/******************************************************************** * * * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. * * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * * * * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 * * by the Xiph.Org Foundation and contributors http://www.xiph.org/ * * * ******************************************************************** function: last mod: $Id: apiwrapper.c 16503 2009-08-22 18:14:02Z giles $ ********************************************************************/ #include <stdlib.h> #include <string.h> #include <limits.h> #include "apiwrapper.h" const char *theora_version_string(void){ return th_version_string(); } ogg_uint32_t theora_version_number(void){ return th_version_number(); } void theora_info_init(theora_info *_ci){ memset(_ci,0,sizeof(*_ci)); } void theora_info_clear(theora_info *_ci){ th_api_wrapper *api; api=(th_api_wrapper *)_ci->codec_setup; memset(_ci,0,sizeof(*_ci)); if(api!=NULL){ if(api->clear!=NULL)(*api->clear)(api); _ogg_free(api); } } void theora_clear(theora_state *_th){ /*Provide compatibility with mixed encoder and decoder shared lib versions.*/ if(_th->internal_decode!=NULL){ (*((oc_state_dispatch_vtable *)_th->internal_decode)->clear)(_th); } if(_th->internal_encode!=NULL){ (*((oc_state_dispatch_vtable *)_th->internal_encode)->clear)(_th); } if(_th->i!=NULL)theora_info_clear(_th->i); memset(_th,0,sizeof(*_th)); } int theora_control(theora_state *_th,int _req,void *_buf,size_t _buf_sz){ /*Provide compatibility with mixed encoder and decoder shared lib versions.*/ if(_th->internal_decode!=NULL){ return (*((oc_state_dispatch_vtable *)_th->internal_decode)->control)(_th, _req,_buf,_buf_sz); } else if(_th->internal_encode!=NULL){ return (*((oc_state_dispatch_vtable *)_th->internal_encode)->control)(_th, _req,_buf,_buf_sz); } else return TH_EINVAL; } ogg_int64_t theora_granule_frame(theora_state *_th,ogg_int64_t _gp){ /*Provide compatibility with mixed encoder and decoder shared lib versions.*/ if(_th->internal_decode!=NULL){ return (*((oc_state_dispatch_vtable *)_th->internal_decode)->granule_frame)( _th,_gp); } else if(_th->internal_encode!=NULL){ return (*((oc_state_dispatch_vtable *)_th->internal_encode)->granule_frame)( _th,_gp); } else return -1; } double theora_granule_time(theora_state *_th, ogg_int64_t _gp){ /*Provide compatibility with mixed encoder and decoder shared lib versions.*/ if(_th->internal_decode!=NULL){ return (*((oc_state_dispatch_vtable *)_th->internal_decode)->granule_time)( _th,_gp); } else if(_th->internal_encode!=NULL){ return (*((oc_state_dispatch_vtable *)_th->internal_encode)->granule_time)( _th,_gp); } else return -1; } void oc_theora_info2th_info(th_info *_info,const theora_info *_ci){ _info->version_major=_ci->version_major; _info->version_minor=_ci->version_minor; _info->version_subminor=_ci->version_subminor; _info->frame_width=_ci->width; _info->frame_height=_ci->height; _info->pic_width=_ci->frame_width; _info->pic_height=_ci->frame_height; _info->pic_x=_ci->offset_x; _info->pic_y=_ci->offset_y; _info->fps_numerator=_ci->fps_numerator; _info->fps_denominator=_ci->fps_denominator; _info->aspect_numerator=_ci->aspect_numerator; _info->aspect_denominator=_ci->aspect_denominator; switch(_ci->colorspace){ case OC_CS_ITU_REC_470M:_info->colorspace=TH_CS_ITU_REC_470M;break; case OC_CS_ITU_REC_470BG:_info->colorspace=TH_CS_ITU_REC_470BG;break; default:_info->colorspace=TH_CS_UNSPECIFIED;break; } switch(_ci->pixelformat){ case OC_PF_420:_info->pixel_fmt=TH_PF_420;break; case OC_PF_422:_info->pixel_fmt=TH_PF_422;break; case OC_PF_444:_info->pixel_fmt=TH_PF_444;break; default:_info->pixel_fmt=TH_PF_RSVD; } _info->target_bitrate=_ci->target_bitrate; _info->quality=_ci->quality; _info->keyframe_granule_shift=_ci->keyframe_frequency_force>0? OC_MINI(31,oc_ilog(_ci->keyframe_frequency_force-1)):0; } int theora_packet_isheader(ogg_packet *_op){ return th_packet_isheader(_op); } int theora_packet_iskeyframe(ogg_packet *_op){ return th_packet_iskeyframe(_op); } int theora_granule_shift(theora_info *_ci){ /*This breaks when keyframe_frequency_force is not positive or is larger than 2**31 (if your int is more than 32 bits), but that's what the original function does.*/ return oc_ilog(_ci->keyframe_frequency_force-1); } void theora_comment_init(theora_comment *_tc){ th_comment_init((th_comment *)_tc); } char *theora_comment_query(theora_comment *_tc,char *_tag,int _count){ return th_comment_query((th_comment *)_tc,_tag,_count); } int theora_comment_query_count(theora_comment *_tc,char *_tag){ return th_comment_query_count((th_comment *)_tc,_tag); } void theora_comment_clear(theora_comment *_tc){ th_comment_clear((th_comment *)_tc); } void theora_comment_add(theora_comment *_tc,char *_comment){ th_comment_add((th_comment *)_tc,_comment); } void theora_comment_add_tag(theora_comment *_tc, char *_tag, char *_value){ th_comment_add_tag((th_comment *)_tc,_tag,_value); }