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/* GStreamer Sub-Picture Unit - VobSub/DVD handling
* Copyright (C) 2009 Jan Schmidt <>
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* Library General Public License for more details.
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
#ifndef __GSTSPU_VOBSUB_H__
#define __GSTSPU_VOBSUB_H__
#include "gstspu-common.h"
typedef struct SpuVobsubState SpuVobsubState;
typedef struct SpuVobsubPixCtrlI SpuVobsubPixCtrlI;
typedef struct SpuVobsubLineCtrlI SpuVobsubLineCtrlI;
/* Pixel Control Info from a Change Color Contrast command */
struct SpuVobsubPixCtrlI {
gint16 left;
guint32 palette;
/* Pre-multiplied palette values, updated as
* needed */
SpuColour pal_cache[4];
struct SpuVobsubLineCtrlI {
guint8 n_changes; /* 1 to 8 */
SpuVobsubPixCtrlI pix_ctrl_i[8];
gint16 top;
gint16 bottom;
struct SpuVobsubState {
GstClockTime base_ts; /* base TS for cmd blk delays in running time */
GstBuffer *buf; /* Current SPU packet we're executing commands from */
guint16 cur_cmd_blk; /* Offset into the buf for the current cmd block */
/* Top + Bottom field offsets in the buffer. 0 = not set */
guint16 pix_data[2];
GstBuffer *pix_buf; /* Current SPU packet the pix_data references */
SpuRect disp_rect;
SpuRect clip_rect;
SpuRect hl_rect;
guint32 current_clut[16]; /* Colour lookup table from incoming events */
guint8 main_idx[4]; /* Indices for current main palette */
guint8 main_alpha[4]; /* Alpha values for main palette */
guint8 hl_idx[4]; /* Indices for current highlight palette */
guint8 hl_alpha[4]; /* Alpha values for highlight palette */
/* Pre-multiplied colour palette for the main palette */
SpuColour main_pal[4];
gboolean main_pal_dirty;
/* Line control info for rendering the highlight palette */
SpuVobsubLineCtrlI hl_ctrl_i;
gboolean hl_pal_dirty; /* Indicates that the HL palette info needs refreshing */
/* LineCtrlI Info from a Change Color & Contrast command */
SpuVobsubLineCtrlI *line_ctrl_i;
gint16 n_line_ctrl_i;
gboolean line_ctrl_i_pal_dirty; /* Indicates that the palettes for the line_ctrl_i
* need recalculating */
/* Rendering state vars below */
gint16 comp_last_x[2]; /* Maximum X values we rendered into the comp buffer (odd & even) */
gint16 *comp_last_x_ptr; /* Ptr to the current comp_last_x value to be updated by the render */
/* Current Y Position */
gint16 cur_Y;
/* Current offset in nibbles into the pix_data */
guint16 cur_offsets[2];
guint16 max_offset;
/* current ChgColCon Line Info */
SpuVobsubLineCtrlI *cur_chg_col;
SpuVobsubLineCtrlI *cur_chg_col_end;
/* Output position tracking */
guint8 *out_Y;
guint32 *out_U;
guint32 *out_V;
guint32 *out_A;
void gstspu_vobsub_handle_new_buf (GstDVDSpu * dvdspu, GstClockTime event_ts, GstBuffer *buf);
gboolean gstspu_vobsub_execute_event (GstDVDSpu *dvdspu);
void gstspu_vobsub_render (GstDVDSpu *dvdspu, GstVideoFrame *frame);
gboolean gstspu_vobsub_handle_dvd_event (GstDVDSpu *dvdspu, GstEvent *event);
void gstspu_vobsub_flush (GstDVDSpu *dvdspu);