static int read_video( lsmash_handler_t *h, int sample_number, void *buf )
{
avs_handler_t *hp = (avs_handler_t *)h->video_private;
int buf_linesize = MAKE_AVIUTL_PITCH( hp->vi->width * avs_bits_per_pixel( hp->vi ) );
AVS_VideoFrame *frame = hp->func.avs_get_frame( hp->clip, sample_number );
if( hp->func.avs_clip_get_error( hp->clip ) )
return 0;
hp->func.avs_bit_blt( hp->env, buf, buf_linesize, avs_get_read_ptr( frame ),
avs_get_pitch( frame ), avs_get_row_size( frame ), hp->vi->height );
hp->func.avs_release_video_frame( frame );
return avs_bmp_size( hp->vi );
}
static int read_video( lsmash_handler_t *h, int sample_number, void *buf )
{
avs_handler_t *hp = (avs_handler_t *)h->video_private;
AVS_VideoFrame *as_frame = hp->func.avs_get_frame( hp->clip, sample_number );
if( hp->func.avs_clip_get_error( hp->clip ) )
return 0;
if( avs_is_interleaved( hp->vi ) )
{
uint8_t *read_ptr = (uint8_t *)avs_get_read_ptr( as_frame );
int pitch = avs_get_pitch( as_frame );
if( avs_is_rgb( hp->vi ) )
{
hp->av_frame->data [0] = read_ptr + pitch * (hp->vi->height - 1);
hp->av_frame->linesize[0] = -pitch;
}
else
{
hp->av_frame->data [0] = read_ptr;
hp->av_frame->linesize[0] = pitch;
}
}
else
for( int i = 0; i < 3; i++ )
{
static const int as_plane[3] = { AVS_PLANAR_Y, AVS_PLANAR_U, AVS_PLANAR_V };
hp->av_frame->data [i] = (uint8_t *)avs_get_read_ptr_p( as_frame, as_plane[i] );
hp->av_frame->linesize[i] = avs_get_pitch_p( as_frame, as_plane[i] );
}
hp->av_frame->width = hp->vi->width;
hp->av_frame->height = hp->vi->height;
hp->av_frame->format = as_to_av_input_pixel_format( hp->vi->pixel_type, hp->bit_depth, &hp->av_frame->width );
hp->av_frame->color_range = AVCOL_RANGE_UNSPECIFIED;
hp->av_frame->colorspace = AVCOL_SPC_UNSPECIFIED;
/* Here, update_scaler_configuration_if_needed() is required to activate the scaler. */
if( update_scaler_configuration_if_needed( &hp->voh.scaler, NULL, hp->av_frame ) < 0 )
return 0;
int frame_size = convert_colorspace( &hp->voh, hp->av_frame, buf );
hp->func.avs_release_video_frame( as_frame );
return frame_size;
}