X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fxvmc.h;h=01f84b28c5e6ae053888660fe05a69e290c0d1d6;hb=b3507d398b703ed8f06d8608f254c3937a7a42b0;hp=9c37e67d5393144c4a9fb12484beb08be31a0a39;hpb=ea375af8c9480583d3e0fe444f6ce048f34b46f3;p=ffmpeg diff --git a/libavcodec/xvmc.h b/libavcodec/xvmc.h index 9c37e67d539..01f84b28c5e 100644 --- a/libavcodec/xvmc.h +++ b/libavcodec/xvmc.h @@ -21,55 +21,152 @@ #ifndef AVCODEC_XVMC_H #define AVCODEC_XVMC_H -#include -#include -#include -#include -#include -#include - - -//the surface should be shown, the video driver manipulates this -#define AV_XVMC_STATE_DISPLAY_PENDING 1 -//the surface is needed for prediction, the codec manipulates this -#define AV_XVMC_STATE_PREDICTION 2 -//this surface is needed for subpicture rendering -#define AV_XVMC_STATE_OSD_SOURCE 4 -// 1337 IDCT MCo -#define AV_XVMC_RENDER_MAGIC 0x1DC711C0 - -struct xvmc_render_state { - //these are not changed by the decoder! - int magic; ///< used as check for memory corruption by regular pixel routines - - short * data_blocks; - XvMCMacroBlock * mv_blocks; - int total_number_of_mv_blocks; - int total_number_of_data_blocks; - int mc_type; //XVMC_MPEG1/2/4,XVMC_H263 without XVMC_IDCT - int idct; //< indicate that IDCT acceleration level is used - int chroma_format; ///< XVMC_CHROMA_FORMAT_420/422/444 - int unsigned_intra; //+-128 for intra pictures after clipping - XvMCSurface* p_surface; //pointer to rendered surface, never changed - - //these are changed by the decoder - //used by the XvMCRenderSurface function - XvMCSurface* p_past_surface; //pointer to the past surface - XvMCSurface* p_future_surface; //pointer to the future prediction surface - - unsigned int picture_structure; //top/bottom fields or frame! - unsigned int flags; //XVMC_SECOND_FIELD - 1st or 2nd field in the sequence - unsigned int display_flags; //1,2 or 1+2 fields for XvMCPutSurface - - //these are for internal communication - int state; //0 - free, 1 - waiting to display, 2 - waiting for prediction - int start_mv_blocks_num; //offset in the array for the current slice, updated by vo - int filled_mv_blocks_num; //processed mv block in this slice, changed by decoder - - int next_free_data_block_num; //used in add_mv_block, pointer to next free block - //extensions - void * p_osd_target_surface_render; //pointer to the surface where subpicture is rendered +#include +#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 have already been claimed by placing their + position into the corresponding block description structure field, + that are part of the 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 */