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[84.236.21.48]) by smtp.gmail.com with ESMTPSA id i6sm10726509wje.33.2015.08.06.11.28.46 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 06 Aug 2015 11:28:46 -0700 (PDT) From: "=?UTF-8?q?K=C5=91v=C3=A1g=C3=B3=2C=20Zolt=C3=A1n?=" X-Google-Original-From: =?UTF-8?q?K=C5=91v=C3=A1g=C3=B3=2C=20Zolt=C3=A1n?= To: qemu-devel@nongnu.org Date: Thu, 6 Aug 2015 20:28:36 +0200 Message-Id: <33a7717fa77b487b5678ed693d33ab0316e36f7d.1438884611.git.DirtY.iCE.hu@gmail.com> X-Mailer: git-send-email 2.4.5 In-Reply-To: References: MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2a00:1450:400c:c05::229 Cc: Gerd Hoffmann Subject: [Qemu-devel] [PATCH 24/25] paaudio: get/put_buffer functions X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This lets us avoid some buffer copying when using mixeng. Signed-off-by: Kővágó, Zoltán --- audio/paaudio.c | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) diff --git a/audio/paaudio.c b/audio/paaudio.c index a0b17c8..97e12ba 100644 --- a/audio/paaudio.c +++ b/audio/paaudio.c @@ -96,6 +96,59 @@ static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x) } \ } while (0); +static void *qpa_get_buffer_in(HWVoiceIn *hw, size_t *size) +{ + PAVoiceIn *p = (PAVoiceIn *) hw; + PAConnection *c = p->g->conn; + int r; + + pa_threaded_mainloop_lock(c->mainloop); + + CHECK_DEAD_GOTO(c, p->stream, unlock_and_fail, + "pa_threaded_mainloop_lock failed\n"); + + if (!p->read_length) { + r = pa_stream_peek(p->stream, &p->read_data, &p->read_length); + CHECK_SUCCESS_GOTO(c, r == 0, unlock_and_fail, + "pa_stream_peek failed\n"); + } + + *size = audio_MIN(p->read_length, *size); + + pa_threaded_mainloop_unlock(c->mainloop); + return (void *) p->read_data; + +unlock_and_fail: + pa_threaded_mainloop_unlock(c->mainloop); + *size = 0; + return NULL; +} + +static void qpa_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size) +{ + PAVoiceIn *p = (PAVoiceIn *) hw; + PAConnection *c = p->g->conn; + int r; + + pa_threaded_mainloop_lock(c->mainloop); + + CHECK_DEAD_GOTO(c, p->stream, unlock, + "pa_threaded_mainloop_lock failed\n"); + + assert(buf == p->read_data && size <= p->read_length); + + p->read_data += size; + p->read_length -= size; + + if (size && !p->read_length) { + r = pa_stream_drop(p->stream); + CHECK_SUCCESS_GOTO(c, r == 0, unlock, "pa_stream_drop failed\n"); + } + +unlock: + pa_threaded_mainloop_unlock(c->mainloop); +} + static size_t qpa_read(HWVoiceIn *hw, void *data, size_t length) { PAVoiceIn *p = (PAVoiceIn *) hw; @@ -134,6 +187,32 @@ unlock_and_fail: return 0; } +static void *qpa_get_buffer_out(HWVoiceOut *hw, size_t *size) +{ + PAVoiceOut *p = (PAVoiceOut *) hw; + PAConnection *c = p->g->conn; + void *ret; + int r; + + pa_threaded_mainloop_lock(c->mainloop); + + CHECK_DEAD_GOTO(c, p->stream, unlock_and_fail, + "pa_threaded_mainloop_lock failed\n"); + + *size = -1; + r = pa_stream_begin_write(p->stream, &ret, size); + CHECK_SUCCESS_GOTO(c, r >= 0, unlock_and_fail, + "pa_stream_begin_write failed\n"); + + pa_threaded_mainloop_unlock(c->mainloop); + return ret; + +unlock_and_fail: + pa_threaded_mainloop_unlock(c->mainloop); + *size = 0; + return NULL; +} + static size_t qpa_write(HWVoiceOut *hw, void *data, size_t length) { PAVoiceOut *p = (PAVoiceOut *) hw; @@ -692,12 +771,16 @@ static struct audio_pcm_ops qpa_pcm_ops = { .fini_out = qpa_fini_out, .write = qpa_write, .buffer_size_out = qpa_buffer_size_out, + .get_buffer_out = qpa_get_buffer_out, + .put_buffer_out = qpa_write, /* pa handles it */ .ctl_out = qpa_ctl_out, .init_in = qpa_init_in, .fini_in = qpa_fini_in, .read = qpa_read, .buffer_size_in = qpa_buffer_size_in, + .get_buffer_in = qpa_get_buffer_in, + .put_buffer_in = qpa_put_buffer_in, .ctl_in = qpa_ctl_in };