diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 4c2345e2f2..1cdb66b5cd 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -307,7 +307,7 @@ OBJS-$(CONFIG_VC1_PARSER) += vc1_parser.o OBJS-$(CONFIG_DUMP_EXTRADATA_BSF) += bitstream_filter.o OBJS-$(CONFIG_REMOVE_EXTRADATA_BSF) += bitstream_filter.o OBJS-$(CONFIG_NOISE_BSF) += bitstream_filter.o -OBJS-$(CONFIG_MP3_HEADER_COMPRESS_BSF) += bitstream_filter.o +OBJS-$(CONFIG_MP3_HEADER_COMPRESS_BSF) += mp3_header_compress_bsf.o OBJS-$(CONFIG_MP3_HEADER_DECOMPRESS_BSF) += mp3_header_decompress_bsf.o mpegaudiodata.o OBJS-$(CONFIG_MJPEGA_DUMP_HEADER_BSF) += mjpegdec.o mjpeg.o jpeglsdec.o jpegls.o OBJS-$(CONFIG_IMX_DUMP_HEADER_BSF) += mpeg12.o diff --git a/libavcodec/bitstream_filter.c b/libavcodec/bitstream_filter.c index 39dcc48718..7c6ebf6fa7 100644 --- a/libavcodec/bitstream_filter.c +++ b/libavcodec/bitstream_filter.c @@ -19,7 +19,6 @@ */ #include "avcodec.h" -#include "mpegaudio.h" AVBitStreamFilter *first_bitstream_filter= NULL; @@ -125,63 +124,6 @@ static int noise(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const ch return 1; } -static int mp3_header_compress(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, - uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size, int keyframe){ - uint32_t header, extraheader; - int mode_extension, header_size; - - if(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){ - av_log(avctx, AV_LOG_ERROR, "not standards compliant\n"); - return -1; - } - - header = AV_RB32(buf); - mode_extension= (header>>4)&3; - - if(ff_mpa_check_header(header) < 0 || (header&0x60000) != 0x20000){ -output_unchanged: - *poutbuf= (uint8_t *) buf; - *poutbuf_size= buf_size; - - av_log(avctx, AV_LOG_INFO, "cannot compress %08X\n", header); - return 0; - } - - if(avctx->extradata_size == 0){ - avctx->extradata_size=15; - avctx->extradata= av_malloc(avctx->extradata_size); - strcpy(avctx->extradata, "FFCMP3 0.0"); - memcpy(avctx->extradata+11, buf, 4); - } - if(avctx->extradata_size != 15){ - av_log(avctx, AV_LOG_ERROR, "Extradata invalid\n"); - return -1; - } - extraheader = AV_RB32(avctx->extradata+11); - if((extraheader&MP3_MASK) != (header&MP3_MASK)) - goto output_unchanged; - - header_size= (header&0x10000) ? 4 : 6; - - *poutbuf_size= buf_size - header_size; - *poutbuf= av_malloc(buf_size - header_size + FF_INPUT_BUFFER_PADDING_SIZE); - memcpy(*poutbuf, buf + header_size, buf_size - header_size + FF_INPUT_BUFFER_PADDING_SIZE); - - if(avctx->channels==2){ - if((header & (3<<19)) != 3<<19){ - (*poutbuf)[1] &= 0x3F; - (*poutbuf)[1] |= mode_extension<<6; - FFSWAP(int, (*poutbuf)[1], (*poutbuf)[2]); - }else{ - (*poutbuf)[1] &= 0x8F; - (*poutbuf)[1] |= mode_extension<<4; - } - } - - return 1; -} - #ifdef CONFIG_DUMP_EXTRADATA_BSF AVBitStreamFilter dump_extradata_bsf={ "dump_extra", @@ -205,11 +147,3 @@ AVBitStreamFilter noise_bsf={ noise, }; #endif - -#ifdef CONFIG_MP3_HEADER_COMPRESS_BSF -AVBitStreamFilter mp3_header_compress_bsf={ - "mp3comp", - 0, - mp3_header_compress, -}; -#endif diff --git a/libavcodec/mp3_header_compress_bsf.c b/libavcodec/mp3_header_compress_bsf.c new file mode 100644 index 0000000000..f5c513834a --- /dev/null +++ b/libavcodec/mp3_header_compress_bsf.c @@ -0,0 +1,86 @@ +/* + * copyright (c) 2006 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 + */ + +#include "avcodec.h" +#include "mpegaudio.h" + + +static int mp3_header_compress(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, + uint8_t **poutbuf, int *poutbuf_size, + const uint8_t *buf, int buf_size, int keyframe){ + uint32_t header, extraheader; + int mode_extension, header_size; + + if(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){ + av_log(avctx, AV_LOG_ERROR, "not standards compliant\n"); + return -1; + } + + header = AV_RB32(buf); + mode_extension= (header>>4)&3; + + if(ff_mpa_check_header(header) < 0 || (header&0x60000) != 0x20000){ +output_unchanged: + *poutbuf= (uint8_t *) buf; + *poutbuf_size= buf_size; + + av_log(avctx, AV_LOG_INFO, "cannot compress %08X\n", header); + return 0; + } + + if(avctx->extradata_size == 0){ + avctx->extradata_size=15; + avctx->extradata= av_malloc(avctx->extradata_size); + strcpy(avctx->extradata, "FFCMP3 0.0"); + memcpy(avctx->extradata+11, buf, 4); + } + if(avctx->extradata_size != 15){ + av_log(avctx, AV_LOG_ERROR, "Extradata invalid\n"); + return -1; + } + extraheader = AV_RB32(avctx->extradata+11); + if((extraheader&MP3_MASK) != (header&MP3_MASK)) + goto output_unchanged; + + header_size= (header&0x10000) ? 4 : 6; + + *poutbuf_size= buf_size - header_size; + *poutbuf= av_malloc(buf_size - header_size + FF_INPUT_BUFFER_PADDING_SIZE); + memcpy(*poutbuf, buf + header_size, buf_size - header_size + FF_INPUT_BUFFER_PADDING_SIZE); + + if(avctx->channels==2){ + if((header & (3<<19)) != 3<<19){ + (*poutbuf)[1] &= 0x3F; + (*poutbuf)[1] |= mode_extension<<6; + FFSWAP(int, (*poutbuf)[1], (*poutbuf)[2]); + }else{ + (*poutbuf)[1] &= 0x8F; + (*poutbuf)[1] |= mode_extension<<4; + } + } + + return 1; +} + +AVBitStreamFilter mp3_header_compress_bsf={ + "mp3comp", + 0, + mp3_header_compress, +};