[alsa-devel] [RFC PATCH] cplay: Always write frag * fragment_size

[Daniel Baluta]

Hi Vinod,

Just noticed that this patch is similar with this one for crecord

http://git.alsa-project.org/?p=tinycompress.git;a=commit;h=e8e36567438c
16a5121943205a0cd8c63924d0d8

So, I think we can remove the RFC tag :).

thanks,
Daniel.
On Lu, 2018-11-05 at 14:23 +0000, Daniel Baluta wrote:
> cplay first writes frag * fragment_size and then
> it only writes one fragment at a time.
> 
> This means for example than if the user supplied a buffer_size
> it will only be used for the first write.
> 
> Signed-off-by: Daniel Baluta <daniel.baluta at nxp.com>
> ---
> I noticed this while investigating why cplay prints buffer_size as
> 0 when not specified as command line argument to cplay.
> 
> I also noticed that cred always reads frag * frament_size, so I think
> this patch should be OK, but marking it as RFC to get your thoughts.
> 
>  src/utils/cplay.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/src/utils/cplay.c b/src/utils/cplay.c
> index 2a52b52..b016f52 100644
> --- a/src/utils/cplay.c
> +++ b/src/utils/cplay.c
> @@ -435,15 +435,15 @@ void play_samples(char *name, unsigned int
> card, unsigned int device,
>  	};
>  	if (verbose)
>  		printf("%s: Opened compress device\n", __func__);
> -	size = config.fragment_size;
> -	buffer = malloc(size * config.fragments);
> +	size = config.fragments * config.fragment_size;
> +	buffer = malloc(size);
>  	if (!buffer) {
>  		fprintf(stderr, "Unable to allocate %d bytes\n",
> size);
>  		goto COMP_EXIT;
>  	}
>  
>  	/* we will write frag fragment_size and then start */
> -	num_read = fread(buffer, 1, size * config.fragments, file);
> +	num_read = fread(buffer, 1, size, file);
>  	if (num_read > 0) {
>  		if (verbose)
>  			printf("%s: Doing first buffer write of
> %d\n", __func__, num_read);
> @@ -459,7 +459,7 @@ void play_samples(char *name, unsigned int card,
> unsigned int device,
>  		}
>  	}
>  	printf("Playing file %s On Card %u device %u, with buffer of
> %lu bytes\n",
> -			name, card, device, buffer_size);
> +			name, card, device, size);
>  	printf("Format %u Channels %u, %u Hz, Bit Rate %d\n",
>  			codec.id, codec.ch_in, codec.sample_rate,
> codec.bit_rate);
>