similar to: Global stack on Cortex-M4

Hi all ! If someone could give me a hint on how to proceed with the following i'd be very happy: I have a test setup on an nrf52832 (Cortex M4) in which I receive audio from a PDM microphone (64 sample frame) and pass it directly to an I2S device i.e. from ISR to ISR. With uncompressed audio this works just fine. Now I try to insert OPUS1.3 in the path but cannot make it work. The

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);

---------- Forwarded message --------- From: Peter Svensson <petersvenss85 at gmail.com> Date: tis 19 feb. 2019 kl 20:43 Subject: Re: [opus] Custom mode To: Emily Bowman Hi Emily ! Thank you for responding. I think my problem is not (yet) with OPUS itself. Encoding at complexity 0 takes 1.6ms ( 4.342ms at complexity 10 !) and decoding takes 1.9ms. 3.5ms, out of my 4.096ms budget, is

Hello, lately, I have been thinking about how to resolve the problem with that the program size increases enormously when including <iostream> when compiling with libstdc++. In this library, in <iostream> there is a static object __ioinit initialized like so: ... // For construction of filebuffers for cout, cin, cerr, clog et. al. static ios_base::Init __ioinit; ... This

On 10/18/2017 01:40 PM, Eric wrote: > Secondly; With the "overide" directives above no dynamic memory > allocation is supposed to happen. However, the following call chain > (obviously)  cause a crash: > > opus_encode(..)-> > opus_encode_native(..)->ALLOC_STACK->opus_alloc_scratch(..)->opus_alloc(..) NONTHREADSAFE_PSEUDOSTACK requires a working allocator.

Hello. I'm trying to use opus-tools on Android to encode wav data but I couldn't build it. I need to resample my raw data so opusenc does its job. Is it possible to use opus-tools on Android? OPUS is the first citizen in my app but not sure which flags I need to add to build this. LOCAL_CFLAGS := -w -std=gnu99 -O2 -DNULL=0 -DSOCKLEN_T=socklen_t -DLOCALE_NOT_USED -D_LARGEFILE_SOURCE=1

Hi everyone, I?m currently trying to use opus on a ST ARM (STM32F407) without any OS (bare metal). The aim of my project is to transmit voice over CAN bus. The main issue I have is that opus fail to allocate memory, the ALLOC macro always return a NULL pointer. I have sure that I have enough free space to allocate buffers. Is there anyone who already try this or have meet this issue ? Thanks

Is there a particular reason why CELT grabs 100KB of stack immediately? Is that really required or can that be trimmed down some/a lot? -a

We already divided out our classes as you did for ARM. The problem here is that we have a store/load byte/halfword to/from a Frame object. We know at that time that it's not going to be possible to store it using SP because there is only such instructions for store/load of a word. What we would want to do is to move SP into a Mips 16 register and then do a indexed load/store off of that

Ok. That's a somewhat different problem, then. Devil will be in the details of what you want to do. A few options. First is to always have a standard frame pointer register available and reference off of that. Caveat: dynamic stack realignment and vararrays muck with that more than a bit. Second is what gcc is doing and reserve a register just for this in addition to the frame register.

Turned out to be a rather simple fix. Just copied SP to a virtual register in the beginning of the function. Then added an extra operand to the DAGs with stack reference load/store, with the extra operand equal to this virtual register if the Parent of the address is a LOAD/STORE of an 8 or 16 bit quantity. It worked fine. When needed SP got copied to a mips 16 register and when the SP alias