/*****************************************************************************
* vout_pictures.c : picture management functions
*****************************************************************************
* Copyright (C) 2000-2004 the VideoLAN team
* $Id$
*
* Authors: Vincent Seguin <seguin@via.ecp.fr>
* Samuel Hocevar <sam@zoy.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.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "vlc_common.h"
#include "vlc_vout.h"
#include "vlc_osd.h"
#include "vlc_filter.h"
#include "vout_pictures.h"
#include <assert.h>
/**
* Display a picture
*
* Remove the reservation flag of a picture, which will cause it to be ready
* for display. The picture won't be displayed until vout_DatePicture has been
* called.
*/
void vout_DisplayPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
vlc_mutex_lock( &p_vout->picture_lock );
switch( p_pic->i_status )
{
case RESERVED_PICTURE:
p_pic->i_status = RESERVED_DISP_PICTURE;
break;
case RESERVED_DATED_PICTURE:
p_pic->i_status = READY_PICTURE;
break;
default:
msg_Err( p_vout, "picture to display %p has invalid status %d",
p_pic, p_pic->i_status );
break;
}
vlc_mutex_unlock( &p_vout->picture_lock );
}
/**
* Date a picture
*
* Remove the reservation flag of a picture, which will cause it to be ready
* for display. The picture won't be displayed until vout_DisplayPicture has
* been called.
* \param p_vout The vout in question
* \param p_pic The picture to date
* \param date The date to display the picture
*/
void vout_DatePicture( vout_thread_t *p_vout,
picture_t *p_pic, mtime_t date )
{
vlc_mutex_lock( &p_vout->picture_lock );
p_pic->date = date;
switch( p_pic->i_status )
{
case RESERVED_PICTURE:
p_pic->i_status = RESERVED_DATED_PICTURE;
break;
case RESERVED_DISP_PICTURE:
p_pic->i_status = READY_PICTURE;
break;
default:
msg_Err( p_vout, "picture to date %p has invalid status %d",
p_pic, p_pic->i_status );
break;
}
vlc_mutex_unlock( &p_vout->picture_lock );
}
/**
* Allocate a picture in the video output heap.
*
* This function creates a reserved image in the video output heap.
* A null pointer is returned if the function fails. This method provides an
* already allocated zone of memory in the picture data fields.
* It needs locking since several pictures can be created by several producers
* threads.
*/
int vout_CountPictureAvailable( vout_thread_t *p_vout )
{
int i_free = 0;
int i_pic;
vlc_mutex_lock( &p_vout->picture_lock );
for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
{
picture_t *p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1) % I_RENDERPICTURES];
switch( p_pic->i_status )
{
case DESTROYED_PICTURE:
i_free++;
break;
case FREE_PICTURE:
i_free++;
break;
default:
break;
}
}
vlc_mutex_unlock( &p_vout->picture_lock );
return i_free;
}
picture_t *vout_CreatePicture( vout_thread_t *p_vout,
bool b_progressive,
bool b_top_field_first,
unsigned int i_nb_fields )
{
int i_pic; /* picture index */
picture_t * p_pic;
picture_t * p_freepic = NULL; /* first free picture */
/* Get lock */
vlc_mutex_lock( &p_vout->picture_lock );
/*
* Look for an empty place in the picture heap.
*/
for( i_pic = 0; i_pic < I_RENDERPICTURES; i_pic++ )
{
p_pic = PP_RENDERPICTURE[(p_vout->render.i_last_used_pic + i_pic + 1)
% I_RENDERPICTURES];
switch( p_pic->i_status )
{
case DESTROYED_PICTURE:
/* Memory will not be reallocated, and function can end
* immediately - this is the best possible case, since no
* memory allocation needs to be done */
p_pic->i_status = RESERVED_PICTURE;
p_pic->i_refcount = 0;
p_pic->b_force = 0;
p_pic->b_progressive = b_progressive;
p_pic->i_nb_fields = i_nb_fields;
p_pic->b_top_field_first = b_top_field_first;
p_vout->i_heap_size++;
p_vout->render.i_last_used_pic =
( p_vout->render.i_last_used_pic + i_pic + 1 )
% I_RENDERPICTURES;
vlc_mutex_unlock( &p_vout->picture_lock );
return( p_pic );
case FREE_PICTURE:
/* Picture is empty and ready for allocation */
p_vout->render.i_last_used_pic =
( p_vout->render.i_last_used_pic + i_pic + 1 )
% I_RENDERPICTURES;
p_freepic = p_pic;
break;
default:
break;
}
}
/*
* Prepare picture
*/
if( p_freepic != NULL )
{
vout_AllocatePicture( VLC_OBJECT(p_vout),
p_freepic, p_vout->render.i_chroma,
p_vout->render.i_width, p_vout->render.i_height,
p_vout->render.i_aspect );
if( p_freepic->i_planes )
{
/* Copy picture information, set some default values */
p_freepic->i_status = RESERVED_PICTURE;
p_freepic->i_type = MEMORY_PICTURE;
p_freepic->b_slow = 0;
p_freepic->i_refcount = 0;
p_freepic->b_force = 0;
p_freepic->b_progressive = b_progressive;
p_freepic->i_nb_fields = i_nb_fields;
p_freepic->b_top_field_first = b_top_field_first;
p_freepic->i_matrix_coefficients = 1;
p_vout->i_heap_size++;
}
else
{
/* Memory allocation failed : set picture as empty */
p_freepic->i_status = FREE_PICTURE;
p_freepic = NULL;
msg_Err( p_vout, "picture allocation failed" );
}
vlc_mutex_unlock( &p_vout->picture_lock );
return( p_freepic );
}
/* No free or destroyed picture could be found, but the decoder
* will try again in a while. */
vlc_mutex_unlock( &p_vout->picture_lock );
return( NULL );
}
/**
* Remove a permanent or reserved picture from the heap
*
* This function frees a previously reserved picture or a permanent
* picture. It is meant to be used when the construction of a picture aborted.
* Note that the picture will be destroyed even if it is linked !
*/
void vout_DestroyPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
vlc_mutex_lock( &p_vout->picture_lock );
#ifndef NDEBUG
/* Check if picture status is valid */
if( (p_pic->i_status != RESERVED_PICTURE) &&
(p_pic->i_status != RESERVED_DATED_PICTURE) &&
(p_pic->i_status != RESERVED_DISP_PICTURE) )
{
msg_Err( p_vout, "picture to destroy %p has invalid status %d",
p_pic, p_pic->i_status );
}
#endif
p_pic->i_status = DESTROYED_PICTURE;
p_vout->i_heap_size--;
vlc_mutex_unlock( &p_vout->picture_lock );
}
/**
* Increment reference counter of a picture
*
* This function increments the reference counter of a picture in the video
* heap. It needs a lock since several producer threads can access the picture.
*/
void vout_LinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
vlc_mutex_lock( &p_vout->picture_lock );
p_pic->i_refcount++;
vlc_mutex_unlock( &p_vout->picture_lock );
}
/**
* Decrement reference counter of a picture
*
* This function decrement the reference counter of a picture in the video heap
*/
void vout_UnlinkPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
vlc_mutex_lock( &p_vout->picture_lock );
p_pic->i_refcount--;
if( ( p_pic->i_refcount == 0 ) &&
( p_pic->i_status == DISPLAYED_PICTURE ) )
{
p_pic->i_status = DESTROYED_PICTURE;
p_vout->i_heap_size--;
}
vlc_mutex_unlock( &p_vout->picture_lock );
}
/**
* Render a picture
*
* This function chooses whether the current picture needs to be copied
* before rendering, does the subpicture magic, and tells the video output
* thread which direct buffer needs to be displayed.
*/
picture_t * vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
subpicture_t *p_subpic )
{
int i_scale_width, i_scale_height;
if( p_pic == NULL )
{
/* XXX: subtitles */
return NULL;
}
i_scale_width = p_vout->fmt_out.i_visible_width * 1000 /
p_vout->fmt_in.i_visible_width;
i_scale_height = p_vout->fmt_out.i_visible_height * 1000 /
p_vout->fmt_in.i_visible_height;
if( p_pic->i_type == DIRECT_PICTURE )
{
if( !p_vout->render.b_allow_modify_pics || p_pic->i_refcount ||
p_pic->b_force )
{
/* Picture is in a direct buffer and is still in use,
* we need to copy it to another direct buffer before
* displaying it if there are subtitles. */
if( p_subpic != NULL )
{
/* We have subtitles. First copy the picture to
* the spare direct buffer, then render the
* subtitles. */
vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
PP_OUTPUTPICTURE[0], p_pic, p_subpic,
i_scale_width, i_scale_height );
return PP_OUTPUTPICTURE[0];
}
/* No subtitles, picture is in a directbuffer so
* we can display it directly even if it is still
* in use. */
return p_pic;
}
/* Picture is in a direct buffer but isn't used by the
* decoder. We can safely render subtitles on it and
* display it. */
spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_pic, p_pic,
p_subpic, i_scale_width, i_scale_height );
return p_pic;
}
/* Not a direct buffer. We either need to copy it to a direct buffer,
* or render it if the chroma isn't the same. */
if( p_vout->b_direct )
{
/* Picture is not in a direct buffer, but is exactly the
* same size as the direct buffers. A memcpy() is enough,
* then render the subtitles. */
if( PP_OUTPUTPICTURE[0]->pf_lock )
if( PP_OUTPUTPICTURE[0]->pf_lock( p_vout, PP_OUTPUTPICTURE[0] ) )
return NULL;
vout_CopyPicture( p_vout, PP_OUTPUTPICTURE[0], p_pic );
spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
PP_OUTPUTPICTURE[0], p_pic,
p_subpic, i_scale_width, i_scale_height );
if( PP_OUTPUTPICTURE[0]->pf_unlock )
PP_OUTPUTPICTURE[0]->pf_unlock( p_vout, PP_OUTPUTPICTURE[0] );
return PP_OUTPUTPICTURE[0];
}
/* Picture is not in a direct buffer, and needs to be converted to
* another size/chroma. Then the subtitles need to be rendered as
* well. This usually means software YUV, or hardware YUV with a
* different chroma. */
if( p_subpic != NULL && p_vout->p_picture[0].b_slow )
{
/* The picture buffer is in slow memory. We'll use
* the "2 * VOUT_MAX_PICTURES + 1" picture as a temporary
* one for subpictures rendering. */
picture_t *p_tmp_pic = &p_vout->p_picture[2 * VOUT_MAX_PICTURES];
if( p_tmp_pic->i_status == FREE_PICTURE )
{
vout_AllocatePicture( VLC_OBJECT(p_vout),
p_tmp_pic, p_vout->fmt_out.i_chroma,
p_vout->fmt_out.i_width,
p_vout->fmt_out.i_height,
p_vout->fmt_out.i_aspect );
p_tmp_pic->i_type = MEMORY_PICTURE;
p_tmp_pic->i_status = RESERVED_PICTURE;
/* some modules (such as blend) needs to know the extra information in picture heap */
p_tmp_pic->p_heap = &p_vout->output;
}
/* Convert image to the first direct buffer */
p_vout->p_chroma->p_owner = (filter_owner_sys_t *)p_tmp_pic;
p_vout->p_chroma->pf_video_filter( p_vout->p_chroma, p_pic );
/* Render subpictures on the first direct buffer */
spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out, p_tmp_pic,
p_tmp_pic, p_subpic,
i_scale_width, i_scale_height );
if( p_vout->p_picture[0].pf_lock )
if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
return NULL;
vout_CopyPicture( p_vout, &p_vout->p_picture[0], p_tmp_pic );
}
else
{
if( p_vout->p_picture[0].pf_lock )
if( p_vout->p_picture[0].pf_lock( p_vout, &p_vout->p_picture[0] ) )
return NULL;
/* Convert image to the first direct buffer */
p_vout->p_chroma->p_owner = (filter_owner_sys_t *)&p_vout->p_picture[0];
p_vout->p_chroma->pf_video_filter( p_vout->p_chroma, p_pic );
/* Render subpictures on the first direct buffer */
spu_RenderSubpictures( p_vout->p_spu, &p_vout->fmt_out,
&p_vout->p_picture[0], &p_vout->p_picture[0],
p_subpic, i_scale_width, i_scale_height );
}
if( p_vout->p_picture[0].pf_unlock )
p_vout->p_picture[0].pf_unlock( p_vout, &p_vout->p_picture[0] );
return &p_vout->p_picture[0];
}
/**
* Calculate image window coordinates
*
* This function will be accessed by plugins. It calculates the relative
* position of the output window and the image window.
*/
void vout_PlacePicture( vout_thread_t *p_vout,
unsigned int i_width, unsigned int i_height,
unsigned int *pi_x, unsigned int *pi_y,
unsigned int *pi_width, unsigned int *pi_height )
{
if( (i_width <= 0) || (i_height <=0) )
{
*pi_width = *pi_height = *pi_x = *pi_y = 0;
return;
}
if( p_vout->b_scale )
{
*pi_width = i_width;
*pi_height = i_height;
}
else
{
*pi_width = __MIN( i_width, p_vout->fmt_in.i_visible_width );
*pi_height = __MIN( i_height, p_vout->fmt_in.i_visible_height );
}
if( p_vout->fmt_in.i_visible_width * (int64_t)p_vout->fmt_in.i_sar_num *
*pi_height / p_vout->fmt_in.i_visible_height /
p_vout->fmt_in.i_sar_den > *pi_width )
{
*pi_height = p_vout->fmt_in.i_visible_height *
(int64_t)p_vout->fmt_in.i_sar_den * *pi_width /
p_vout->fmt_in.i_visible_width / p_vout->fmt_in.i_sar_num;
}
else
{
*pi_width = p_vout->fmt_in.i_visible_width *
(int64_t)p_vout->fmt_in.i_sar_num * *pi_height /
p_vout->fmt_in.i_visible_height / p_vout->fmt_in.i_sar_den;
}
switch( p_vout->i_alignment & VOUT_ALIGN_HMASK )
{
case VOUT_ALIGN_LEFT:
*pi_x = 0;
break;
case VOUT_ALIGN_RIGHT:
*pi_x = i_width - *pi_width;
break;
default:
*pi_x = ( i_width - *pi_width ) / 2;
}
switch( p_vout->i_alignment & VOUT_ALIGN_VMASK )
{
case VOUT_ALIGN_TOP:
*pi_y = 0;
break;
case VOUT_ALIGN_BOTTOM:
*pi_y = i_height - *pi_height;
break;
default:
*pi_y = ( i_height - *pi_height ) / 2;
}
}
/**
* Allocate a new picture in the heap.
*
* This function allocates a fake direct buffer in memory, which can be
* used exactly like a video buffer. The video output thread then manages
* how it gets displayed.
*/
int __vout_AllocatePicture( vlc_object_t *p_this, picture_t *p_pic,
vlc_fourcc_t i_chroma,
int i_width, int i_height, int i_aspect )
{
int i_bytes, i_index, i_width_aligned, i_height_aligned;
/* Make sure the real dimensions are a multiple of 16 */
i_width_aligned = (i_width + 15) >> 4 << 4;
i_height_aligned = (i_height + 15) >> 4 << 4;
if( vout_InitPicture( p_this, p_pic, i_chroma,
i_width, i_height, i_aspect ) != VLC_SUCCESS )
{
p_pic->i_planes = 0;
return VLC_EGENERIC;
}
/* Calculate how big the new image should be */
i_bytes = p_pic->format.i_bits_per_pixel *
i_width_aligned * i_height_aligned / 8;
p_pic->p_data = vlc_memalign( &p_pic->p_data_orig, 16, i_bytes );
if( p_pic->p_data == NULL )
{
p_pic->i_planes = 0;
return VLC_EGENERIC;
}
/* Fill the p_pixels field for each plane */
p_pic->p[ 0 ].p_pixels = p_pic->p_data;
for( i_index = 1; i_index < p_pic->i_planes; i_index++ )
{
p_pic->p[i_index].p_pixels = p_pic->p[i_index-1].p_pixels +
p_pic->p[i_index-1].i_lines * p_pic->p[i_index-1].i_pitch;
}
return VLC_SUCCESS;
}
/**
* Initialise the video format fields given chroma/size.
*
* This function initializes all the video_frame_format_t fields given the
* static properties of a picture (chroma and size).
* \param p_format Pointer to the format structure to initialize
* \param i_chroma Chroma to set
* \param i_width Width to set
* \param i_height Height to set
* \param i_aspect Aspect ratio
*/
void vout_InitFormat( video_frame_format_t *p_format, vlc_fourcc_t i_chroma,
int i_width, int i_height, int i_aspect )
{
p_format->i_chroma = i_chroma;
p_format->i_width = p_format->i_visible_width = i_width;
p_format->i_height = p_format->i_visible_height = i_height;
p_format->i_x_offset = p_format->i_y_offset = 0;
p_format->i_aspect = i_aspect;
#if 0
/* Assume we have square pixels */
if( i_width && i_height )
p_format->i_aspect = i_width * VOUT_ASPECT_FACTOR / i_height;
else
p_format->i_aspect = 0;
#endif
switch( i_chroma )
{
case FOURCC_YUVA:
p_format->i_bits_per_pixel = 32;
break;
case FOURCC_I444:
case FOURCC_J444:
p_format->i_bits_per_pixel = 24;
break;
case FOURCC_I422:
case FOURCC_YUY2:
case FOURCC_UYVY:
case FOURCC_J422:
p_format->i_bits_per_pixel = 16;
break;
case FOURCC_I440:
case FOURCC_J440:
p_format->i_bits_per_pixel = 16;
break;
case FOURCC_I411:
case FOURCC_YV12:
case FOURCC_I420:
case FOURCC_J420:
case FOURCC_IYUV:
p_format->i_bits_per_pixel = 12;
break;
case FOURCC_I410:
case FOURCC_YVU9:
p_format->i_bits_per_pixel = 9;
break;
case FOURCC_Y211:
p_format->i_bits_per_pixel = 8;
break;
case FOURCC_YUVP:
p_format->i_bits_per_pixel = 8;
break;
case FOURCC_RV32:
case FOURCC_RGBA:
p_format->i_bits_per_pixel = 32;
break;
case FOURCC_RV24:
p_format->i_bits_per_pixel = 24;
break;
case FOURCC_RV15:
case FOURCC_RV16:
p_format->i_bits_per_pixel = 16;
break;
case FOURCC_RGB2:
p_format->i_bits_per_pixel = 8;
break;
case FOURCC_GREY:
case FOURCC_Y800:
case FOURCC_Y8:
p_format->i_bits_per_pixel = 8;
break;
default:
p_format->i_bits_per_pixel = 0;
break;
}
}
/**
* Initialise the picture_t fields given chroma/size.
*
* This function initializes most of the picture_t fields given a chroma and
* size. It makes the assumption that stride == width.
* \param p_this The calling object
* \param p_pic Pointer to the picture to initialize
* \param i_chroma The chroma fourcc to set
* \param i_width The width of the picture
* \param i_height The height of the picture
* \param i_aspect The aspect ratio of the picture
*/
int __vout_InitPicture( vlc_object_t *p_this, picture_t *p_pic,
vlc_fourcc_t i_chroma,
int i_width, int i_height, int i_aspect )
{
int i_index, i_width_aligned, i_height_aligned;
/* Store default values */
for( i_index = 0; i_index < VOUT_MAX_PLANES; i_index++ )
{
p_pic->p[i_index].p_pixels = NULL;
p_pic->p[i_index].i_pixel_pitch = 1;
}
p_pic->pf_release = 0;
p_pic->pf_lock = 0;
p_pic->pf_unlock = 0;
p_pic->i_refcount = 0;
vout_InitFormat( &p_pic->format, i_chroma, i_width, i_height, i_aspect );
/* Make sure the real dimensions are a multiple of 16 */
i_width_aligned = (i_width + 15) >> 4 << 4;
i_height_aligned = (i_height + 15) >> 4 << 4;
/* Calculate coordinates */
switch( i_chroma )
{
case FOURCC_I411:
p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
p_pic->p[ U_PLANE ].i_visible_lines = i_height;
p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
p_pic->p[ V_PLANE ].i_visible_lines = i_height;
p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
p_pic->i_planes = 3;
break;
case FOURCC_I410:
case FOURCC_YVU9:
p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 4;
p_pic->p[ U_PLANE ].i_visible_lines = i_height / 4;
p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 4;
p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 4;
p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 4;
p_pic->p[ V_PLANE ].i_visible_lines = i_height / 4;
p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 4;
p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 4;
p_pic->i_planes = 3;
break;
case FOURCC_YV12:
case FOURCC_I420:
case FOURCC_IYUV:
case FOURCC_J420:
p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
p_pic->i_planes = 3;
break;
case FOURCC_I422:
case FOURCC_J422:
p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
p_pic->p[ U_PLANE ].i_visible_lines = i_height;
p_pic->p[ U_PLANE ].i_pitch = i_width_aligned / 2;
p_pic->p[ U_PLANE ].i_visible_pitch = i_width / 2;
p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
p_pic->p[ V_PLANE ].i_visible_lines = i_height;
p_pic->p[ V_PLANE ].i_pitch = i_width_aligned / 2;
p_pic->p[ V_PLANE ].i_visible_pitch = i_width / 2;
p_pic->i_planes = 3;
break;
case FOURCC_I440:
case FOURCC_J440:
p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
p_pic->p[ U_PLANE ].i_lines = i_height_aligned / 2;
p_pic->p[ U_PLANE ].i_visible_lines = i_height / 2;
p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
p_pic->p[ V_PLANE ].i_lines = i_height_aligned / 2;
p_pic->p[ V_PLANE ].i_visible_lines = i_height / 2;
p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
p_pic->i_planes = 3;
break;
case FOURCC_I444:
case FOURCC_J444:
p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
p_pic->p[ U_PLANE ].i_visible_lines = i_height;
p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
p_pic->p[ V_PLANE ].i_visible_lines = i_height;
p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
p_pic->i_planes = 3;
break;
case FOURCC_YUVA:
p_pic->p[ Y_PLANE ].i_lines = i_height_aligned;
p_pic->p[ Y_PLANE ].i_visible_lines = i_height;
p_pic->p[ Y_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ Y_PLANE ].i_visible_pitch = i_width;
p_pic->p[ U_PLANE ].i_lines = i_height_aligned;
p_pic->p[ U_PLANE ].i_visible_lines = i_height;
p_pic->p[ U_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ U_PLANE ].i_visible_pitch = i_width;
p_pic->p[ V_PLANE ].i_lines = i_height_aligned;
p_pic->p[ V_PLANE ].i_visible_lines = i_height;
p_pic->p[ V_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ V_PLANE ].i_visible_pitch = i_width;
p_pic->p[ A_PLANE ].i_lines = i_height_aligned;
p_pic->p[ A_PLANE ].i_visible_lines = i_height;
p_pic->p[ A_PLANE ].i_pitch = i_width_aligned;
p_pic->p[ A_PLANE ].i_visible_pitch = i_width;
p_pic->i_planes = 4;
break;
case FOURCC_YUVP:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned;
p_pic->p->i_visible_pitch = i_width;
p_pic->p->i_pixel_pitch = 8;
p_pic->i_planes = 1;
break;
case FOURCC_Y211:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned;
p_pic->p->i_visible_pitch = i_width;
p_pic->p->i_pixel_pitch = 4;
p_pic->i_planes = 1;
break;
case FOURCC_UYVY:
case FOURCC_YUY2:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned * 2;
p_pic->p->i_visible_pitch = i_width * 2;
p_pic->p->i_pixel_pitch = 4;
p_pic->i_planes = 1;
break;
case FOURCC_RGB2:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned;
p_pic->p->i_visible_pitch = i_width;
p_pic->p->i_pixel_pitch = 1;
p_pic->i_planes = 1;
break;
case FOURCC_RV15:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned * 2;
p_pic->p->i_visible_pitch = i_width * 2;
p_pic->p->i_pixel_pitch = 2;
p_pic->i_planes = 1;
break;
case FOURCC_RV16:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned * 2;
p_pic->p->i_visible_pitch = i_width * 2;
p_pic->p->i_pixel_pitch = 2;
p_pic->i_planes = 1;
break;
case FOURCC_RV24:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned * 3;
p_pic->p->i_visible_pitch = i_width * 3;
p_pic->p->i_pixel_pitch = 3;
p_pic->i_planes = 1;
break;
case FOURCC_RV32:
case FOURCC_RGBA:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned * 4;
p_pic->p->i_visible_pitch = i_width * 4;
p_pic->p->i_pixel_pitch = 4;
p_pic->i_planes = 1;
break;
case FOURCC_GREY:
case FOURCC_Y800:
case FOURCC_Y8:
p_pic->p->i_lines = i_height_aligned;
p_pic->p->i_visible_lines = i_height;
p_pic->p->i_pitch = i_width_aligned;
p_pic->p->i_visible_pitch = i_width;
p_pic->p->i_pixel_pitch = 1;
p_pic->i_planes = 1;
break;
default:
if( p_this )
msg_Err( p_this, "unknown chroma type 0x%.8x (%4.4s)",
i_chroma, (char*)&i_chroma );
p_pic->i_planes = 0;
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/**
* Compare two chroma values
*
* This function returns 1 if the two fourcc values given as argument are
* the same format (eg. UYVY/UYNV) or almost the same format (eg. I420/YV12)
*/
int vout_ChromaCmp( vlc_fourcc_t i_chroma, vlc_fourcc_t 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;
}
case FOURCC_GREY:
case FOURCC_Y800:
case FOURCC_Y8:
switch( i_amorhc )
{
case FOURCC_GREY:
case FOURCC_Y800:
case FOURCC_Y8:
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 (hence i_visible_pitch), height, and chroma.
*****************************************************************************/
void __vout_CopyPicture( vlc_object_t *p_this,
picture_t *p_dest, picture_t *p_src )
{
VLC_UNUSED(p_this);
picture_Copy( p_dest, p_src );
}
/*****************************************************************************
*
*****************************************************************************/
static void PictureReleaseCallback( picture_t *p_picture )
{
if( --p_picture->i_refcount > 0 )
return;
picture_Delete( p_picture );
}
/*****************************************************************************
*
*****************************************************************************/
picture_t *picture_New( vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect )
{
picture_t *p_picture = malloc( sizeof(*p_picture) );
if( !p_picture )
return NULL;
memset( p_picture, 0, sizeof(*p_picture) );
if( __vout_AllocatePicture( NULL, p_picture,
i_chroma, i_width, i_height, i_aspect ) )
{
free( p_picture );
return NULL;
}
p_picture->i_refcount = 1;
p_picture->pf_release = PictureReleaseCallback;
p_picture->i_status = RESERVED_PICTURE;
return p_picture;
}
/*****************************************************************************
*
*****************************************************************************/
void picture_Delete( picture_t *p_picture )
{
assert( p_picture && p_picture->i_refcount == 0 );
free( p_picture->p_data_orig );
free( p_picture->p_sys );
free( p_picture );
}
/*****************************************************************************
*
*****************************************************************************/
void picture_CopyPixels( picture_t *p_dst, const picture_t *p_src )
{
int i;
for( i = 0; i < p_src->i_planes ; i++ )
plane_CopyPixels( p_dst->p+i, p_src->p+i );
}
void plane_CopyPixels( plane_t *p_dst, const plane_t *p_src )
{
const unsigned i_width = __MIN( p_dst->i_visible_pitch,
p_src->i_visible_pitch );
const unsigned i_height = __MIN( p_dst->i_visible_lines,
p_src->i_visible_lines );
if( p_src->i_pitch == p_dst->i_pitch )
{
/* There are margins, but with the same width : perfect ! */
vlc_memcpy( p_dst->p_pixels, p_src->p_pixels,
p_src->i_pitch * i_height );
}
else
{
/* We need to proceed line by line */
uint8_t *p_in = p_src->p_pixels;
uint8_t *p_out = p_dst->p_pixels;
int i_line;
assert( p_in );
assert( p_out );
for( i_line = i_height; i_line--; )
{
vlc_memcpy( p_out, p_in, i_width );
p_in += p_src->i_pitch;
p_out += p_dst->i_pitch;
}
}
}
/*****************************************************************************
*
*****************************************************************************/
