diff options
author | Aurelien Jacobs <aurel@gnuage.org> | 2007-05-09 04:03:17 +0400 |
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committer | Aurelien Jacobs <aurel@gnuage.org> | 2007-05-09 04:03:17 +0400 |
commit | c5a60225c7abeed5575a6685cc680927e225ddfb (patch) | |
tree | ebca191637ead4de37166839236cca268f265402 /libavcodec | |
parent | b88e2114269e56f9c3c9f7eedda0807a327358ea (diff) |
move cavs parser in it's own file
Originally committed as revision 8945 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/Makefile | 2 | ||||
-rw-r--r-- | libavcodec/cavs.c | 81 | ||||
-rw-r--r-- | libavcodec/cavs_parser.c | 107 |
3 files changed, 108 insertions, 82 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 12f82c0bee..ece2a2e0f7 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -277,7 +277,7 @@ OBJS-$(CONFIG_XVID) += xvidff.o xvid_rc.o OBJS-$(CONFIG_AAC_PARSER) += aac_parser.o aac_ac3_parser.o OBJS-$(CONFIG_AC3_PARSER) += ac3_parser.o ac3tab.o aac_ac3_parser.o -OBJS-$(CONFIG_CAVSVIDEO_PARSER) += cavs.o +OBJS-$(CONFIG_CAVSVIDEO_PARSER) += cavs_parser.o OBJS-$(CONFIG_DCA_PARSER) += dca_parser.o OBJS-$(CONFIG_DVBSUB_PARSER) += dvbsub_parser.o OBJS-$(CONFIG_DVDSUB_PARSER) += dvdsub_parser.o diff --git a/libavcodec/cavs.c b/libavcodec/cavs.c index 200668d2a1..c5f48480ad 100644 --- a/libavcodec/cavs.c +++ b/libavcodec/cavs.c @@ -30,7 +30,6 @@ #include "golomb.h" #include "mpegvideo.h" #include "cavs.h" -#ifdef CONFIG_CAVS_DECODER #include "cavsdata.h" typedef struct { @@ -1458,83 +1457,3 @@ AVCodec cavs_decoder = { CODEC_CAP_DR1 | CODEC_CAP_DELAY, .flush= cavs_flush, }; -#endif /* CONFIG_CAVS_DECODER */ - -#ifdef CONFIG_CAVSVIDEO_PARSER -/** - * finds the end of the current frame in the bitstream. - * @return the position of the first byte of the next frame, or -1 - */ -static int cavs_find_frame_end(ParseContext *pc, const uint8_t *buf, - int buf_size) { - int pic_found, i; - uint32_t state; - - pic_found= pc->frame_start_found; - state= pc->state; - - i=0; - if(!pic_found){ - for(i=0; i<buf_size; i++){ - state= (state<<8) | buf[i]; - if(state == PIC_I_START_CODE || state == PIC_PB_START_CODE){ - i++; - pic_found=1; - break; - } - } - } - - if(pic_found){ - /* EOF considered as end of frame */ - if (buf_size == 0) - return 0; - for(; i<buf_size; i++){ - state= (state<<8) | buf[i]; - if((state&0xFFFFFF00) == 0x100){ - if(state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE){ - pc->frame_start_found=0; - pc->state=-1; - return i-3; - } - } - } - } - pc->frame_start_found= pic_found; - pc->state= state; - return END_NOT_FOUND; -} - -static int cavsvideo_parse(AVCodecParserContext *s, - AVCodecContext *avctx, - const uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size) -{ - ParseContext *pc = s->priv_data; - int next; - - if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){ - next= buf_size; - }else{ - next= cavs_find_frame_end(pc, buf, buf_size); - - if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) { - *poutbuf = NULL; - *poutbuf_size = 0; - return buf_size; - } - } - *poutbuf = buf; - *poutbuf_size = buf_size; - return next; -} - -AVCodecParser cavsvideo_parser = { - { CODEC_ID_CAVS }, - sizeof(ParseContext1), - NULL, - cavsvideo_parse, - ff_parse1_close, - ff_mpeg4video_split, -}; -#endif /* CONFIG_CAVSVIDEO_PARSER */ diff --git a/libavcodec/cavs_parser.c b/libavcodec/cavs_parser.c new file mode 100644 index 0000000000..11146efbfb --- /dev/null +++ b/libavcodec/cavs_parser.c @@ -0,0 +1,107 @@ +/* + * Chinese AVS video (AVS1-P2, JiZhun profile) parser. + * Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de> + * + * 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 St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file cavs_parser.c + * Chinese AVS video (AVS1-P2, JiZhun profile) parser + * @author Stefan Gehrer <stefan.gehrer@gmx.de> + */ + +#include "parser.h" +#include "cavs.h" + + +/** + * finds the end of the current frame in the bitstream. + * @return the position of the first byte of the next frame, or -1 + */ +static int cavs_find_frame_end(ParseContext *pc, const uint8_t *buf, + int buf_size) { + int pic_found, i; + uint32_t state; + + pic_found= pc->frame_start_found; + state= pc->state; + + i=0; + if(!pic_found){ + for(i=0; i<buf_size; i++){ + state= (state<<8) | buf[i]; + if(state == PIC_I_START_CODE || state == PIC_PB_START_CODE){ + i++; + pic_found=1; + break; + } + } + } + + if(pic_found){ + /* EOF considered as end of frame */ + if (buf_size == 0) + return 0; + for(; i<buf_size; i++){ + state= (state<<8) | buf[i]; + if((state&0xFFFFFF00) == 0x100){ + if(state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE){ + pc->frame_start_found=0; + pc->state=-1; + return i-3; + } + } + } + } + pc->frame_start_found= pic_found; + pc->state= state; + return END_NOT_FOUND; +} + +static int cavsvideo_parse(AVCodecParserContext *s, + AVCodecContext *avctx, + const uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size) +{ + ParseContext *pc = s->priv_data; + int next; + + if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){ + next= buf_size; + }else{ + next= cavs_find_frame_end(pc, buf, buf_size); + + if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) { + *poutbuf = NULL; + *poutbuf_size = 0; + return buf_size; + } + } + *poutbuf = buf; + *poutbuf_size = buf_size; + return next; +} + +AVCodecParser cavsvideo_parser = { + { CODEC_ID_CAVS }, + sizeof(ParseContext1), + NULL, + cavsvideo_parse, + ff_parse1_close, + ff_mpeg4video_split, +}; |