diff options
Diffstat (limited to 'demux/parse_es.c')
| -rw-r--r-- | demux/parse_es.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/demux/parse_es.c b/demux/parse_es.c deleted file mode 100644 index 8e43446c1f..0000000000 --- a/demux/parse_es.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * MPEG-ES video parser - * - * This file is part of MPlayer. - * - * MPlayer is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * MPlayer 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with MPlayer; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> - -#include "config.h" -#include "core/mp_msg.h" - -#include "stream/stream.h" -#include "demux.h" -#include "parse_es.h" - -//static unsigned char videobuffer[MAX_VIDEO_PACKET_SIZE]; -unsigned char* videobuffer=NULL; -int videobuf_len=0; -int next_nal = -1; -///! legacy variable, 4 if stream is synced, 0 if not -int videobuf_code_len=0; - -#define MAX_SYNCLEN (10 * 1024 * 1024) -// sync video stream, and returns next packet code -int sync_video_packet(demux_stream_t *ds){ - if (!videobuf_code_len) { - int skipped=0; - if (!demux_pattern_3(ds, NULL, MAX_SYNCLEN, &skipped, 0x100)) { - if (skipped == MAX_SYNCLEN) - mp_msg(MSGT_DEMUXER, MSGL_ERR, "parse_es: could not sync video stream!\n"); - goto eof_out; - } - next_nal = demux_getc(ds); - if (next_nal < 0) - goto eof_out; - videobuf_code_len = 4; - if(skipped) mp_dbg(MSGT_PARSEES,MSGL_DBG2,"videobuf: %d bytes skipped (next: 0x1%02X)\n",skipped,next_nal); - } - return 0x100|next_nal; - -eof_out: - next_nal = -1; - videobuf_code_len = 0; - return 0; -} - -// return: packet length -int read_video_packet(demux_stream_t *ds){ -int packet_start; - int res, read; - - if (VIDEOBUFFER_SIZE - videobuf_len < 5) - return 0; - // SYNC STREAM -// if(!sync_video_packet(ds)) return 0; // cannot sync (EOF) - - // COPY STARTCODE: - packet_start=videobuf_len; - videobuffer[videobuf_len+0]=0; - videobuffer[videobuf_len+1]=0; - videobuffer[videobuf_len+2]=1; - videobuffer[videobuf_len+3]=next_nal; - videobuf_len+=4; - - // READ PACKET: - res = demux_pattern_3(ds, &videobuffer[videobuf_len], - VIDEOBUFFER_SIZE - videobuf_len, &read, 0x100); - videobuf_len += read; - if (!res) - goto eof_out; - - videobuf_len-=3; - - mp_dbg(MSGT_PARSEES,MSGL_DBG2,"videobuf: packet 0x1%02X len=%d (total=%d)\n",videobuffer[packet_start+3],videobuf_len-packet_start,videobuf_len); - - // Save next packet code: - next_nal = demux_getc(ds); - if (next_nal < 0) - goto eof_out; - videobuf_code_len=4; - - return videobuf_len-packet_start; - -eof_out: - next_nal = -1; - videobuf_code_len = 0; - return videobuf_len - packet_start; -} - -// return: next packet code -int skip_video_packet(demux_stream_t *ds){ - - // SYNC STREAM -// if(!sync_video_packet(ds)) return 0; // cannot sync (EOF) - - videobuf_code_len=0; // force resync - - // SYNC AGAIN: - return sync_video_packet(ds); -} - -/* stripped down version of a52_syncinfo() from liba52 - * copyright belongs to Michel Lespinasse <walken@zoy.org> - * and Aaron Holtzman <aholtzma@ess.engr.uvic.ca> */ -int mp_a52_framesize(uint8_t * buf, int *srate) -{ - int rate[] = { 32, 40, 48, 56, 64, 80, 96, 112, - 128, 160, 192, 224, 256, 320, 384, 448, - 512, 576, 640 - }; - uint8_t halfrate[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3 }; - int frmsizecod, bitrate, half; - - if ((buf[0] != 0x0b) || (buf[1] != 0x77)) /* syncword */ - return 0; - - if (buf[5] >= 0x60) /* bsid >= 12 */ - return 0; - - half = halfrate[buf[5] >> 3]; - - frmsizecod = buf[4] & 63; - if (frmsizecod >= 38) - return 0; - - bitrate = rate[frmsizecod >> 1]; - - switch (buf[4] & 0xc0) { - case 0: /* 48 KHz */ - *srate = 48000 >> half; - return 4 * bitrate; - case 0x40: /* 44.1 KHz */ - *srate = 44100 >> half; - return 2 * (320 * bitrate / 147 + (frmsizecod & 1)); - case 0x80: /* 32 KHz */ - *srate = 32000 >> half; - return 6 * bitrate; - } - - return 0; -} |