/* ------------------------------------------------------------------------ */
void
decode_start_dyn(void)
{
n_max = 286;
maxmatch = MAXMATCH;
init_getbits();
start_c_dyn();
start_p_dyn();
}
/* lh2 */
void
decode_start_dyn( /* void */ )
{
n_max = 286;
maxmatch = MAXMATCH;
init_getbits();
init_code_cache();
start_c_dyn();
start_p_dyn();
}
/* ------------------------------------------------------------------------ */
void
decode_start_fix(/*void*/)
{
n_max = 314;
maxmatch = 60;
init_getbits();
np = 1 << (12 - 6);
start_c_dyn();
ready_made(0);
lha_make_table(np, pt_len, 8, pt_table);
}
/* ------------------------------------------------------------------------ */
void decode_start_st0(void)
{
n_max = 286;
maxmatch = MAXMATCH;
init_getbits();
#ifdef SUPPORT_LH7
np = 1 << (MAX_DICBIT - 7);
#endif
#ifndef SUPPORT_LH7
np = 1 << (MAX_DICBIT - 6);
#endif
}
int main(int argc, char* argv[])
{
char tmpStr[256];
col = 0;
verbose_level = 1;
sequence_headers = 0;
sequence_extensions = 0;
user_data_bytes = 0;
sequence_scalable_extension_present = 0;
printf("bbVINFO - version 1.7, by Brent Beyeler ([email protected])\n");
printf(" speed increases by, Apachez and Christian Vogelgsang\n\n");
if (argc < 2)
{
printf("\nbbVINFO is an MPEG video stream analyzer\n\n");
printf("Usage: bbVINFO MPEG video filename <verbose level 1..3, default = 1>\n\n");
printf("Examples:\n");
printf(" To list all packet start codes (excluding slice codes) to file test.txt\n");
printf(" bbVINFO test.mpg 1 > test.txt\n\n");
printf(" To list all packets (excluding slice packets) in detail\n");
printf(" bbVINFO test.vob 2\n\n");
printf(" To list all packets (including slice packets) in detail to file test.txt\n");
printf(" bbVINFO test.mpg 3 > test.txt\n\n");
exit (1);
}
init_getbits(argv[1]);
strcpy(tmpStr, argv[1]);
// strlwr(tmpStr);
if (argc > 2)
{
sscanf(argv[2], "%d", &verbose_level);
if (verbose_level < 1)
verbose_level = 1;
if (verbose_level > 3)
verbose_level = 3;
}
next_start_code();
if (getbits(8) != SEQUENCE_HEADER_CODE)
{
printf("\nFile is not an MPEG Video Stream\n");
exit(1);
}
next_start_code();
if (getbits(8) != EXTENSION_START_CODE)
mpeg2 = 0;
else
mpeg2 = 1;
printf("\nFile %s is an MPEG-%d video stream\n", argv[1], mpeg2 + 1);
finish_getbits();
init_getbits(argv[1]);
next_start_code();
sequence_header();
if (mpeg2)
sequence_extension();
do
{
extension_and_user_data(0);
do
{
if (nextbits(8) == GROUP_START_CODE)
{
group_of_pictures_header();
extension_and_user_data(1);
}
picture_header();
if (mpeg2)
picture_coding_extension();
extension_and_user_data(2);
picture_data();
} while ((nextbits(8) == PICTURE_START_CODE) ||
(nextbits(8) == GROUP_START_CODE));
if (nextbits(8) != SEQUENCE_END_CODE)
{
sequence_header();
if (mpeg2)
sequence_extension();
}
} while (nextbits(8) != SEQUENCE_END_CODE);
zprintf(1, "\nsequence_end_code = 0x000001%02X\n", getbits(8));
finish_getbits();
return (0);
}
int main(int argc, char* argv[])
{
char tmpStr[256];
col = 0;
verbose_level = 1;
syncwords = 0;
printf("bbAINFO - version 1.7, by Brent Beyeler ([email protected])\n");
printf(" speed increases by, Apachez and Christian Vogelgsang\n\n");
if (argc < 2)
{
printf("\nbbAINFO is an MPEG audio stream analyzer\n");
printf("All it realy does is list the sync word headers\n\n");
printf("Usage: bbAINFO MPEG audio filename\n\n");
printf("Examples:\n");
printf(" To list all frames to file test.txt\n");
printf(" bbAINFO test.mpg > test.txt\n\n");
exit (1);
}
init_getbits(argv[1]);
strcpy(tmpStr, argv[1]);
// strlwr(tmpStr);
if (argc > 2)
{
sscanf(argv[2], "%d", &verbose_level);
if (verbose_level < 1)
verbose_level = 1;
if (verbose_level > 3)
verbose_level = 3;
}
if (nextbits(12) != SYNCWORD)
{
printf("\nFile is not an MPEG Audio Stream\n");
exit(1);
}
do
{
header();
error_check();
audio_data();
ancillary_data();
} while (!end_bs());
printf("\nFound %u sync words\n", syncwords);
printf("\nHeader info summary:\n");
switch (layer)
{
case 0:
printf(" layer = reserved\n");
break;
case LAYER_1:
printf(" layer = 1\n");
break;
case LAYER_2:
printf(" layer = 2\n");
break;
case LAYER_3:
printf(" layer = 3\n");
break;
}
printf(" bitrate = %d Kbps\n", bitrate_index[3 - layer][bit_rate]);
printf(" frequency = %.1f kHz\n", frequency[freq]);
if (protection)
printf(" error protection = disabled\n");
else
printf(" error protection = enabled\n");
printf(" private flag = %d\n", private_bit);
switch (mode)
{
case 0:
printf(" mode = stereo\n");
break;
case 1:
printf(" mode = joint_stereo (intensity_stereo and/or ms_stereo)\n");
break;
case 2:
printf(" mode = dual_channel\n");
break;
case 3:
printf(" mode = single_channel\n");
}
if (layer == LAYER_3)
{
switch (mode_ext)
{
case 0:
printf(" mode ext = intensity stereo is off, ms stereo is off\n");
break;
case 1:
printf(" mode ext = intensity stereo is on, ms stereo is off\n");
break;
case 2:
printf(" mode ext = intensity stereo is off, ms stereo is on\n");
break;
case 3:
printf(" mode ext = intensity stereo is on, ms stereo is on\n");
}
}
else
{
if (mode == 1)
{
switch (mode_ext)
{
case 0:
printf(" mode ext = subbands 4-31 in intensity_stereo, bound==4\n");
break;
case 1:
printf(" mode ext = subbands 8-31 in intensity_stereo, bound==8\n");
break;
case 2:
printf(" mode ext = subbands 12-31 in intensity_stereo, bound==12\n");
break;
case 3:
printf(" mode ext = subbands 16-31 in intensity_stereo, bound==16\n");
}
}
}
printf(" copyright flag = %d\n", copyright);
printf(" original flag = %d\n", original);
switch (emphasis)
{
case 0:
printf(" emphasis = none\n");
break;
case 1:
printf(" emphasis = 50/15 microsec. emphasis\n");
break;
case 2:
printf(" emphasis = reserved\n");
break;
case 3:
printf(" emphasis = CCITT J.17\n");
}
finish_getbits();
return (0);
}
/* lzs */
void
decode_start_lzs( /*void*/ )
{
init_getbits();
init_code_cache();
}
