yading@10: /* yading@10: * imx dump header bitstream filter yading@10: * Copyright (c) 2007 Baptiste Coudurier yading@10: * yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: /** yading@10: * @file yading@10: * imx dump header bitstream filter yading@10: * modifies bitstream to fit in mov and be decoded by final cut pro decoder yading@10: */ yading@10: yading@10: #include "avcodec.h" yading@10: #include "bytestream.h" yading@10: yading@10: yading@10: static int imx_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, yading@10: uint8_t **poutbuf, int *poutbuf_size, yading@10: const uint8_t *buf, int buf_size, int keyframe) yading@10: { yading@10: /* MXF essence element key */ yading@10: static const uint8_t imx_header[16] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x05,0x01,0x01,0x00 }; yading@10: uint8_t *poutbufp; yading@10: yading@10: if (avctx->codec_id != AV_CODEC_ID_MPEG2VIDEO) { yading@10: av_log(avctx, AV_LOG_ERROR, "imx bitstream filter only applies to mpeg2video codec\n"); yading@10: return 0; yading@10: } yading@10: yading@10: *poutbuf = av_malloc(buf_size + 20 + FF_INPUT_BUFFER_PADDING_SIZE); yading@10: poutbufp = *poutbuf; yading@10: bytestream_put_buffer(&poutbufp, imx_header, 16); yading@10: bytestream_put_byte(&poutbufp, 0x83); /* KLV BER long form */ yading@10: bytestream_put_be24(&poutbufp, buf_size); yading@10: bytestream_put_buffer(&poutbufp, buf, buf_size); yading@10: *poutbuf_size = poutbufp - *poutbuf; yading@10: return 1; yading@10: } yading@10: yading@10: AVBitStreamFilter ff_imx_dump_header_bsf = { yading@10: "imxdump", yading@10: 0, yading@10: imx_dump_header, yading@10: };