be modified by the output thread. Note
* that an empty picture MUST have its flags set to 0.
*****************************************************************************/
typedef struct picture_s
{
/* Picture data - data can always be freely modified, but p_data may
* NEVER be modified. A direct buffer can be handled as the plugin
* wishes, it can even swap p_pixels buffers. */
u8 *p_data;
plane_t p[ VOUT_MAX_PLANES ]; /* description of the planes */
int i_planes; /* number of allocated planes */
/* Type and flags - should NOT be modified except by the vout thread */
int i_status; /* picture flags */
int i_type; /* is picture a direct buffer ? */
int i_matrix_coefficients; /* in YUV type, encoding type */
/* Picture management properties - these properties can be modified using
* the video output thread API, but should never be written directly */
int i_refcount; /* link reference counter */
mtime_t date; /* display date */
/* Picture dynamic properties - those properties can be changed by the
* decoder */
boolean_t b_progressive; /* is it a progressive frame ? */
boolean_t b_repeat_first_field; /* RFF bit */
boolean_t b_top_field_first; /* which field is first */
/* The picture heap we are attached to */
struct picture_heap_s* p_heap;
/* Private data - the video output plugin might want to put stuff here to
* keep track of the picture */
struct picture_sys_s *p_sys;
} picture_t;
/*****************************************************************************
* picture_heap_t: video picture heap, either render (to store pictures used
* by the decoder) or output (to store pictures displayed by the vout plugin)
*****************************************************************************/
typedef struct picture_heap_s
{
int i_pictures; /* current heap size */
/* Picture static properties - those properties are fixed at initialization
* and should NOT be modified */
int i_width; /* picture width */
int i_height; /* picture height */
u32 i_chroma; /* picture chroma */
int i_aspect; /* aspect ratio */
/* Real pictures */
picture_t* pp_picture[VOUT_MAX_PICTURES]; /* pictures */
/* Stuff used for truecolor RGB planes */
int i_rmask, i_rrshift, i_lrshift;
int i_gmask, i_rgshift, i_lgshift;
int i_bmask, i_rbshift, i_lbshift;
/* Stuff used for palettized RGB planes */
void (* pf_setpalette) ( struct vout_thread_s *, u16 *, u16 *, u16 * );
} picture_heap_t;
/* RGB2PIXEL: assemble RGB components to a pixel value, returns a u32 */
#define RGB2PIXEL( p_vout, i_r, i_g, i_b ) \
(((((u32)i_r) >> p_vout->output.i_rrshift) << p_vout->output.i_lrshift) | \
((((u32)i_g) >> p_vout->output.i_rgshift) << p_vout->output.i_lgshift) | \
((((u32)i_b) >> p_vout->output.i_rbshift) << p_vout->output.i_lbshift))
/*****************************************************************************
* Flags used to describe the status of a picture
*****************************************************************************/
/* Picture type */
#define EMPTY_PICTURE 0 /* empty buffer */
#define MEMORY_PICTURE 100 /* heap-allocated buffer */
#define DIRECT_PICTURE 200 /* direct buffer */
/* Picture status */
#define FREE_PICTURE 0 /* free and not allocated */
#define RESERVED_PICTURE 1 /* allocated and reserved */
#define RESERVED_DATED_PICTURE 2 /* waiting for DisplayPicture */
#define RESERVED_DISP_PICTURE 3 /* waiting for a DatePicture */
#define READY_PICTURE 4 /* ready for display */
#define DISPLAYED_PICTURE 5 /* been displayed but is linked */
#define DESTROYED_PICTURE 6 /* allocated but no more used */
/*****************************************************************************
* Flags used to describe picture format - see http://www.webartz.com/fourcc/
*****************************************************************************/
/* Packed RGB formats */
#define FOURCC_BI_RGB 0x00000000 /* RGB for 8bpp */
#define FOURCC_RGB2 0x32424752 /* alias for BI_RGB */
#define FOURCC_BI_BITFIELDS 0x00000003 /* RGB, for 16, 24, 32bpp */
#define FOURCC_RV15 0x35315652 /* RGB 15bpp, 0x1f, 0x7e0, 0xf800 */
#define FOURCC_RV16 0x36315652 /* RGB 16bpp, 0x1f, 0x3e0, 0x7c00 */
#define FOURCC_RV24 0x34325652 /* RGB 24bpp, 0xff, 0xff00, 0xff0000 */
#define FOURCC_RV32 0x32335652 /* RGB 32bpp, 0xff, 0xff00, 0xff0000 */
/* Planar YUV formats */
#define FOURCC_I420 0x30323449 /* Planar 4:2:0, Y:U:V */
#define FOURCC_IYUV 0x56555949 /* alias for I420 */
#define FOURCC_YV12 0x32315659 /* Planar 4:2:0, Y:V:U */
/* Packed YUV formats */
#define FOURCC_IUYV 0x56595549 /* Packed 4:2:2, U:Y:V:Y, interlaced */
#define FOURCC_UYVY 0x59565955 /* Packed 4:2:2, U:Y:V:Y */
#define FOURCC_UYNV 0x564e5955 /* alias for UYVY */
#define FOURCC_Y422 0x32323459 /* alias for UYVY */
#define FOURCC_cyuv 0x76757963 /* Packed 4:2:2, U:Y:V:Y, reverted */
#define FOURCC_YUY2 0x32595559 /* Packed 4:2:2, Y:U:Y:V */
#define FOURCC_YUNV 0x564e5559 /* alias for YUY2 */
#define FOURCC_YVYU 0x55585659 /* Packed 4:2:2, Y:V:Y:U */
#define FOURCC_Y211 0x31313259 /* Packed 2:1:1, Y:U:Y:V */
/* Custom formats which we use but which don't exist in the fourcc database */
#define FOURCC_YMGA 0x41474d59 /* Planar Y, packed UV, from Matrox */
#define FOURCC_I422 0x32323449 /* Planar 4:2:2, Y:U:V */
#define FOURCC_I444 0x34343449 /* Planar 4:4:4, Y:U:V */
/* Plane indices */
#define Y_PLANE 0
#define U_PLANE 1
#define V_PLANE 2
/* Shortcuts */
#define Y_PIXELS p[Y_PLANE].p_pixels
#define U_PIXELS p[U_PLANE].p_pixels
#define V_PIXELS p[V_PLANE].p_pixels
static __inline__ int vout_ChromaCmp( u32 i_chroma, u32 i_amorhc )
{
/* If they are the same, they are the same ! */
if( i_chroma == i_amorhc )
{
return 1;
}
/* Check for equivalence classes */
switch( i_chroma )
{
case FOURCC_I420:
case FOURCC_IYUV:
case FOURCC_YV12:
switch( i_amorhc )
{
case FOURCC_I420:
case FOURCC_IYUV:
case FOURCC_YV12:
return 1;
default:
return 0;
}
case FOURCC_UYVY:
case FOURCC_UYNV:
case FOURCC_Y422:
switch( i_amorhc )
{
case FOURCC_UYVY:
case FOURCC_UYNV:
case FOURCC_Y422:
return 1;
default:
return 0;
}
case FOURCC_YUY2:
case FOURCC_YUNV:
switch( i_amorhc )
{
case FOURCC_YUY2:
case FOURCC_YUNV:
return 1;
default:
return 0;
}
default:
return 0;
}
}
/*****************************************************************************
* vout_CopyPicture: copy a picture to another one
*****************************************************************************
* This function takes advantage of the image format, and reduces the
* number of calls to memcpy() to the minimum. Source and destination
* images must have same width, height, and chroma.
*****************************************************************************/
static __inline__ void vout_CopyPicture( picture_t *p_src, picture_t *p_dest )
{
int i;
for( i = 0; i < p_src->i_planes ; i++ )
{
if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
{
if( p_src->p[i].b_margin )
{
/* If p_src->b_margin is set, p_dest->b_margin must be set */
if( p_dest->p[i].b_hidden )
{
/* There are margins, but they are hidden : perfect ! */
FAST_MEMCPY( p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
p_src->p[i].i_pitch * p_src->p[i].i_lines );
continue;
}
else
{
/* We can't directly copy the margin. Too bad. */
}
}
else
{
/* Same pitch, no margins : perfect ! */
FAST_MEMCPY( p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
p_src->p[i].i_pitch * p_src->p[i].i_lines );
continue;
}
}
else
{
/* Pitch values are different */
}
/* We need to proceed line by line */
{
u8 *p_in = p_src->p[i].p_pixels, *p_out = p_dest->p[i].p_pixels;
int i_line;
for( i_line = p_src->p[i].i_lines; i_line--; )
{
FAST_MEMCPY( p_out, p_in, p_src->p[i].i_visible_bytes );
p_in += p_src->p[i].i_pitch;
p_out += p_dest->p[i].i_pitch;
}
}
}
}
/*****************************************************************************
* subpicture_t: video subtitle
*****************************************************************************
* Any subtitle destined to be displayed by a video output thread should
* be stored in this structure from it's creation to it's effective display.
* Subtitle type and flags should only be modified by the output thread. Note
* that an empty subtitle MUST have its flags set to 0.
*****************************************************************************/
typedef struct subpicture_s
{
/* Type and flags - should NOT be modified except by the vout thread */
int i_type; /* type */
int i_status; /* flags */
int i_size; /* data size */
struct subpicture_s * p_next; /* next subtitle to be displayed */
/* Date properties */
mtime_t i_start; /* beginning of display date */
mtime_t i_stop; /* end of display date */
boolean_t b_ephemer; /* does the subtitle have a TTL ? */
/* Display properties - these properties are only indicative and may be
* changed by the video output thread, or simply ignored depending of the
* subtitle type. */
int i_x; /* offset from alignment position */
int i_y; /* offset from alignment position */
int i_width; /* picture width */
int i_height; /* picture height */
#if 0
/* Additionnal properties depending of the subpicture type */
union
{
/* Text subpictures properties - text is stored in data area, in ASCIIZ
* format */
struct
{
p_vout_font_t p_font; /* font, NULL for default */
int i_style; /* text style */
u32 i_char_color; /* character color */
u32 i_border_color; /* border color */
u32 i_bg_color; /* background color */
} text;
} type;
#endif
/* The subpicture rendering routine */
void ( *pf_render ) ( const struct vout_thread_s *, picture_t *,
const struct subpicture_s * );
/* Private data - the subtitle plugin might want to put stuff here to
* keep track of the subpicture */
struct subpicture_sys_s *p_sys; /* subpicture data */
} subpicture_t;
/* Subpicture type */
#define EMPTY_SUBPICTURE 0 /* subtitle slot is empty and available */
#define MEMORY_SUBPICTURE 100 /* subpicture stored in memory */
/* Subpicture status */
#define FREE_SUBPICTURE 0 /* free and not allocated */
#define RESERVED_SUBPICTURE 1 /* allocated and reserved */
#define READY_SUBPICTURE 2 /* ready for display */
#define DESTROYED_SUBPICTURE 3 /* allocated but not used anymore */
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