--- /dev/null
+/*
+ * Copyright (C) 2003 Ivan Kalvachev
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_XVMC_H
+#define AVCODEC_XVMC_H
+
+#include <X11/extensions/XvMC.h>
+
+#include "avcodec.h"
+
+#if LIBAVCODEC_VERSION_MAJOR < 53
+#define AV_XVMC_STATE_DISPLAY_PENDING 1 /** the surface should be shown, the video driver manipulates this */
+#define AV_XVMC_STATE_PREDICTION 2 /** the surface is needed for prediction, the codec manipulates this */
+#define AV_XVMC_STATE_OSD_SOURCE 4 /** the surface is needed for subpicture rendering */
+#endif
+#define AV_XVMC_ID 0x1DC711C0 /**< special value to ensure that regular pixel routines haven't corrupted the struct
+ the number is 1337 speak for the letters IDCT MCo (motion compensation) */
+
+struct xvmc_pix_fmt {
+ /** The field contains the special constant value AV_XVMC_ID.
+ It is used as a test that the application correctly uses the API,
+ and that there is no corruption caused by pixel routines.
+ - application - set during initialization
+ - libavcodec - unchanged
+ */
+ int xvmc_id;
+
+ /** Pointer to the block array allocated by XvMCCreateBlocks().
+ The array has to be freed by XvMCDestroyBlocks().
+ Each group of 64 values represents one data block of differential
+ pixel information (in MoCo mode) or coefficients for IDCT.
+ - application - set the pointer during initialization
+ - libavcodec - fills coefficients/pixel data into the array
+ */
+ short* data_blocks;
+
+ /** Pointer to the macroblock description array allocated by
+ XvMCCreateMacroBlocks() and freed by XvMCDestroyMacroBlocks().
+ - application - set the pointer during initialization
+ - libavcodec - fills description data into the array
+ */
+ XvMCMacroBlock* mv_blocks;
+
+ /** Number of macroblock descriptions that can be stored in the mv_blocks
+ array.
+ - application - set during initialization
+ - libavcodec - unchanged
+ */
+ int allocated_mv_blocks;
+
+ /** Number of blocks that can be stored at once in the data_blocks array.
+ - application - set during initialization
+ - libavcodec - unchanged
+ */
+ int allocated_data_blocks;
+
+ /** Indicates that the hardware would interpret data_blocks as IDCT
+ coefficients and perform IDCT on them.
+ - application - set during initialization
+ - libavcodec - unchanged
+ */
+ int idct;
+
+ /** In MoCo mode it indicates that intra macroblocks are assumed to be in
+ unsigned format; same as the XVMC_INTRA_UNSIGNED flag.
+ - application - set during initialization
+ - libavcodec - unchanged
+ */
+ int unsigned_intra;
+
+ /** Pointer to the surface allocated by XvMCCreateSurface().
+ It has to be freed by XvMCDestroySurface() on application exit.
+ It identifies the frame and its state on the video hardware.
+ - application - set during initialization
+ - libavcodec - unchanged
+ */
+ XvMCSurface* p_surface;
+
+/** Set by the decoder before calling ff_draw_horiz_band(),
+ needed by the XvMCRenderSurface function. */
+//@{
+ /** Pointer to the surface used as past reference
+ - application - unchanged
+ - libavcodec - set
+ */
+ XvMCSurface* p_past_surface;
+
+ /** Pointer to the surface used as future reference
+ - application - unchanged
+ - libavcodec - set
+ */
+ XvMCSurface* p_future_surface;
+
+ /** top/bottom field or frame
+ - application - unchanged
+ - libavcodec - set
+ */
+ unsigned int picture_structure;
+
+ /** XVMC_SECOND_FIELD - 1st or 2nd field in the sequence
+ - application - unchanged
+ - libavcodec - set
+ */
+ unsigned int flags;
+//}@
+
+ /** Number of macroblock descriptions in the mv_blocks array
+ that have already been passed to the hardware.
+ - application - zeroes it on get_buffer().
+ A successful ff_draw_horiz_band() may increment it
+ with filled_mb_block_num or zero both.
+ - libavcodec - unchanged
+ */
+ int start_mv_blocks_num;
+
+ /** Number of new macroblock descriptions in the mv_blocks array (after
+ start_mv_blocks_num) that are filled by libavcodec and have to be
+ passed to the hardware.
+ - application - zeroes it on get_buffer() or after successful
+ ff_draw_horiz_band().
+ - libavcodec - increment with one of each stored MB
+ */
+ int filled_mv_blocks_num;
+
+ /** Number of the the next free data block; one data block consists of
+ 64 short values in the data_blocks array.
+ All blocks before this one are already claimed by filling their number
+ into the corresponding blocks description structure field,
+ that are hold in mv_blocks array.
+ - application - zeroes it on get_buffer().
+ A successful ff_draw_horiz_band() may zero it together
+ with start_mb_blocks_num.
+ - libavcodec - each decoded macroblock increases it by the number
+ of coded blocks it contains.
+ */
+ int next_free_data_block_num;
+
+/** extensions may be placed here */
+#if LIBAVCODEC_VERSION_MAJOR < 53
+//@{
+ /** State flags used to work around limitations in the MPlayer video system.
+ 0 - Surface is not used.
+ 1 - Surface is still held in application to be displayed or is
+ still visible.
+ 2 - Surface is still held in libavcodec buffer for prediction.
+ */
+ int state;
+
+ /** pointer to the surface where the subpicture is rendered */
+ void* p_osd_target_surface_render;
+//}@
+#endif
+};
+
+#endif /* AVCODEC_XVMC_H */
projects / opencv / blobdiff