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