similar to: Static Variables?

I am having trouble understanding the stack allocation scheme when using a C55xx device. From what I can tell, the GLOBAL_STACK_SIZE is set in arch.h to 100,000 bytes (when using FIXED_POINT), which is then used in the ALLOC_STACK macro found in stack_alloc.h. This macro seems to say, if global_stack==0, then call celt_alloc_scratch, found in os_support.h, which in turn attempts to allocate (using

Jean-Mark, Tim, Could either of you expound on the following comment in cwrs.c? /*If _k==0, the following do-while loop will overflow the buffer.*/ ---------------------------------------------------------------- ...because the following do-loop does overflow the buffer when k=126 k=2; do _u[k]=(k<<1)-1; while(++k<len); Thanks, MikeH -------------- next

Tony, How is this going? Have you been able to get CELT to run on a TI55xx? I am very interested in the % utilization of the hardware and whether multiple instance of CELT on the same DSP are feasible. I look forward to your findings. MikeH -------------- next part -------------- An HTML attachment was scrubbed... URL:

Jean-Marc, It appears that since testcelt reads a WAVE file from disck and passes the data directly to celt_encode, so that celt_encode's "in" buffer must be expecting little-endian formatted packets. Is this correct? Is there endiness switch somewhere? Thx MikeH -------------- next part -------------- An HTML attachment was scrubbed... URL:

I am attempting to port CELT to the TI C5515 DSP. I am compiling/assembling/linking with Code Composer Studio 4. I have enabled the TI_55 specific optimizations in my config.h file per this <http://lists.xiph.org/pipermail/celt-dev/2008-December/000033.html> post. However, I am getting several "undefined symbol" linking errors that do not make sense to me. According to the error

"frame_size = PCM audio in signed 16-bit format (native endian). There must be exactly frame_size samples per channel." Sorry for such a simple request, but could you please clarify the definition of frame_size when using stereo audio channels? When you say "frame_size samples" does this mean that, if my frame_size is defined as 128, there are 64 left samples and 64 right

Gents, "CELT now supports a larger dynamic range, suitable for encoding 24-bit audio (float version only)." I realize this was way back in V6, but is it still true? Thx, MikeH -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/opus/attachments/20111010/d38482b5/attachment-0002.htm

In order to determine the optimum heap size requirements for my embedded C55xx design, I have used the following to get the encoder and decoder memory requirements: size = opus_encoder_get_size(config.channels); enc = malloc(size); error = opus_encoder_init(enc, config.Fs, config.channels, config.application); size = opus_decoder_get_size(config.channels);

Tim, et al, I have run into several problems with V0.8.0. I will address them seperately. 1. My compiler is complaining about the following code in celt.c which seems to define metric first as celt_word32, then as celt_word16. Am I mis-interpreting something? ?? VARDECL(celt_word32, metric); ?? ALLOC(metric, len, celt_word16); Thx MikeH -------------- next part -------------- An HTML attachment

Gents, My TI C55xx complier is complaining about (in opus_encoder.c, opus_encode()): st->silk_mode.payloadSize_ms = 1000 * frame_size / st->Fs; where .payloadSize_ms is opus_int, frame_size is an int, and Fs is a long. Should one of these be cast differently? Thx, MikeH -------------- next part -------------- An HTML attachment was scrubbed... URL:

Gents, In Version 8.1, QCONST16 is defined as follows in arch.h within the FLOATING_POINT section: #define QCONST16(x,bits) (x) However, in both celt.c and quant_bands.c, QCONST16 is referenced without a conditional FLOATING_POINT define. So when I compile as FIXED_POINT I get an "undefined identifier" for QCONST16. Am I doing something wrong? Thx, MikeH

Hi,I have been trying some different sample rate and bitrate combinations to get a feel for how CELT behaves,too, like Andrew Lentvorski. But I want to use VBR option.I want to ask a question about VBR in CELT codec.Can we use VBR option in CELT ??? "byte_per_packet" variable in code means constant bit rate, does not it ?In this code : bytes_per_packet is constant.len =

Gents, Where might I find the Fixed Point switch for the Silk portion of Opus 1.0.1? I have generated a config.h file and added #define FIXED_POINT to my project, but still get FLP compile errors in the Silk files. Thx, MikeH -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/opus/attachments/20120821/f1c2327a/attachment.htm

Jean-Marc, Can you give us some insight into the meaning and usage of #define SMALL_FOOTPRINT that appears in cwrs.c? Thx MikeH -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/opus/attachments/20100630/6edffd7c/attachment-0002.htm

Jean-Marc, Thanks for the response and the helpful info. I am trying to get the library to build without using the pseudostack define, and use either VAR_ARRAYS or ALLOC, but it seems the global stack is not defined. Where do can I define this in my example? VR -----Original Message----- From: Jean-Marc Valin [mailto:jmvalin at jmvalin.ca] Sent: Tuesday, February 20, 2018 5:40 PM To:

?? hi ?Jean-Marc, ? thanks for your answer. But still I am struggling to find a reasonable upper limit for the RAM sizes. ? You say we need 4.5/9.0 kB for enc/dec per channel. But are those sizes really independent of any settings, like frame_size, bitrate, complexity, etc. ? ? at least in our configuration I find these requirements:? ?- native stack: < 2.1kB (enc or dec) measured by RealView

Guys, Program stack is getting overflowed when I create and destroy encoder instance continuously for around 30 times. How can I ensure stack is completely freed when I destroy the encoder instance? I tried with VAR_ARRAYS. But Its giving me errors while I try to compile. I suppose VAR_ARRAYS allocates local variables as arrays so that they could go on to stack and finally when we leave the

Ok, I got a strange case.. I got a bugreport from a user about my application crashing on him. After a bit of trouble, I got him to report back the module and offset it crashed at (win32). I always retain a copy of my symbol files for my release builds, so tracking down the crash address leads to: (gdb) list *0x6d5c2213 0x6d5c2213 is in split_cb_search_shape_sign (cb_search.c:414). 409

I'm glad to hear that my data size can be shrunk considerably, however I do not know the minimum values that I would set the static arrays to be. I hate to be a bother but could you tell me the minimum values for these arrays/structures in the state structure? Thanks! encode: stack winBuf excBuf swBuf lagWindow old_lsp old_qlsp mem_sp mem_sw mem_sw_whole mem_exc mem_exc2 pi_gain pitch

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