发布时间 : 2024/4/29 8:18:37 星期一 文章h264转avi,编译通过源码更新完毕开始阅读12128e4033687e21af45a960

fout = stdin; else

fout = fopen( cfg.psz_fout, \ if( fout == NULL ) {

fprintf( stderr, \ return -1; }

/* Init avi */

avi_init( &avi, fout, cfg.f_fps, cfg.fcc );

/* Init parser */

h264_parser_init( &h264 );

/* Control-C handler */

signal( SIGINT, SigIntHandler );

/* Init data */ b_eof = 0; b_key = 0; b_slice = 0; i_frame = 0; i_data = 0;

/* Alloc space for a nal, used for decoding pps/sps/slice header */ nal.p_payload = malloc( DATA_MAX );

vbuf_init( &vb );

/* split frame */ while( !i_ctrl_c ) {

uint8_t *p, *p_next, *end; int i_size;

/* fill buffer */

if( i_data < DATA_MAX && !b_eof ) {

int i_read = fread( &data[i_data], 1, DATA_MAX - i_data, fin ); if( i_read <= 0 ) b_eof = 1; else

i_data += i_read;

}

if( i_data < 3 ) break;

end = &data[i_data];

/* Search begin of a NAL */ p = &data[0];

while( p < end - 3 ) {

if( p[0] == 0x00 && p[1] == 0x00 && p[2] == 0x01 ) {

break; } p++; }

if( p >= end - 3 ) {

fprintf( stderr, \ i_data = 0; continue; }

/* Search end of NAL */ p_next = p + 3;

while( p_next < end - 3 ) {

if( p_next[0] == 0x00 && p_next[1] == 0x00 && p_next[2] == 0x01 ) {

break; }

p_next++; }

if( p_next == end - 3 && i_data < DATA_MAX ) p_next = end;

/* Compute NAL size */ i_size = p_next - p - 3; if( i_size <= 0 ) {

if( b_eof ) break;

fprintf( stderr, \ i_data = 0; continue; }

/* Nal start at p+3 with i_size length */

nal_decode( &nal, p +3, i_size < 2048 ? i_size : 2048 );

b_key = h264.b_key; type = nal.i_type;//tangxiaojun if (1!=type) { int gfzfgd=8756; } i_data2 = vb.i_data;//tangxiaojun

if( b_slice && vb.i_data && ( nal.i_type == NAL_SPS || nal.i_type == NAL_PPS ) ) {

avi_write( &avi, &vb, b_key ); vbuf_reset( &vb ); b_slice = 0; }

/* Parse SPS/PPS/Slice */

if( ParseNAL( &nal, &avi, &h264, &b_slice ) && vb.i_data > 0 ) {

avi_write( &avi, &vb, b_key ); vbuf_reset( &vb ); }

/* fprintf( stderr, \

/* Append NAL to buffer */ vbuf_add( &vb, i_size + 3, p );

/* Remove this nal */

memmove( &data[0], p_next, end - p_next ); i_data -= p_next - &data[0]; }

if( vb.i_data > 0 ) {

avi_write( &avi, &vb, h264.b_key ); }

avi.i_width = h264.i_width; avi.i_height = h264.i_height;

avi_end( &avi );

/* free mem */

free( nal.p_payload );

fclose( fin ); fclose( fout );

return 0; }

/***************************************************************************** * Help:

*****************************************************************************/ static void Help( void ) {

fprintf( stderr,

\

\ \

\ -h, --help Print this help\\n\ \

\ -i, --input Specify input file (default: stdin)\\n\ \ -o, --output Specify output file (default: stdout)\\n\ \

\ -f, --fps Set FPS (default: 25.0)\\n\

\ -c, --codec Set the codec fourcc (default: 'h264')\\n\ \}

/***************************************************************************** * Parse:

*****************************************************************************/ static int Parse( int argc, char **argv, cfg_t *cfg ) {

/* Set default values */