search for: cbit

Displaying 20 results from an estimated 80 matches for "cbit".

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2008 Mar 14
2
bitreader optimizations
...eft to read to finish a rice codeword */ - /* try and get br->consumed_words and br->consumed_bits into register; * must remember to flush them back to *br before calling other - * bitwriter functions that use them, and before returning */ - register unsigned cwords; - register unsigned cbits; + * bitreader functions that use them, and before returning */ + unsigned cwords, words, lsbs, msbs, x, y; + unsigned ucbits; /* keep track of the number of unconsumed bits in word */ + brword b; + int *val, *end; FLAC__ASSERT(0 != br); FLAC__ASSERT(0 != br->buffer); /* WATCHOUT: code...
2012 May 04
0
[PATCH] Optimize FLAC__bitreader_read_rice_signed
...eft to read to finish a rice codeword */ - /* try and get br->consumed_words and br->consumed_bits into register; * must remember to flush them back to *br before calling other - * bitwriter functions that use them, and before returning */ - register unsigned cwords; - register unsigned cbits; + * bitreader functions that use them, and before returning */ + unsigned cwords, words, lsbs, msbs, x, y; + unsigned ucbits; /* keep track of the number of unconsumed bits in word */ + uint32_t b; + int *val, *end; FLAC__ASSERT(0 != br); FLAC__ASSERT(0 != br->buffer); /* WATCHOUT: co...
2008 Mar 17
0
bitreader optimizations
...eft to read to finish a rice codeword */ - /* try and get br->consumed_words and br->consumed_bits into register; * must remember to flush them back to *br before calling other - * bitwriter functions that use them, and before returning */ - register unsigned cwords; - register unsigned cbits; + * bitreader functions that use them, and before returning */ + unsigned cwords, words, lsbs, msbs, x, y; + unsigned ucbits; /* keep track of the number of unconsumed bits in word */ + brword b; + int *val, *end; FLAC__ASSERT(0 != br); FLAC__ASSERT(0 != br->buffer); /* WATCHOUT: code...
2012 Aug 28
3
[PATCH 1/3] Make FLAC__clz_soft_uint32 static.
--- src/libFLAC/include/private/bitmath.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/libFLAC/include/private/bitmath.h b/src/libFLAC/include/private/bitmath.h index 61b0e03..d32b1a7 100644 --- a/src/libFLAC/include/private/bitmath.h +++ b/src/libFLAC/include/private/bitmath.h @@ -42,7 +42,7 @@ #endif /* Will never be emitted for MSVC, GCC, Intel compilers */
2004 Sep 10
4
bitbuffer optimizations
...xffff ? byte_to_unary_table[(blurb) >> 8] + 16 : ((blurb) <= 0xffffff ? byte_to_unary_table[(blurb) >> 16] + 8 : byte_to_unary_table[(blurb) >> 24]))) #else /* ERROR, only sizes of 8 and 32 are supported */ #endif @@ -2090,114 +2111,16 @@ if(nvals == 0) return true; + cbits = bb->consumed_bits; i = bb->consumed_blurbs; - /* - * We unroll the main loop to take care of partially consumed blurbs here. - */ - if(bb->consumed_bits > 0) { - save_blurb = blurb = buffer[i]; - cbits = bb->consumed_bits; - blurb <<= cbits; - - while(1) { - if(sta...
2005 Jan 01
2
libFLAC bitbuffer optimizations
...ry_table[(blurb) >> 8] + 16 \ + : ((blurb) <=0xffffff \ + ? byte_to_unary_table[(blurb) >> 16] + 8 \ + : byte_to_unary_table[(blurb) >> 24]))) #else /* ERROR, only sizes of 8 and 32 are supported */ #endif @@ -2109,114 +2135,18 @@ if(nvals == 0) return true; + cbits = bb->consumed_bits; i = bb->consumed_blurbs; - /* - * We unroll the main loop to take care of partially consumed blurbs here. - */ - if(bb->consumed_bits > 0) { - save_blurb = blurb = buffer[i]; - cbits = bb->consumed_bits; - blurb <<= cbits; - - while(1) { - if(sta...
2004 Dec 28
2
libFLAC bitbuffer optimizations
Pulled from my Arch archive, this following patch seems to have made quite a difference in getting my ARM7TDMI chip to play FLAC (compression levels 0-2) on my ipod. I don't have benchmarks with hard numbers, but playing with skips vs playing without skips is a fairly noticeable difference. memcpy and memset on uClibc are optimized in asm for the ARM7TDMI in uClibc. Other hardware/libc
2011 Nov 17
1
Just getting noise
..., size_t& outputSize) { speex_bits_reset(&mBits); speex_encode_int(mState, (Enigma::s16*)inputBuffer, &mBits); speex_bits_insert_terminator(&mBits); outputSize = speex_bits_nbytes(&mBits); /*Copy the bits to an array of char that can be written*/ Enigma::u8* cbits = new Enigma::u8[outputSize](); speex_bits_write(&mBits, (char*)cbits, outputSize); return cbits; } virtual Enigma::u8* Decode(Enigma::u8* inputBuffer,size_t inputSize, size_t& outputSize) { speex_bits_reset(&mBits); speex_bits_read_from(&mBits, (char*)inputBuff...
2005 Dec 06
1
problems decoding speex... please help
...g to decode speex using version 1.1.10's libspeex with fixed_point enabled. copied the sample in the manual (1.1.11) with minor revisions. While running the program, encountered this warning: "Packet is larger than allocated buffer : 38" when calling speex_bits_read_from (&bits, cbits, nBytes) then my program terminated unexpectedly with errors (Unhandled exception at 0x10225e1f ( msvcr80d.dll) in sampleDEC.exe: 0xC0000005: Access violation reading location 0x645c3a63.) I declared cbits as char *cbits [500]. nBytes is 38, bit rate is 15000 bps. I'm decoding a 'speex...
2004 Aug 06
1
About reducing noise..
...fer // convert to short for ( int i = 0; i < FRAME_SIZE; i++) in[i] = out_buffer[i]; speex_bits_reset(&bits); // encode speex_encode ( state, in, &bits); // copy bits to an array of chars nbBytes = speex_bits_write ( &bits, cbits, 200); // copy these cbits into a buffer CopyBuffer(pBuffer + dwLength, cbits, nbBytes); dwLength += nbBytes; } // uninitialize For decoding . SpeexBits bits; int i, tmp; state = speex_decoder_init(&speex_nb_mode); tmp =1; speex_decoder_ctl(state, SPEEX_SET_ENH, &am...
2011 Nov 16
2
Just getting noise
...; for (i=0;i<(inputSize/2);i++) { input[i]=in[i]; } /*Flush all the bits in the struct so we can encode a new frame*/ speex_bits_reset(&mBits); /*Encode the frame*/ speex_encode(mState, input, &mBits); nbBytes = speex_bits_nbytes(&mBits); char* cbits = new char[nbBytes](); /*Copy the bits to an array of char that can be written*/ nbBytes = speex_bits_write(&mBits, cbits, nbBytes); outputSize=nbBytes; delete[] input; return (Enigma::u8*)cbits; } virtual Enigma::u8* Decode(Enigma::u8* inputBuffer,size_t inputSize,...
2005 Oct 17
6
Error Executing sampledec in VC++
...ex_nb_mode); // Set default options for decoding: temp = 1; speex_decoder_ctl(decstate, SPEEX_SET_ENH, &temp); // Initialize spxbits (structure SpeexBits) speex_bits_init (&spxbits); while (!(feof(fo))) // this is where the problem starts { fread (&nbBytes, sizeof(int), 1, fo); fread (cbits, 1, nbBytes, fo); cout << "1"; // just to see whether the loop iterates speex_bits_read_from (&spxbits, cbits, nbBytes); speex_decode (decstate, &spxbits, pcm); // Copy 1 frame from float pcm to short spx for (n=0; n<FRAME_SIZE; n++) spx [n] = pcm [n]; fwrite (spx,...
2004 Aug 06
2
decode in ppc 2003
...e[]="test.spx"; char outfile[]="test.wav"; char *outFile; char *inFile; FILE *fout; // output file FILE *fin; // input file short out[FRAME_SIZE]; short output[FRAME_SIZE]; char cbits[200]; int nbBytes; void *state; SpeexBits bits; int i, tmp; state = speex_decoder_init(&speex_nb_mode); tmp=1; speex_decoder_ctl(state, SPEEX_SET_ENH, &tmp); outFile = outfile;...
2004 Aug 06
1
decode in ppc 2003
Hi, My problem is at the second fread function, fread(&nbBytes, sizeof(int), 1, fin); //the first fread fread(cbits,1, nbBytes, fin);// the second fread. When I'm debugging always nbytes is greater than cbits. This give me a execution error. Thanks. Rodrigo. <p><p><p>-----Mensaje original----- De: owner-speex-dev@xiph.org [mailto:owner-speex-dev@xiph.org] En nombre de Jean-Marc Valin En...
2011 Dec 22
2
Decoding only a certain frame results in different values than when decoding the entire file
...le; //FILE *ftest; //testFile = "test"; //ftest = fopen(testFile, "wb"); //fwrite(inBuf,1,inlen,ftest); //take every 320 bytes //copy every short to float array, and make sure to put null in unused area float input[MAX_FRAME_SIZE]; char cbits[MAX_FRAME_BYTES]; unsigned int inBufpos = 0, j, outBufpos = 0; short *sinBuf; sinBuf = (short*) inBuf; do { j = 0; do { //copy to float array input[j] = sinBuf[inBufpos]; inBufpos++; j++;...
2006 Oct 12
1
Problem with encoding and decoding
...#include <sys/soundcard.h> /*The frame size in hardcoded for this sample code but it doesn't have to be*/ #define FRAME_SIZE 160 #define false -1 int card; int main(int argc, char **argv) { //char *inFile; FILE *fin; short in[FRAME_SIZE]; float input[FRAME_SIZE]; char cbits[200]; int nbBytes; /*Holds the state of the encoder*/ void *state; /*Holds bits so they can be read and written to by the Speex routines*/ SpeexBits bits; int i, tmp; char file[100]; int channels,format; while (argc>1){ argc--; argv++; if(...
2005 Oct 17
3
Error Executing sampledec in VC++
...t I read a file stream instead of stdin) #include "speex/speex.h" #include <stdio.h> #include <iostream.h> void main () { // Definitions #define FRAME_SIZE 160 #define FIXED_POINT // Variable Declarations FILE *fo, *fs; short spx [FRAME_SIZE]; float pcm [FRAME_SIZE]; char cbits [200]; int nbBytes, n, temp; void *decstate; SpeexBits spxbits; // Program starts here: cout << "Starting spxdec...\n"; fo = fopen("samp.spx","rb"); if (fo == NULL) cout << "Error!\n"; else cout << "Okay!\n"; fs = fopen (&quo...
2007 Feb 13
1
Hello Guys
...===== #include "speex.h" #include <stdio.h> /*The frame size in hardcoded for this sample code but it doesn't have to be*/ #define FRAME_SIZE 160 int main(int argc, char **argv) { char *inFile; FILE *fin; FILE *fout; short in[FRAME_SIZE]; float input[FRAME_SIZE]; char cbits[200]; int nbBytes; /*Holds the state of the encoder*/ void *state; /*Holds bits so they can be read and written to by the Speex routines*/ SpeexBits bits; int i, tmp; /*Create a new encoder state in narrowband mode*/ state = speex_encoder_init(&speex_nb_mode); /*Set the quality to 8 (...
2011 Nov 16
2
Just getting noise
...s in the struct so we can encode a new frame*/ ? ? ? ? ? ? ? ? ? ? ? ?speex_bits_reset(&bits); ? ? ? ? ? ? ? ? ? ? ? ?/*Encode the frame*/ ? ? ? ? ? ? ? ? ? ? ? ?speex_encode(state, input, &bits); ? ? ? ? ? ? ? ? ? ? ? ?nbBytes = speex_bits_nbytes(&bits); ? ? ? ? ? ? ? ? ? ? ? ?char* cbits = new char[nbBytes](); ? ? ? ? ? ? ? ? ? ? ? ?/*Copy the bits to an array of char that can be written*/ ? ? ? ? ? ? ? ? ? ? ? ?nbBytes = speex_bits_write(&bits, cbits, nbBytes); ? ? ? ? ? ? ? ? ? ? ? ?/*Destroy the encoder state*/ ? ? ? ? ? ? ? ? ? ? ? ?speex_encoder_destroy(state); ? ? ? ?...
2012 Mar 14
0
Audio file is corrupted after decoding
...artDm_ISmartDMActivity_spxEnc(JNIEnv * env, jobject jobj,jstring dir1,jstring dir2) { const char *inFile= (*env)->GetStringUTFChars(env,dir1,0); const char *outFile= (*env)->GetStringUTFChars(env,dir2,0); FILE *fin; FILE *fout; short in[FRAME_SIZE]; float input[FRAME_SIZE]; char cbits[360]; int nbBytes; void *state; SpeexBits bits; int i, tmp; state = speex_encoder_init(&speex_wb_mode); tmp=8; speex_encoder_ctl(state, SPEEX_SET_QUALITY, &tmp); fin = fopen(inFile, "r"); fout=fopen(outFile,"w"); speex_bits_init(&bits)...