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Diffstat (limited to 'contrib/ffmpeg/libavformat/avc.c')
| -rw-r--r-- | contrib/ffmpeg/libavformat/avc.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/contrib/ffmpeg/libavformat/avc.c b/contrib/ffmpeg/libavformat/avc.c deleted file mode 100644 index 0c180c86b..000000000 --- a/contrib/ffmpeg/libavformat/avc.c +++ /dev/null @@ -1,135 +0,0 @@ -/* - * AVC helper functions for muxers - * Copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@smartjog.com> - * - * 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 "avformat.h" -#include "avio.h" - -const uint8_t *ff_avc_find_startcode(const uint8_t *p, const uint8_t *end) -{ - const uint8_t *a = p + 4 - ((long)p & 3); - - for( end -= 3; p < a && p < end; p++ ) { - if( p[0] == 0 && p[1] == 0 && p[2] == 1 ) - return p; - } - - for( end -= 3; p < end; p += 4 ) { - uint32_t x = *(const uint32_t*)p; -// if( (x - 0x01000100) & (~x) & 0x80008000 ) // little endian -// if( (x - 0x00010001) & (~x) & 0x00800080 ) // big endian - if( (x - 0x01010101) & (~x) & 0x80808080 ) { // generic - if( p[1] == 0 ) { - if( p[0] == 0 && p[2] == 1 ) - return p-1; - if( p[2] == 0 && p[3] == 1 ) - return p; - } - if( p[3] == 0 ) { - if( p[2] == 0 && p[4] == 1 ) - return p+1; - if( p[4] == 0 && p[5] == 1 ) - return p+2; - } - } - } - - for( end += 3; p < end; p++ ) { - if( p[0] == 0 && p[1] == 0 && p[2] == 1 ) - return p; - } - - return end + 3; -} - -int ff_avc_parse_nal_units(const uint8_t *buf_in, uint8_t **buf, int *size) -{ - ByteIOContext *pb; - const uint8_t *p = buf_in; - const uint8_t *end = p + *size; - const uint8_t *nal_start, *nal_end; - int ret = url_open_dyn_buf(&pb); - if(ret < 0) - return ret; - - nal_start = ff_avc_find_startcode(p, end); - while (nal_start < end) { - while(!*(nal_start++)); - nal_end = ff_avc_find_startcode(nal_start, end); - put_be32(pb, nal_end - nal_start); - put_buffer(pb, nal_start, nal_end - nal_start); - nal_start = nal_end; - } - av_freep(buf); - *size = url_close_dyn_buf(pb, buf); - return 0; -} - -int ff_isom_write_avcc(ByteIOContext *pb, const uint8_t *data, int len) -{ - if (len > 6) { - /* check for h264 start code */ - if (AV_RB32(data) == 0x00000001) { - uint8_t *buf=NULL, *end, *start; - uint32_t sps_size=0, pps_size=0; - uint8_t *sps=0, *pps=0; - - int ret = ff_avc_parse_nal_units(data, &buf, &len); - if (ret < 0) - return ret; - start = buf; - end = buf + len; - - /* look for sps and pps */ - while (buf < end) { - unsigned int size; - uint8_t nal_type; - size = AV_RB32(buf); - nal_type = buf[4] & 0x1f; - if (nal_type == 7) { /* SPS */ - sps = buf + 4; - sps_size = size; - } else if (nal_type == 8) { /* PPS */ - pps = buf + 4; - pps_size = size; - } - buf += size + 4; - } - assert(sps); - assert(pps); - - put_byte(pb, 1); /* version */ - put_byte(pb, sps[1]); /* profile */ - put_byte(pb, sps[2]); /* profile compat */ - put_byte(pb, sps[3]); /* level */ - put_byte(pb, 0xff); /* 6 bits reserved (111111) + 2 bits nal size length - 1 (11) */ - put_byte(pb, 0xe1); /* 3 bits reserved (111) + 5 bits number of sps (00001) */ - - put_be16(pb, sps_size); - put_buffer(pb, sps, sps_size); - put_byte(pb, 1); /* number of pps */ - put_be16(pb, pps_size); - put_buffer(pb, pps, pps_size); - av_free(start); - } else { - put_buffer(pb, data, len); - } - } - return 0; -} |