本文整理汇总了C++中read_8bit函数的典型用法代码示例。如果您正苦于以下问题：C++ read_8bit函数的具体用法？C++ read_8bit怎么用？C++ read_8bit使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了read_8bit函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: init_vgmstream_ps3_sgd
VGMSTREAM * init_vgmstream_ps3_sgd(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[260];
off_t start_offset;
int loop_flag = 0;
int channel_count;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("sgd",filename_extension(filename))) goto fail;
/* check header */
if (read_32bitBE(0x00,streamFile) != 0x53475844) /* "SGXD" */
goto fail;
loop_flag = (read_32bitLE(0x44,streamFile) != 0xFFFFFFFF);
channel_count = read_8bit(0x29,streamFile);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
start_offset = read_32bitLE(0x8,streamFile);
vgmstream->channels = channel_count;
vgmstream->sample_rate = read_32bitLE(0x2C,streamFile);
vgmstream->coding_type = coding_PSX;
vgmstream->num_samples = read_32bitLE(0x40,streamFile)/16/channel_count*28;
if (loop_flag) {
vgmstream->loop_start_sample = read_32bitLE(0x44,streamFile);
vgmstream->loop_end_sample = read_32bitLE(0x48,streamFile);
}
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = read_8bit(0x39,streamFile); // just a guess, all of my samples seem to be 0x10 interleave
vgmstream->meta_type = meta_PS3_SGX;
/* open the file for reading */
{
int i;
STREAMFILE * file;
file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!file) goto fail;
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].streamfile = file;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=start_offset+
vgmstream->interleave_block_size*i;
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
开发者ID:Paxxi，项目名称:audiodecoder.vgmstream，代码行数:60，代码来源:ps3_sgh_sgb.c
示例2: init_vgmstream_xbox_xmu
VGMSTREAM * init_vgmstream_xbox_xmu(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
int loop_flag=0;
int channel_count;
int i;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("xmu",filename_extension(filename))) goto fail;
if((read_32bitBE(0x00,streamFile)!=0x584D5520) &&
(read_32bitBE(0x08,streamFile)!=0x46524D54))
goto fail;
/* No Loop found atm */
loop_flag = read_8bit(0x16,streamFile);;
/* Always stereo files */
channel_count=read_8bit(0x14,streamFile);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->channels = channel_count;
vgmstream->sample_rate = read_32bitLE(0x10,streamFile);
vgmstream->coding_type = coding_XBOX;
vgmstream->num_samples = read_32bitLE(0x7FC,streamFile) / 36 * 64 / vgmstream->channels;
vgmstream->layout_type = layout_none;
vgmstream->meta_type = meta_XBOX_XMU;
if(loop_flag) {
vgmstream->loop_start_sample=0;
vgmstream->loop_end_sample=vgmstream->num_samples;
}
/* open the file for reading by each channel */
{
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,36);
vgmstream->ch[i].offset = 0x800;
if (!vgmstream->ch[i].streamfile) goto fail;
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
开发者ID:jpmac26，项目名称:PGE-Project，代码行数:57，代码来源:xbox_xmu.c
示例3: decode_hevag
/**
* Sony's HEVAG (High Efficiency VAG) ADPCM, used in PSVita games (hardware decoded).
* Evolution of the regular VAG (same flags and frames), uses 4 history samples and a bigger table.
*
* Original research and algorithm by id-daemon / daemon1.
*/
void decode_hevag(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
uint8_t predict_nr, shift, flag, byte;
int32_t scale = 0;
int32_t sample;
int32_t hist1 = stream->adpcm_history1_32;
int32_t hist2 = stream->adpcm_history2_32;
int32_t hist3 = stream->adpcm_history3_32;
int32_t hist4 = stream->adpcm_history4_32;
int i, sample_count;
int framesin = first_sample / 28;
/* 4 byte header: predictor = 3rd and 1st, shift = 2nd, flag = 4th */
byte = (uint8_t)read_8bit(stream->offset+framesin*16+0,stream->streamfile);
predict_nr = byte >> 4;
shift = byte & 0x0f;
byte = (uint8_t)read_8bit(stream->offset+framesin*16+1,stream->streamfile);
predict_nr = (byte & 0xF0) | predict_nr;
flag = byte & 0x0f; /* no change in flags */
first_sample = first_sample % 28;
if (first_sample & 1) { /* if first sample is odd, read byte first */
byte = read_8bit(stream->offset+(framesin*16)+2+first_sample/2,stream->streamfile);
}
for (i = first_sample, sample_count = 0; i < first_sample + samples_to_do; i++, sample_count += channelspacing) {
sample = 0;
if (flag < 7 && predict_nr < 128) {
if (i & 1) {/* odd/even nibble */
scale = byte >> 4;
} else {
byte = read_8bit(stream->offset+(framesin*16)+2+i/2,stream->streamfile);
scale = byte & 0x0f;
}
if (scale > 7) { /* sign extend */
scale = scale - 16;
}
sample = (hist1 * HEVAG_coefs[predict_nr][0] +
hist2 * HEVAG_coefs[predict_nr][1] +
hist3 * HEVAG_coefs[predict_nr][2] +
hist4 * HEVAG_coefs[predict_nr][3] ) / 32;
sample = (sample + (scale << (20 - shift)) + 128) >> 8;
}
开发者ID:benladen，项目名称:vgmstream，代码行数:57，代码来源:psv_decoder.c
示例4: init_vgmstream_ss_stream
VGMSTREAM * init_vgmstream_ss_stream(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[260];
int loop_flag=0;
int channel_count;
int i;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("ss7",filename_extension(filename))) goto fail;
loop_flag = 0;
channel_count=read_8bit(0x0C,streamFile)+1;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->channels = channel_count;
vgmstream->sample_rate = 44100;
if(channel_count==1)
vgmstream->coding_type = coding_IMA;
else
vgmstream->coding_type = coding_EACS_IMA;
vgmstream->num_samples = (int32_t)((get_streamfile_size(streamFile) -0x44)* 2 / vgmstream->channels);
vgmstream->layout_type = layout_none;
vgmstream->meta_type = meta_XBOX_WAVM;
vgmstream->get_high_nibble=0;
/* open the file for reading by each channel */
{
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,36);
vgmstream->ch[i].offset = 0x44;
vgmstream->ch[i].adpcm_history1_32=(int32_t)read_16bitLE(0x10+i*4,streamFile);
vgmstream->ch[i].adpcm_step_index =(int)read_8bit(0x12+i*4,streamFile);
if (!vgmstream->ch[i].streamfile) goto fail;
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
开发者ID:1c0n，项目名称:xbmc，代码行数:51，代码来源:ss_stream.c
示例5: readPatch
uint32_t readPatch(STREAMFILE* streamFile, off_t* offset) {
uint32_t result=0;
uint8_t byteCount;
byteCount = read_8bit(*offset,streamFile);
(*offset)++;
for(;byteCount>0;byteCount--) {
result <<=8;
result+=(uint8_t)read_8bit(*offset,streamFile);
(*offset)++;
}
return result;
}
开发者ID:1c0n，项目名称:xbmc，代码行数:15，代码来源:ea_header.c
示例6: get_streamfile_dos_line
/* Read a line into dst. The source files are MS-DOS style,
* separated (not terminated) by CRLF. Return 1 if the full line was
* retrieved (if it could fit in dst), 0 otherwise. In any case the result
* will be properly terminated. The CRLF will be removed if there is one.
* Return the number of bytes read (including CRLF line ending). Note that
* this is not the length of the string, and could be larger than the buffer.
* *line_done_ptr is set to 1 if the complete line was read into dst,
* otherwise it is set to 0. line_done_ptr can be NULL if you aren't
* interested in this info.
*/
size_t get_streamfile_dos_line(int dst_length, char * dst, off_t offset,
STREAMFILE * infile, int *line_done_ptr)
{
int i;
off_t file_length = get_streamfile_size(infile);
/* how many bytes over those put in the buffer were read */
int extra_bytes = 0;
if (line_done_ptr) *line_done_ptr = 0;
for (i=0;i<dst_length-1 && offset+i < file_length;i++)
{
char in_char = read_8bit(offset+i,infile);
/* check for end of line */
if (in_char == 0x0d &&
read_8bit(offset+i+1,infile) == 0x0a)
{
extra_bytes = 2;
if (line_done_ptr) *line_done_ptr = 1;
break;
}
dst[i]=in_char;
}
dst[i]='\0';
/* did we fill the buffer? */
if (i==dst_length) {
/* did the bytes we missed just happen to be the end of the line? */
if (read_8bit(offset+i,infile) == 0x0d &&
read_8bit(offset+i+1,infile) == 0x0a)
{
extra_bytes = 2;
/* if so be proud! */
if (line_done_ptr) *line_done_ptr = 1;
}
}
/* did we hit the file end? */
if (offset+i == file_length)
{
/* then we did in fact finish reading the last line */
if (line_done_ptr) *line_done_ptr = 1;
}
return i+extra_bytes;
}
开发者ID:9a3eedi，项目名称:Droidsound，代码行数:58，代码来源:streamfile.c
示例7: init_vgmstream_ngc_adpdtk
VGMSTREAM * init_vgmstream_ngc_adpdtk(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
STREAMFILE * chstreamfile;
char filename[PATH_LIMIT];
size_t file_size;
int i;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("adp",filename_extension(filename)) &&
strcasecmp("dtk",filename_extension(filename))) goto fail;
/* file size is the only way to determine sample count */
file_size = get_streamfile_size(streamFile);
/* .adp files have no header, so all we can do is look for a valid first frame */
if (read_8bit(0,streamFile)!=read_8bit(2,streamFile) || read_8bit(1,streamFile)!=read_8bit(3,streamFile)) goto fail;
/* Hopefully we haven't falsely detected something else... */
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(2,0); /* always stereo, no loop */
if (!vgmstream) goto fail;
vgmstream->num_samples = file_size/32*28;
vgmstream->sample_rate = 48000;
vgmstream->coding_type = coding_NGC_DTK;
vgmstream->layout_type = layout_dtk_interleave;
vgmstream->meta_type = meta_NGC_ADPDTK;
/* locality is such that two streamfiles is silly */
chstreamfile = streamFile->open(streamFile,filename,32*0x400);
if (!chstreamfile) goto fail;
for (i=0;i<2;i++) {
vgmstream->ch[i].channel_start_offset =
vgmstream->ch[i].offset = 0;
vgmstream->ch[i].streamfile = chstreamfile;
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
开发者ID:Deinonychus71，项目名称:vgmstream，代码行数:48，代码来源:ngc_adpdtk.c
示例8: TM1650_read
/*******************读按键命令************************/
uchar TM1650_read()
{
uchar key;
TM1650_START();
write_8bit(0x49);//读按键指令
key=read_8bit();
TM1650_STOP();
return key;
}
开发者ID:mwei0321，项目名称:STCode，代码行数:10，代码来源:TM1650.c
示例9: xa_block_update
/* set up for the block at the given offset */
void xa_block_update(off_t block_offset, VGMSTREAM * vgmstream) {
int i;
int8_t currentChannel=0;
int8_t subAudio=0;
init_get_high_nibble(vgmstream);
if(vgmstream->samples_into_block!=0)
// don't change this variable in the init process
vgmstream->xa_sector_length+=128;
// We get to the end of a sector ?
if(vgmstream->xa_sector_length==(18*128)) {
vgmstream->xa_sector_length=0;
// 0x30 of unused bytes/sector :(
block_offset+=0x30;
begin:
// Search for selected channel & valid audio
currentChannel=read_8bit(block_offset-7,vgmstream->ch[0].streamfile);
subAudio=read_8bit(block_offset-6,vgmstream->ch[0].streamfile);
// audio is coded as 0x64
if(!((subAudio==0x64) && (currentChannel==vgmstream->xa_channel))) {
// go to next sector
block_offset+=2352;
if(currentChannel!=-1) goto begin;
}
}
vgmstream->current_block_offset = block_offset;
// Quid : how to stop the current channel ???
// i set up 0 to current_block_size to make vgmstream not playing bad samples
// another way to do it ???
// (as the number of samples can be false in cd-xa due to multi-channels)
vgmstream->current_block_size = (currentChannel==-1?0:112);
vgmstream->next_block_offset = vgmstream->current_block_offset+128;
for (i=0;i<vgmstream->channels;i++) {
vgmstream->ch[i].offset = vgmstream->current_block_offset;
}
}
开发者ID:1c0n，项目名称:xbmc，代码行数:45，代码来源:xa_blocked.c
示例10: init_vgmstream_ngc_adpdtk
VGMSTREAM * init_vgmstream_ngc_adpdtk(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
off_t start_offset = 0;
int channel_count = 2, loop_flag = 0; /* always stereo, no loop */
/* check extension, case insensitive */
if ( !check_extensions(streamFile,"dtk,adp"))
goto fail;
/* .adp files have no header, and the ext is common, so all we can do is look for valid first frames */
if (check_extensions(streamFile,"adp")) {
int i;
for (i = 0; i < 10; i++) { /* try a bunch of frames */
if (read_8bit(0x00 + i*0x20,streamFile) != read_8bit(0x02 + i*0x20,streamFile) ||
read_8bit(0x01 + i*0x20,streamFile) != read_8bit(0x03 + i*0x20,streamFile))
goto fail;
}
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count, loop_flag);
if (!vgmstream) goto fail;
vgmstream->num_samples = get_streamfile_size(streamFile) / 32 * 28;
vgmstream->sample_rate = 48000;
vgmstream->coding_type = coding_NGC_DTK;
vgmstream->layout_type = layout_none;
vgmstream->meta_type = meta_NGC_ADPDTK;
/* open the file for reading */
if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
开发者ID:benladen，项目名称:vgmstream，代码行数:41，代码来源:ngc_adpdtk.c
示例11: init_xa_channel
off_t init_xa_channel(int* channel,STREAMFILE* streamFile) {
off_t block_offset=0x44;
size_t filelength=get_streamfile_size(streamFile);
int8_t currentChannel;
int8_t subAudio;
// 0 can't be a correct value
if(block_offset>=(off_t)filelength)
return 0;
currentChannel=read_8bit(block_offset-7,streamFile);
subAudio=read_8bit(block_offset-6,streamFile);
*channel=currentChannel;
//if (!((currentChannel==channel) && (subAudio==0x64))) {
// block_offset+=2352;
// goto begin;
//}
return block_offset;
}
开发者ID:Sappharad，项目名称:modizer，代码行数:21，代码来源:psx_cdxa.c
示例12: decode_ngc_dsp
void decode_ngc_dsp(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
int i=first_sample;
int32_t sample_count;
int framesin = first_sample/14;
int8_t header = read_8bit(framesin*8+stream->offset,stream->streamfile);
int32_t scale = 1 << (header & 0xf);
int coef_index = (header >> 4) & 0xf;
int32_t hist1 = stream->adpcm_history1_16;
int32_t hist2 = stream->adpcm_history2_16;
int coef1 = stream->adpcm_coef[coef_index*2];
int coef2 = stream->adpcm_coef[coef_index*2+1];
first_sample = first_sample%14;
for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
int sample_byte = read_8bit(framesin*8+stream->offset+1+i/2,stream->streamfile);
#ifdef DEBUG
if (hist1==stream->loop_history1 && hist2==stream->loop_history2) fprintf(stderr,"yo! %#x (start %#x) %d\n",stream->offset+framesin*8+i/2,stream->channel_start_offset,stream->samples_done);
stream->samples_done++;
#endif
outbuf[sample_count] = clamp16((
(((i&1?
get_low_nibble_signed(sample_byte):
get_high_nibble_signed(sample_byte)
) * scale)<<11) + 1024 +
(coef1 * hist1 + coef2 * hist2))>>11
);
hist2 = hist1;
hist1 = outbuf[sample_count];
}
stream->adpcm_history1_16 = hist1;
stream->adpcm_history2_16 = hist2;
}
开发者ID:1c0n，项目名称:xbmc，代码行数:39，代码来源:ngc_dsp_decoder.c
示例13: init_vgmstream_ps2_omu
// OMU is a PS2 .INT file with header ...
// found in Alter Echo
VGMSTREAM * init_vgmstream_ps2_omu(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[1024];
int i,channel_count;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("omu",filename_extension(filename))) goto fail;
/* check header */
if((read_32bitBE(0,streamFile)!=0x4F4D5520) && (read_32bitBE(0x08,streamFile)!=0x46524D54))
goto fail;
channel_count = (int)read_8bit(0x14,streamFile);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,1);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->channels=channel_count;
vgmstream->sample_rate = read_32bitLE(0x10,streamFile);
vgmstream->coding_type = coding_PCM16LE;
vgmstream->num_samples = (int32_t)(read_32bitLE(0x3C,streamFile)/(vgmstream->channels*2));
vgmstream->interleave_block_size = 0x200;
vgmstream->layout_type = layout_interleave;
vgmstream->meta_type = meta_PS2_OMU;
vgmstream->loop_start_sample=0;
vgmstream->loop_end_sample=vgmstream->num_samples;
/* open the file for reading by each channel */
{
for (i=0;i<vgmstream->channels;i++) {
vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,0x8000);
if (!vgmstream->ch[i].streamfile) goto fail;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=0x40+(i*vgmstream->interleave_block_size);
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
开发者ID:Sappharad，项目名称:modizer，代码行数:52，代码来源:ps2_int.c
示例14: decode_sdx2_int
void decode_sdx2_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
int32_t hist = stream->adpcm_history1_32;
int i;
int32_t sample_count;
for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
int8_t sample_byte = read_8bit(stream->offset+i*channelspacing,stream->streamfile);
int16_t sample;
if (!(sample_byte & 1)) hist = 0;
sample = hist + squares[sample_byte+128];
hist = outbuf[sample_count] = clamp16(sample);
}
stream->adpcm_history1_32=hist;
}
开发者ID:1c0n，项目名称:xbmc，代码行数:18，代码来源:sdx2_decoder.c
示例15: read_string
/* reads a c-string, up to maxsize or NULL, returning size. buf is optional. */
int read_string(char * buf, size_t maxsize, off_t offset, STREAMFILE *streamFile) {
int i;
for (i=0; i < maxsize; i++) {
char c = read_8bit(offset + i, streamFile);
if (buf) buf[i] = c;
if (c == '\0')
return i;
if (i+1 == maxsize) { /* null at maxsize and don't validate (expected to be garbage) */
if (buf) buf[i] = '\0';
return maxsize;
}
if (c < 0x20 || c > 0xA5)
goto fail;
}
fail:
if (buf) buf[0] = '\0';
return 0;
}
开发者ID:soneek，项目名称:vgmstream，代码行数:21，代码来源:streamfile.c
示例16: init_vgmstream_pc_ast
/* ASTL - found in Dead Rising (PC) */
VGMSTREAM * init_vgmstream_pc_ast(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
off_t start_offset, data_size;
int loop_flag, channel_count;
/* check extension, case insensitive */
if ( !check_extensions(streamFile,"ast"))
goto fail;
if (read_32bitBE(0x00,streamFile) != 0x4153544C) /* "ASTL" */
goto fail;
loop_flag = 0; //TODO - Find hidden loop point calc and flag
channel_count = read_8bit(0x32, streamFile);
data_size = read_32bitLE(0x20,streamFile);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* TODO - Find non-obvious loop points and flag (if any) */
start_offset = read_32bitLE(0x10,streamFile);
vgmstream->sample_rate = read_32bitLE(0x34,streamFile);
vgmstream->coding_type = coding_PCM16LE;
vgmstream->num_samples = data_size/(channel_count*2);
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x2;
vgmstream->meta_type = meta_PC_AST;
/* open the file for reading */
if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
goto fail;
return vgmstream;
fail:
close_vgmstream(vgmstream);
return NULL;
}
开发者ID:benladen，项目名称:vgmstream，代码行数:41，代码来源:pc_ast.c
示例17: decode_derf
/* Xilam DERF DPCM for Stupid Invaders (PC), decompiled from the exe */
void decode_derf(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
int i, sample_pos = 0, index;
int32_t hist = stream->adpcm_history1_32;
off_t frame_offset = stream->offset; /* frame size is 1 */
for(i = first_sample; i < first_sample + samples_to_do; i++) {
uint8_t code = (uint8_t)read_8bit(frame_offset+i,stream->streamfile);
/* original exe doesn't clamp the index, so presumably codes can't over it */
index = code & 0x7f;
if (index > 95) index = 95;
if (code & 0x80)
hist -= derf_steps[index];
else
hist += derf_steps[index];
outbuf[sample_pos] = clamp16(hist);
sample_pos += channelspacing;
}
stream->adpcm_history1_32 = hist;
}
开发者ID:kode54，项目名称:vgmstream，代码行数:24，代码来源:derf_decoder.c
示例18: Paradise
/* VAWX
- No More Heroes: Heroes Paradise (PS3)
*/
VGMSTREAM * init_vgmstream_ps3_vawx(STREAMFILE *streamFile)
{
VGMSTREAM * vgmstream = NULL;
char filename[260];
off_t start_offset;
int loop_flag = 0;
int channel_count;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("vawx",filename_extension(filename))) goto fail;
/* check header */
if (read_32bitBE(0x00,streamFile) != 0x56415758) // "VAWX"
goto fail;
if (read_8bit(0xF,streamFile) == 2)
{
loop_flag = 1;
}
channel_count = read_8bit(0x39,streamFile);;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
start_offset = 0x800;
vgmstream->channels = channel_count;
vgmstream->sample_rate = read_32bitBE(0x40,streamFile);
vgmstream->coding_type = coding_PSX;
vgmstream->num_samples = ((get_streamfile_size(streamFile)-start_offset)/16/channel_count*28);
if (loop_flag)
{
vgmstream->loop_start_sample = read_32bitBE(0x44,streamFile);
vgmstream->loop_end_sample = read_32bitBE(0x48,streamFile);;
}
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x10;
vgmstream->meta_type = meta_PS3_VAWX;
/* open the file for reading */
{
int i;
STREAMFILE * file;
file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!file) goto fail;
for (i=0;i<channel_count;i++)
{
vgmstream->ch[i].streamfile = file;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=start_offset + (vgmstream->interleave_block_size * i);
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
开发者ID:Paxxi，项目名称:audiodecoder.vgmstream，代码行数:74，代码来源:ps3_vawx.c
示例19: init_vgmstream_ps2_gbts
VGMSTREAM * init_vgmstream_ps2_gbts(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[PATH_LIMIT];
int loop_flag=0;
int channel_count;
off_t start_offset;
off_t loopStart = 0;
off_t loopEnd = 0;
size_t filelength;
int i;
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
if (strcasecmp("gbts",filename_extension(filename))) goto fail;
/* check loop */
start_offset=0x801;
filelength = get_streamfile_size(streamFile);
do {
// Loop Start ...
if(read_8bit(start_offset,streamFile)==0x06) {
if(loopStart==0) loopStart = start_offset-0x801;
}
// Loop End ...
if(read_8bit(start_offset,streamFile)==0x03) {
if(loopEnd==0) loopEnd = start_offset-0x801-0x10;
}
start_offset+=0x10;
} while (start_offset<(int32_t)filelength);
loop_flag = (loopEnd!=0);
channel_count=read_32bitLE(0x1C,streamFile);
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->channels = channel_count;
vgmstream->sample_rate = read_32bitLE(0x18,streamFile);;
/* Check for Compression Scheme */
vgmstream->coding_type = coding_PSX;
vgmstream->num_samples = read_32bitLE(0x0C,streamFile)/16*28/vgmstream->channels;
vgmstream->interleave_block_size = 0x10;
/* Get loop point values */
if(vgmstream->loop_flag) {
vgmstream->loop_start_sample = (loopStart/(vgmstream->interleave_block_size)*vgmstream->interleave_block_size)/16*28;
vgmstream->loop_start_sample += (loopStart%vgmstream->interleave_block_size)/16*28;
vgmstream->loop_start_sample /=vgmstream->channels;
vgmstream->loop_end_sample = (loopEnd/(vgmstream->interleave_block_size)*vgmstream->interleave_block_size)/16*28;
vgmstream->loop_end_sample += (loopEnd%vgmstream->interleave_block_size)/16*28;
vgmstream->loop_end_sample /=vgmstream->channels;
}
vgmstream->layout_type = layout_interleave;
vgmstream->meta_type = meta_PS2_GBTS;
start_offset = (off_t)0x800;
/* open the file for reading by each channel */
{
for (i=0;i<channel_count;i++) {
vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,vgmstream->interleave_block_size);
if (!vgmstream->ch[i].streamfile) goto fail;
vgmstream->ch[i].channel_start_offset=
vgmstream->ch[i].offset=
(off_t)(start_offset+vgmstream->interleave_block_size*i);
}
}
return vgmstream;
/* clean up anything we may have opened */
fail:
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
开发者ID:jpmac26，项目名称:PGE-Project，代码行数:87，代码来源:ps2_gbts.c
示例20: init_vgmstream_g1l
VGMSTREAM * init_vgmstream_g1l(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
char filename[260];
coding_t coding_type;
off_t head_offset;
int channel_count;
int loop_flag;
off_t start_offset;
/* check extension, case insensitive */
streamFile->get_name(streamFile, filename, sizeof(filename));
if (strcasecmp("g1l", filename_extension(filename)))
goto fail;
/* check header */
if ((uint32_t)read_32bitBE(0, streamFile) != 0x47314C5F) /* "G1L_" */
goto fail;
if ((uint32_t)read_32bitBE(0x1c, streamFile) != 0x57696942) /* "WiiB" */
goto fail;
/* check type details */
// loop_flag = read_8bit(head_offset + 0x21, streamFile);
if (read_32bitBE(0x30, streamFile) > 0)
loop_flag = 1;
else
loop_flag = 0;
channel_count = read_8bit(0x3f, streamFile);
coding_type = coding_NGC_DSP;
if (channel_count < 1) goto fail;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count, loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->num_samples = read_32bitBE(0x2c, streamFile);
vgmstream->sample_rate = (uint16_t)read_16bitBE(0x42, streamFile);
/* channels and loop flag are set by allocate_vgmstream */
vgmstream->loop_start_sample = read_32bitBE(0x30, streamFile);
vgmstream->loop_end_sample = vgmstream->num_samples;
vgmstream->coding_type = coding_type;
if (channel_count == 1)
vgmstream->layout_type = layout_none;
vgmstream->layout_type = layout_interleave_byte;
vgmstream->meta_type = meta_G1L;
vgmstream->interleave_block_size = 0x1;
if (vgmstream->coding_type == coding_NGC_DSP) {
off_t coef_offset = 0x78;
int i, j;
int coef_spacing = 0x60;
for (j = 0; j<vgmstream->channels; j++) {
for (i = 0; i<16; i++) {
vgmstream->ch[j].adpcm_coef[i] = read_16bitBE(coef_offset + j*coef_spacing + i * 2, streamFile);
}
}
}
if (vgmstream->coding_type == coding_NGC_DSP)
start_offset = 0x81c;
else // Will add AT3 G1L support later
goto fail;
/* open the file for reading by each channel */
{
int i;
for (i = 0; i<channel_count; i++) {
if (vgmstream->layout_type == layout_interleave_shortblock)
vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename,
vgmstream->interleave_block_size);
else if (vgmstream->layout_type == layout_interleave)
vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename,
STREAMFILE_DEFAULT_BUFFER_SIZE);
else
vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename,
0x1000);
if (!vgmstream->ch[i].streamfile) goto fail;
vgmstream->ch[i].channel_start_offset =
//.........这里部分代码省略.........
开发者ID:Paxxi，项目名称:audiodecoder.vgmstream，代码行数:101，代码来源:g1l.c
注：本文中的read_8bit函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
客服电话
APP下载
官方微信
请发表评论