[PATCH v2 00/11] audio: more improvements

[Volker Rümelin]

A few patches from my audio patch queue.

Patches 1 - 2:
If a guest selects an unsupported sample rate, an error message is 
currently shown. The first patch takes care to suppress the error 
message and reports with the qemu_log_mask(LOG_UNIMP, ...) function that 
this is not supported. The second patch is needed because there are two 
code paths to reach the qemu_log_mask() function in the 
audio_pcm_sw_alloc_resources_* functions. The second path prints an 
additional error message up to now.

For more background information:
https://lists.nongnu.org/archive/html/qemu-devel/2022-10/msg04940.html

Patches 3 - 4:
General improvements.

Patches 5 - 9:
These patches remove the audio_calloc() function. The GLib g_new0 macro 
is a better replacement for audio_calloc(). There's one exception where 
g_malloc0() fits better.

Patches 10 - 11:
Audio playback and recording with the ALSA audio backend currently 
doesn't work well with the default audio settings.

v2: Address Daniel's comments

[PATCH v2 07/11] audio/audio_template: use g_malloc0() to replace 
audio_calloc()
The n_bytes argument of g_malloc0() is now always > 0 at this call site.

[PATCH v2 08/11] audio/audio_template: use g_new0() to replace 
audio_calloc()
Check samples for negative values. It's possible to have negative 
samples due to overflows or unsigned to signed conversions. Patch 01/11 
takes care of samples == 0.

Volker Rümelin (11):
  audio: log unimplemented audio device sample rates
  audio: don't show unnecessary error messages
  audio: rename hardware store to backend
  audio: remove unused #define AUDIO_STRINGIFY
  audio/mixeng: use g_new0() instead of audio_calloc()
  audio/alsaaudio: use g_new0() instead of audio_calloc()
  audio/audio_template: use g_malloc0() to replace audio_calloc()
  audio/audio_template: use g_new0() to replace audio_calloc()
  audio: remove audio_calloc() function
  alsaaudio: change default playback settings
  alsaaudio: reintroduce default recording settings

 audio/alsaaudio.c      | 27 ++++++-----------
 audio/audio.c          | 26 +---------------
 audio/audio_int.h      |  8 ++---
 audio/audio_template.h | 68 ++++++++++++++++++++++--------------------
 audio/mixeng.c         |  7 +----
 5 files changed, 48 insertions(+), 88 deletions(-)

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2.35.3