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Tsirkin" , Christian Schoenebeck , Ani Sinha , =?UTF-8?q?Alex=20Benn=C3=A9e?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , Zhao Liu , Marcel Apfelbaum , Yanan Wang , Akihiko Odaki Subject: [PULL 15/16] audio: Add functions to initialize buffers Date: Tue, 17 Mar 2026 21:19:15 +0400 Message-ID: <20260317171916.438575-16-marcandre.lureau@redhat.com> In-Reply-To: <20260317171916.438575-1-marcandre.lureau@redhat.com> References: <20260317171916.438575-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -3 X-Spam_score: -0.4 X-Spam_bar: / X-Spam_report: (-0.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.819, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.903, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1773768082460154100 From: Akihiko Odaki These functions can be used to re-initialize buffers when hardware parameters change due to device hotplug, for example. Signed-off-by: Akihiko Odaki Reviewed-by: Phil Dennis-Jordan Reviewed-by: Christian Schoenebeck Reviewed-by: Marc-Andr=C3=A9 Lureau Message-Id: <20260304-coreaudio-v8-5-bf1d40731e73@rsg.ci.i.u-tokyo.ac.jp> --- audio/audio_int.h | 2 ++ audio/audio-mixeng-be.c | 24 ++++++++++++++++++------ 2 files changed, 20 insertions(+), 6 deletions(-) diff --git a/audio/audio_int.h b/audio/audio_int.h index 06f79ade6b0..290cf373b49 100644 --- a/audio/audio_int.h +++ b/audio/audio_int.h @@ -141,9 +141,11 @@ static inline void *advance(void *p, size_t incr) int wav_start_capture(AudioBackend *state, CaptureState *s, const char *pa= th, int freq, int bits, int nchannels); =20 +void audio_generic_initialize_buffer_in(HWVoiceIn *hw); void audio_generic_run_buffer_in(HWVoiceIn *hw); void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size); void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size); +void audio_generic_initialize_buffer_out(HWVoiceOut *hw); void audio_generic_run_buffer_out(HWVoiceOut *hw); size_t audio_generic_buffer_get_free(HWVoiceOut *hw); void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size); diff --git a/audio/audio-mixeng-be.c b/audio/audio-mixeng-be.c index 5878b23e04e..f7d73d85608 100644 --- a/audio/audio-mixeng-be.c +++ b/audio/audio-mixeng-be.c @@ -1187,14 +1187,20 @@ void audio_run(AudioMixengBackend *s, const char *m= sg) } } =20 +void audio_generic_initialize_buffer_in(HWVoiceIn *hw) +{ + g_free(hw->buf_emul); + hw->size_emul =3D hw->samples * hw->info.bytes_per_frame; + hw->buf_emul =3D g_malloc(hw->size_emul); + hw->pos_emul =3D hw->pending_emul =3D 0; +} + void audio_generic_run_buffer_in(HWVoiceIn *hw) { AudioMixengBackendClass *k =3D AUDIO_MIXENG_BACKEND_GET_CLASS(hw->s); =20 if (unlikely(!hw->buf_emul)) { - hw->size_emul =3D hw->samples * hw->info.bytes_per_frame; - hw->buf_emul =3D g_malloc(hw->size_emul); - hw->pos_emul =3D hw->pending_emul =3D 0; + audio_generic_initialize_buffer_in(hw); } =20 while (hw->pending_emul < hw->size_emul) { @@ -1227,6 +1233,14 @@ void audio_generic_put_buffer_in(HWVoiceIn *hw, void= *buf, size_t size) hw->pending_emul -=3D size; } =20 +void audio_generic_initialize_buffer_out(HWVoiceOut *hw) +{ + g_free(hw->buf_emul); + hw->size_emul =3D hw->samples * hw->info.bytes_per_frame; + hw->buf_emul =3D g_malloc(hw->size_emul); + hw->pos_emul =3D hw->pending_emul =3D 0; +} + size_t audio_generic_buffer_get_free(HWVoiceOut *hw) { if (hw->buf_emul) { @@ -1260,9 +1274,7 @@ void audio_generic_run_buffer_out(HWVoiceOut *hw) void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size) { if (unlikely(!hw->buf_emul)) { - hw->size_emul =3D hw->samples * hw->info.bytes_per_frame; - hw->buf_emul =3D g_malloc(hw->size_emul); - hw->pos_emul =3D hw->pending_emul =3D 0; + audio_generic_initialize_buffer_out(hw); } =20 *size =3D MIN(hw->size_emul - hw->pending_emul, --=20 2.53.0