diff options
Diffstat (limited to 'media/libtheora/lib/apiwrapper.c')
| -rw-r--r-- | media/libtheora/lib/apiwrapper.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/media/libtheora/lib/apiwrapper.c b/media/libtheora/lib/apiwrapper.c new file mode 100644 index 0000000000..dc959b8d13 --- /dev/null +++ b/media/libtheora/lib/apiwrapper.c @@ -0,0 +1,166 @@ +/******************************************************************** + * * + * 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); +} |