search for: max_chars_per_frame

...ould have enough processing power and I compiled the lib and it seems to take less then 64K so the only issue is memory usage. I have been testing the speex decode on windows looking at the stack usage and how much is malloc. There appear to be three defines that control much of the memory usage: MAX_CHARS_PER_FRAME , SB_DEC_STACK and NB_DEC_STACK. I have tested lowering these values and then running the speexdec program and looking for errors. By trial and error it appears that I can lower MAX_CHARS_PER_FRAME = 750, SB_DEC_STACK = 750*sizeof(spx_sig_t) and NB_DEC_STACK = 250*sizeof(spx_sig_t) and not ge...

...ng power > and I compiled the lib and it seems to take less then 64K so the only > issue is memory usage. I have been testing the speex decode on > windows looking at the stack usage and how much is malloc. There > appear to be three defines that control much of the memory usage: > MAX_CHARS_PER_FRAME , SB_DEC_STACK and NB_DEC_STACK. MAX_CHARS_PER_FRAME is different from the others. It's a sort of shortcut to remove the need to resize the bit-packer buffer. If you know what you're going to decode, supply your own buffer or can live with realloc() calls, then you can ignore/reduce that...

...;> multichannel application. There have been some good posts over the >> last couple of months about reducing memory usage. > > I think 1.1.8 incorporates all memory reductions proposed. Let me know > otherwise. For the persistent storage, the only change that I have made is to MAX_CHARS_PER_FRAME, which is set to 2000 in bits.c. I changed bits.c to set this value only if it was not already defined, and then put my own, much smaller value in config.h. For the scratch stack, I replace the fixed values in nb_encoder_init and nb_decoder_init with constants that I defined in config.h. Jame...

Hi, Just a couple tips to reduce complexity. First, I think you'd get a good speedup by enabling the PRECISION16 switch (if it's not done already). This (very) slightly reduces quality, but means you convert a lot of "emulated" 16x32 multiplications into 16x16. There are also several routines that would benefit from platform-specific optimizations. There are already

> > I have tested lowering these values and then running the speexdec > > program and looking for errors. By trial and error it appears that I > > can lower MAX_CHARS_PER_FRAME = 750, SB_DEC_STACK = > > 750*sizeof(spx_sig_t) and NB_DEC_STACK = 250*sizeof(spx_sig_t) > > and not get any memory errors but have no idea if these are safe > > values or not. I could not tell how much stack spaced was used but > > would guess 4 kb would be enough. A...

...s fixed point TI DSPs after the work that you did at the end of May (thank you for this). arch.h: Add switch for compilers not supporting "long long" (C55x does, C54x and older C64x does not) bits.c: Allow external definition for max buffer size, change MAX_BYTES_PER_FRAME to MAX_CHARS_PER_FRAME for consistency misc.c: Added override switches to alloc routines, conditional include of user file changes to allow manual memory allocation rather than using heap Note that none of these changes are necessary to get Speex to run on C55x. The arch.h change allows operation with older ve...

...using the DSP), it works fine. I don't know where that clicking noise is coming from. Any advice/comments/suggestions? Here's what's included in my config.h file for Speex (compiled with -DCONFIG_TI_C6X): #define FIXED_POINT #define FRAME_SIZE 160 #define DISABLE_WIDEBAND #define MAX_CHARS_PER_FRAME (42/BYTES_PER_CHAR) #define MANUAL_ALLOC #define USER_MISC Speex narrow band parameters I'm using: Quality: 2 /* 5950 bps */ Enhancement: 0 Vbr: disabled Complexity: 1 The DaVinci processor is relatively new and I can't seem to find anyone who has successfully used Spee...

...don't know where that clicking noise is coming from. Any advice/comments/suggestions? > > Here's what's included in my config.h file for Speex (compiled with -DCONFIG_TI_C6X): > > #define FIXED_POINT > #define FRAME_SIZE 160 > #define DISABLE_WIDEBAND > #define MAX_CHARS_PER_FRAME (42/BYTES_PER_CHAR) > #define MANUAL_ALLOC > #define USER_MISC > > Speex narrow band parameters I'm using: > Quality: 2 /* 5950 bps */ > Enhancement: 0 > Vbr: disabled > Complexity: 1 > > The DaVinci processor is relatively new and I can't...

...ll reaching Quality 8 where I can hear nothing but annoying noise - When I decode a file encoded on my PC (using speex utility with the same config of my encoder) it sounds great. So I suppose the issue might be on my encoder side. - I'm using fixed point configuration, and I updated the MAX_CHARS_PER_FRAME value to 80 (I guess I'd never outpass this value, right? but I checked even with 200). Is there something I should specially take care of for Wideband mode? Did anyone encountered a similar issue? Thank you in advance for any comments/hints :-) With best regards. -------------- next...

> For the persistent storage, the only change that I have made is to > MAX_CHARS_PER_FRAME, which is set to 2000 in bits.c. I changed bits.c to > set this value only if it was not already defined, and then put my own, much > smaller value in config.h. Yeah, I think I'll add an option like that. > For the scratch stack, I replace the fixed values in nb_encoder_init and...

...rk that you did at the end of May (thank you for > this). > > arch.h: Add switch for compilers not supporting "long long" (C55x does, C54x > and older C64x does not) > bits.c: Allow external definition for max buffer size, change > MAX_BYTES_PER_FRAME > to MAX_CHARS_PER_FRAME for consistency > misc.c: Added override switches to alloc routines, conditional include of > user file > changes to allow manual memory allocation rather than using heap > > Note that none of these changes are necessary to get Speex to run on C55x. > > The arch.h ch...

...don't know where that clicking noise is coming from. Any advice/comments/suggestions? > > Here's what's included in my config.h file for Speex (compiled with -DCONFIG_TI_C6X): > > #define FIXED_POINT > #define FRAME_SIZE 160 > #define DISABLE_WIDEBAND > #define MAX_CHARS_PER_FRAME (42/BYTES_PER_CHAR) > #define MANUAL_ALLOC > #define USER_MISC > > Speex narrow band parameters I'm using: > Quality: 2 /* 5950 bps */ > Enhancement: 0 > Vbr: disabled > Complexity: 1 > > The DaVinci processor is relatively new and I can't...

...SpeexMode * speex_lib_get_mode (int mode) { if (mode < 0 || mode >= SPEEX_NB_MODES) return NULL; Index: libspeex/bits.c =================================================================== --- libspeex/bits.c (revision 14645) +++ libspeex/bits.c (working copy) @@ -45,7 +45,7 @@ #define MAX_CHARS_PER_FRAME (2000/BYTES_PER_CHAR) #endif -void speex_bits_init(SpeexBits *bits) +EXPORT void speex_bits_init(SpeexBits *bits) { bits->chars = (char*)speex_alloc(MAX_CHARS_PER_FRAME); if (!bits->chars) @@ -58,7 +58,7 @@ speex_bits_reset(bits); } -void speex_bits_init_buffer(SpeexBits *b...

...SpeexMode * speex_lib_get_mode (int mode) { if (mode < 0 || mode >= SPEEX_NB_MODES) return NULL; Index: libspeex/bits.c =================================================================== --- libspeex/bits.c (revision 14645) +++ libspeex/bits.c (working copy) @@ -45,7 +45,7 @@ #define MAX_CHARS_PER_FRAME (2000/BYTES_PER_CHAR) #endif -void speex_bits_init(SpeexBits *bits) +EXPORT void speex_bits_init(SpeexBits *bits) { bits->chars = (char*)speex_alloc(MAX_CHARS_PER_FRAME); if (!bits->chars) @@ -58,7 +58,7 @@ speex_bits_reset(bits); } -void speex_bits_init_buffer(SpeexBits *b...

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