From c33d98141da8501b45d886f898c9bbd57143d24e Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Tue, 8 May 2007 08:52:38 +0000 Subject: [PATCH] Move H.263 parser to its own file. Originally committed as revision 8934 to svn://svn.ffmpeg.org/ffmpeg/trunk --- configure | 1 + libavcodec/Makefile | 2 +- libavcodec/h263_parser.c | 91 ++++++++++++++++++++++++++++++++++++++++++++++++ libavcodec/h263_parser.h | 22 ++++++++++++ libavcodec/h263dec.c | 71 ++----------------------------------- 5 files changed, 117 insertions(+), 70 deletions(-) create mode 100644 libavcodec/h263_parser.c create mode 100644 libavcodec/h263_parser.h diff --git a/configure b/configure index 2e8112716..ec2bb7e10 100755 --- a/configure +++ b/configure @@ -676,6 +676,7 @@ CMDLINE_SELECT=" dxa_decoder_deps="zlib" flashsv_decoder_deps="zlib" flashsv_encoder_deps="zlib" +h263_decoder_deps="h263_parser" mpeg_xvmc_decoder_deps="xvmc" png_decoder_deps="zlib" png_encoder_deps="zlib" diff --git a/libavcodec/Makefile b/libavcodec/Makefile index acc8369e5..51254d764 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -282,7 +282,7 @@ OBJS-$(CONFIG_DCA_PARSER) += dca_parser.o OBJS-$(CONFIG_DVBSUB_PARSER) += dvbsub_parser.o OBJS-$(CONFIG_DVDSUB_PARSER) += dvdsub_parser.o OBJS-$(CONFIG_H261_PARSER) += h261_parser.o -OBJS-$(CONFIG_H263_PARSER) += h263dec.o +OBJS-$(CONFIG_H263_PARSER) += h263_parser.o OBJS-$(CONFIG_H264_PARSER) += h264.o OBJS-$(CONFIG_MJPEG_PARSER) += mjpeg.o OBJS-$(CONFIG_MPEG4VIDEO_PARSER) += mpeg4video_parser.o diff --git a/libavcodec/h263_parser.c b/libavcodec/h263_parser.c new file mode 100644 index 000000000..7031ad901 --- /dev/null +++ b/libavcodec/h263_parser.c @@ -0,0 +1,91 @@ +/* + * H.263 parser + * Copyright (c) 2002-2004 Michael Niedermayer + * + * 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 + */ + +/** + * @file h263_parser.c + * H.263 parser + */ + +#include "parser.h" + +int ff_h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){ + int vop_found, i; + uint32_t state; + + vop_found= pc->frame_start_found; + state= pc->state; + + i=0; + if(!vop_found){ + for(i=0; i>(32-22) == 0x20){ + i++; + vop_found=1; + break; + } + } + } + + if(vop_found){ + for(; i>(32-22) == 0x20){ + pc->frame_start_found=0; + pc->state=-1; + return i-3; + } + } + } + pc->frame_start_found= vop_found; + pc->state= state; + + return END_NOT_FOUND; +} + +static int h263_parse(AVCodecParserContext *s, + AVCodecContext *avctx, + uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size) +{ + ParseContext *pc = s->priv_data; + int next; + + next= ff_h263_find_frame_end(pc, buf, buf_size); + + if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) { + *poutbuf = NULL; + *poutbuf_size = 0; + return buf_size; + } + + *poutbuf = (uint8_t *)buf; + *poutbuf_size = buf_size; + return next; +} + +AVCodecParser h263_parser = { + { CODEC_ID_H263 }, + sizeof(ParseContext), + NULL, + h263_parse, + ff_parse_close, +}; diff --git a/libavcodec/h263_parser.h b/libavcodec/h263_parser.h new file mode 100644 index 000000000..83df37878 --- /dev/null +++ b/libavcodec/h263_parser.h @@ -0,0 +1,22 @@ +/* + * H.263 parser + * Copyright (c) 2002-2004 Michael Niedermayer + * + * 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 + */ + +int ff_h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size); diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c index 8d7160ad4..cbbb9c506 100644 --- a/libavcodec/h263dec.c +++ b/libavcodec/h263dec.c @@ -28,6 +28,7 @@ #include "avcodec.h" #include "dsputil.h" #include "mpegvideo.h" +#include "h263_parser.h" //#define DEBUG //#define PRINT_FRAME_TIME @@ -358,64 +359,6 @@ int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){ return END_NOT_FOUND; } -static int h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){ - int vop_found, i; - uint32_t state; - - vop_found= pc->frame_start_found; - state= pc->state; - - i=0; - if(!vop_found){ - for(i=0; i>(32-22) == 0x20){ - i++; - vop_found=1; - break; - } - } - } - - if(vop_found){ - for(; i>(32-22) == 0x20){ - pc->frame_start_found=0; - pc->state=-1; - return i-3; - } - } - } - pc->frame_start_found= vop_found; - pc->state= state; - - return END_NOT_FOUND; -} - -#ifdef CONFIG_H263_PARSER -static int h263_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; - - next= h263_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; -} -#endif - int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size) @@ -454,7 +397,7 @@ uint64_t time= rdtsc(); if(s->codec_id==CODEC_ID_MPEG4){ next= ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size); }else if(s->codec_id==CODEC_ID_H263){ - next= h263_find_frame_end(&s->parse_context, buf, buf_size); + next= ff_h263_find_frame_end(&s->parse_context, buf, buf_size); }else{ av_log(s->avctx, AV_LOG_ERROR, "this codec does not support truncated bitstreams\n"); return -1; @@ -902,13 +845,3 @@ AVCodec flv_decoder = { ff_h263_decode_frame, CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 }; - -#ifdef CONFIG_H263_PARSER -AVCodecParser h263_parser = { - { CODEC_ID_H263 }, - sizeof(ParseContext), - NULL, - h263_parse, - ff_parse_close, -}; -#endif -- 2.11.0