picture_t *picture_NewFromResource( const video_format_t *p_fmt, const picture_resource_t *p_resource )
{
video_format_t fmt = *p_fmt;
/* It is needed to be sure all information are filled */
video_format_Setup( &fmt, p_fmt->i_chroma,
p_fmt->i_width, p_fmt->i_height,
p_fmt->i_sar_num, p_fmt->i_sar_den );
if( p_fmt->i_x_offset < p_fmt->i_width &&
p_fmt->i_y_offset < p_fmt->i_height &&
p_fmt->i_visible_width > 0 && p_fmt->i_x_offset + p_fmt->i_visible_width <= p_fmt->i_width &&
p_fmt->i_visible_height > 0 && p_fmt->i_y_offset + p_fmt->i_visible_height <= p_fmt->i_height )
video_format_CopyCrop( &fmt, p_fmt );
/* */
picture_t *p_picture = calloc( 1, sizeof(*p_picture) );
if( !p_picture )
return NULL;
if( p_resource )
{
if( picture_Setup( p_picture, fmt.i_chroma, fmt.i_width, fmt.i_height,
fmt.i_sar_num, fmt.i_sar_den ) )
{
free( p_picture );
return NULL;
}
p_picture->p_sys = p_resource->p_sys;
for( int i = 0; i < p_picture->i_planes; i++ )
{
p_picture->p[i].p_pixels = p_resource->p[i].p_pixels;
p_picture->p[i].i_lines = p_resource->p[i].i_lines;
p_picture->p[i].i_pitch = p_resource->p[i].i_pitch;
}
}
else
{
if( vout_AllocatePicture( p_picture,
fmt.i_chroma, fmt.i_width, fmt.i_height,
fmt.i_sar_num, fmt.i_sar_den ) )
{
free( p_picture );
return NULL;
}
}
/* */
p_picture->format = fmt;
p_picture->i_refcount = 1;
p_picture->pf_release = PictureReleaseCallback;
return p_picture;
}
/*****************************************************************************
* Init: initialize video thread
*****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
int i_index;
picture_t *p_pic;
/* Initialize the output structure */
p_vout->output.i_chroma = p_vout->render.i_chroma;
p_vout->output.pf_setpalette = NULL;
p_vout->output.i_width = p_vout->render.i_width;
p_vout->output.i_height = p_vout->render.i_height;
p_vout->output.i_aspect = p_vout->output.i_width
* VOUT_ASPECT_FACTOR / p_vout->output.i_height;
p_vout->output.i_rmask = 0xff0000;
p_vout->output.i_gmask = 0x00ff00;
p_vout->output.i_bmask = 0x0000ff;
/* Try to initialize 1 direct buffer */
p_pic = NULL;
/* Find an empty picture slot */
for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
{
if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
{
p_pic = p_vout->p_picture + i_index;
break;
}
}
/* Allocate the picture */
if( p_pic == NULL )
{
return VLC_EGENERIC;
}
vout_AllocatePicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
p_vout->output.i_width, p_vout->output.i_height,
p_vout->output.i_aspect );
if( p_pic->i_planes == 0 )
{
return VLC_EGENERIC;
}
p_pic->i_status = DESTROYED_PICTURE;
p_pic->i_type = DIRECT_PICTURE;
PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
I_OUTPUTPICTURES++;
return VLC_SUCCESS;
}
/*****************************************************************************
* LoadPNG: loads the PNG logo into memory
*****************************************************************************/
static picture_t *LoadPNG( vlc_object_t *p_this )
{
picture_t *p_pic;
char *psz_filename;
vlc_value_t val;
FILE *file;
int i, j, i_trans;
vlc_bool_t b_alpha = VLC_TRUE;
png_uint_32 i_width, i_height;
int i_color_type, i_interlace_type, i_compression_type, i_filter_type;
int i_bit_depth;
png_bytep *p_row_pointers;
png_structp p_png;
png_infop p_info, p_end_info;
var_Create( p_this, "logo-file", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
var_Get( p_this, "logo-file", &val );
psz_filename = val.psz_string;
if( !psz_filename || !*psz_filename )
{
msg_Err( p_this, "logo file not specified" );
return 0;
}
if( !(file = fopen( psz_filename , "rb" )) )
{
msg_Err( p_this, "logo file (%s) not found", psz_filename );
free( psz_filename );
return 0;
}
free( psz_filename );
p_png = png_create_read_struct( PNG_LIBPNG_VER_STRING, 0, 0, 0 );
p_info = png_create_info_struct( p_png );
p_end_info = png_create_info_struct( p_png );
png_init_io( p_png, file );
png_read_info( p_png, p_info );
png_get_IHDR( p_png, p_info, &i_width, &i_height,
&i_bit_depth, &i_color_type, &i_interlace_type,
&i_compression_type, &i_filter_type);
if( i_color_type == PNG_COLOR_TYPE_PALETTE )
png_set_palette_to_rgb( p_png );
if( i_color_type == PNG_COLOR_TYPE_GRAY ||
i_color_type == PNG_COLOR_TYPE_GRAY_ALPHA )
png_set_gray_to_rgb( p_png );
if( png_get_valid( p_png, p_info, PNG_INFO_tRNS ) )
{
png_set_tRNS_to_alpha( p_png );
}
else if( !(i_color_type & PNG_COLOR_MASK_ALPHA) )
{
b_alpha = VLC_FALSE;
}
p_row_pointers = malloc( sizeof(png_bytep) * i_height );
for( i = 0; i < (int)i_height; i++ )
p_row_pointers[i] = malloc( 4 * ( i_bit_depth + 7 ) / 8 * i_width );
png_read_image( p_png, p_row_pointers );
png_read_end( p_png, p_end_info );
fclose( file );
png_destroy_read_struct( &p_png, &p_info, &p_end_info );
/* Convert to YUVA */
p_pic = malloc( sizeof(picture_t) );
if( vout_AllocatePicture( p_this, p_pic, VLC_FOURCC('Y','U','V','A'),
i_width, i_height, VOUT_ASPECT_FACTOR ) !=
VLC_SUCCESS )
{
for( i = 0; i < (int)i_height; i++ ) free( p_row_pointers[i] );
free( p_row_pointers );
return 0;
}
var_Create(p_this, "logo-transparency", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT);
var_Get( p_this, "logo-transparency", &val );
i_trans = __MAX( __MIN( val.i_int, 255 ), 0 );
for( j = 0; j < (int)i_height ; j++ )
{
uint8_t *p = (uint8_t *)p_row_pointers[j];
for( i = 0; i < (int)i_width ; i++ )
{
int i_offset = i + j * p_pic->p[Y_PLANE].i_pitch;
p_pic->p[Y_PLANE].p_pixels[i_offset] =
(p[0] * 257L + p[1] * 504 + p[2] * 98)/1000 + 16;
p_pic->p[U_PLANE].p_pixels[i_offset] =
(p[2] * 439L - p[0] * 148 - p[1] * 291)/1000 + 128;
p_pic->p[V_PLANE].p_pixels[i_offset] =
(p[0] * 439L - p[1] * 368 - p[2] * 71)/1000 + 128;
p_pic->p[A_PLANE].p_pixels[i_offset] =
b_alpha ? (p[3] * i_trans) / 255 : i_trans;
p += (b_alpha ? 4 : 3);
}
}
for( i = 0; i < (int)i_height; i++ ) free( p_row_pointers[i] );
free( p_row_pointers );
return p_pic;
}
/*****************************************************************************
* Init: initialize video thread
*****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
int i_index;
picture_t *p_pic;
vlc_value_t val;
char* psz_chroma;
int i_chroma;
int i_width;
int i_height;
int i_datasize;
i_width = config_GetInt( p_vout, "snapshot-width" );
i_height = config_GetInt( p_vout, "snapshot-height" );
psz_chroma = config_GetPsz( p_vout, "snapshot-chroma" );
if( psz_chroma )
{
if( strlen( psz_chroma ) < 4 )
{
msg_Err( p_vout, "snapshot-chroma should be 4 characters long" );
return VLC_EGENERIC;
}
i_chroma = VLC_FOURCC( psz_chroma[0], psz_chroma[1],
psz_chroma[2], psz_chroma[3] );
free( psz_chroma );
}
else
{
msg_Err( p_vout, "Cannot find chroma information." );
return VLC_EGENERIC;
}
I_OUTPUTPICTURES = 0;
/* Initialize the output structure */
p_vout->output.i_chroma = i_chroma;
p_vout->output.pf_setpalette = NULL;
p_vout->output.i_width = i_width;
p_vout->output.i_height = i_height;
p_vout->output.i_aspect = p_vout->output.i_width
* VOUT_ASPECT_FACTOR / p_vout->output.i_height;
/* Define the bitmasks */
switch( i_chroma )
{
case VLC_FOURCC( 'R','V','1','5' ):
p_vout->output.i_rmask = 0x001f;
p_vout->output.i_gmask = 0x03e0;
p_vout->output.i_bmask = 0x7c00;
break;
case VLC_FOURCC( 'R','V','1','6' ):
p_vout->output.i_rmask = 0x001f;
p_vout->output.i_gmask = 0x07e0;
p_vout->output.i_bmask = 0xf800;
break;
case VLC_FOURCC( 'R','V','2','4' ):
p_vout->output.i_rmask = 0xff0000;
p_vout->output.i_gmask = 0x00ff00;
p_vout->output.i_bmask = 0x0000ff;
break;
case VLC_FOURCC( 'R','V','3','2' ):
p_vout->output.i_rmask = 0xff0000;
p_vout->output.i_gmask = 0x00ff00;
p_vout->output.i_bmask = 0x0000ff;
break;
}
/* Try to initialize 1 direct buffer */
p_pic = NULL;
/* Find an empty picture slot */
for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
{
if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
{
p_pic = p_vout->p_picture + i_index;
break;
}
}
/* Allocate the picture */
if( p_pic == NULL )
{
return VLC_SUCCESS;
}
vout_AllocatePicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
p_vout->output.i_width, p_vout->output.i_height,
p_vout->output.i_aspect );
if( p_pic->i_planes == 0 )
{
return VLC_EGENERIC;
}
p_pic->i_status = DESTROYED_PICTURE;
p_pic->i_type = DIRECT_PICTURE;
PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
I_OUTPUTPICTURES++;
/* Get datasize and set variables */
i_datasize = i_width * i_height * p_pic->p->i_pixel_pitch;
p_vout->p_sys->i_datasize = i_datasize;
p_vout->p_sys->i_index = 0;
p_vout->p_sys->i_size = config_GetInt( p_vout, "snapshot-cache-size" );
if( p_vout->p_sys->i_size < 2 )
{
msg_Err( p_vout, "snapshot-cache-size must be at least 1." );
return VLC_EGENERIC;
}
p_vout->p_sys->p_list = malloc( p_vout->p_sys->i_size * sizeof( snapshot_t * ) );
if( p_vout->p_sys->p_list == NULL )
return VLC_ENOMEM;
/* Initialize the structures for the circular buffer */
for( i_index = 0; i_index < p_vout->p_sys->i_size; i_index++ )
{
snapshot_t *p_snapshot = malloc( sizeof( snapshot_t ) );
if( p_snapshot == NULL )
return VLC_ENOMEM;
p_snapshot->i_width = i_width;
p_snapshot->i_height = i_height;
p_snapshot->i_datasize = i_datasize;
p_snapshot->date = 0;
p_snapshot->p_data = ( char* ) malloc( i_datasize );
if( p_snapshot->p_data == NULL )
return VLC_ENOMEM;
p_vout->p_sys->p_list[i_index] = p_snapshot;
}
val.i_int = i_width;
var_Set( p_vout, "snapshot-width", val );
val.i_int = i_height;
var_Set( p_vout, "snapshot-height", val );
val.i_int = i_datasize;
var_Set( p_vout, "snapshot-datasize", val );
val.i_int = p_vout->p_sys->i_size;
var_Set( p_vout, "snapshot-cache-size", val );
val.p_address = p_vout->p_sys->p_list;
var_Set( p_vout, "snapshot-list-pointer", val );
/* Get the p_input pointer (to access video times) */
p_vout->p_sys->p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT,
FIND_PARENT );
if( !p_vout->p_sys->p_input )
return VLC_ENOOBJ;
if( var_Create( p_vout->p_sys->p_input, "snapshot-id", VLC_VAR_INTEGER ) )
{
msg_Err( p_vout, "Cannot create snapshot-id variable in p_input (%d).",
p_vout->p_sys->p_input->i_object_id );
return VLC_EGENERIC;
}
/* Register the snapshot vout module at the input level */
val.i_int = p_vout->i_object_id;
if( var_Set( p_vout->p_sys->p_input, "snapshot-id", val ) )
{
msg_Err( p_vout, "Cannot register snapshot-id in p_input (%d).",
p_vout->p_sys->p_input->i_object_id );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Init: initialize dummy video thread output method
*****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
int i_index, i_chroma;
char *psz_chroma;
picture_t *p_pic;
vlc_bool_t b_chroma = 0;
psz_chroma = config_GetPsz( p_vout, "dummy-chroma" );
if( psz_chroma )
{
if( strlen( psz_chroma ) >= 4 )
{
i_chroma = VLC_FOURCC( psz_chroma[0], psz_chroma[1],
psz_chroma[2], psz_chroma[3] );
b_chroma = 1;
}
free( psz_chroma );
}
I_OUTPUTPICTURES = 0;
/* Initialize the output structure */
if( b_chroma )
{
msg_Dbg( p_vout, "forcing chroma 0x%.8x (%4.4s)",
i_chroma, (char*)&i_chroma );
p_vout->output.i_chroma = i_chroma;
if ( i_chroma == VLC_FOURCC( 'R', 'G', 'B', '2' ) )
{
p_vout->output.pf_setpalette = SetPalette;
}
p_vout->output.i_width = p_vout->render.i_width;
p_vout->output.i_height = p_vout->render.i_height;
p_vout->output.i_aspect = p_vout->render.i_aspect;
}
else
{
/* Use same chroma as input */
p_vout->output.i_chroma = p_vout->render.i_chroma;
p_vout->output.i_rmask = p_vout->render.i_rmask;
p_vout->output.i_gmask = p_vout->render.i_gmask;
p_vout->output.i_bmask = p_vout->render.i_bmask;
p_vout->output.i_width = p_vout->render.i_width;
p_vout->output.i_height = p_vout->render.i_height;
p_vout->output.i_aspect = p_vout->render.i_aspect;
}
/* Try to initialize DUMMY_MAX_DIRECTBUFFERS direct buffers */
while( I_OUTPUTPICTURES < DUMMY_MAX_DIRECTBUFFERS )
{
p_pic = NULL;
/* Find an empty picture slot */
for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
{
if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
{
p_pic = p_vout->p_picture + i_index;
break;
}
}
/* Allocate the picture */
if( p_pic == NULL )
{
break;
}
vout_AllocatePicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
p_vout->output.i_width, p_vout->output.i_height,
p_vout->output.i_aspect );
if( p_pic->i_planes == 0 )
{
break;
}
p_pic->i_status = DESTROYED_PICTURE;
p_pic->i_type = DIRECT_PICTURE;
PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
I_OUTPUTPICTURES++;
}
return( 0 );
}
