Commit 1d4b4431 authored by Jean-Baptiste Kempf's avatar Jean-Baptiste Kempf

Add Test for AudioTrack output

parent 73f1bdfb
From 0ed3d4f45e9c186264412db4b210fd21a2de4bea Mon Sep 17 00:00:00 2001
From: Ming Hu <tewilove@gmail.com>
Date: Thu, 8 Mar 2012 22:46:57 -0800
Subject: [PATCH 2/2] android: add native AudioTrack aout module
---
configure.ac | 12 ++
extras/package/android/configure.sh | 1 +
modules/audio_output/Modules.am | 1 +
modules/audio_output/audiotrack.c | 285 +++++++++++++++++++++++++++++++++++
4 files changed, 299 insertions(+)
create mode 100644 modules/audio_output/audiotrack.c
diff --git a/configure.ac b/configure.ac
index 91f2323..08c3481 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3548,6 +3548,18 @@ if test "${HAVE_ANDROID}" = "1"; then
fi
dnl
+dnl android AudioTrack module
+dnl
+AC_ARG_ENABLE(audiotrack,
+ [ --enable-audiotrack Android native AudioTrack audio output module (default disabled)])
+if test "${enable_audiotrack}" = "yes"; then
+ if test "${HAVE_ANDROID}" = "1"; then
+ VLC_ADD_PLUGIN([android_audiotrack])
+ VLC_ADD_LDFLAGS([android_audiotrack], [-ldl])
+ fi
+fi
+
+dnl
dnl libsamplerate plugin
dnl
PKG_ENABLE_MODULES_VLC([SAMPLERATE], [], [samplerate], [Resampler with libsamplerate], [auto])
diff --git a/extras/package/android/configure.sh b/extras/package/android/configure.sh
index 6118da3..2778948 100755
--- a/extras/package/android/configure.sh
+++ b/extras/package/android/configure.sh
@@ -52,6 +52,7 @@ sh $VLC_SOURCEDIR/configure --host=arm-linux-androideabi --build=x86_64-unknown-
--enable-avcodec \
--enable-opensles \
--enable-android-surface \
+ --enable-audiotrack \
--enable-debug \
--enable-mkv \
--enable-taglib \
diff --git a/modules/audio_output/Modules.am b/modules/audio_output/Modules.am
index 1c571ee..fcdd5e4 100644
--- a/modules/audio_output/Modules.am
+++ b/modules/audio_output/Modules.am
@@ -5,6 +5,7 @@ SOURCES_auhal = auhal.c
SOURCES_jack = jack.c
SOURCES_audioqueue = audioqueue.c
SOURCES_opensles_android = opensles_android.c
+SOURCES_android_audiotrack = audiotrack.c
libadummy_plugin_la_SOURCES = adummy.c
libadummy_plugin_la_CFLAGS = $(AM_CFLAGS)
diff --git a/modules/audio_output/audiotrack.c b/modules/audio_output/audiotrack.c
new file mode 100644
index 0000000..d21c999
--- /dev/null
+++ b/modules/audio_output/audiotrack.c
@@ -0,0 +1,285 @@
+/*****************************************************************************
+ * audiotrack.c: Android native AudioTrack audio output module
+ *****************************************************************************
+ *
+ * Authors: Ming Hu <tewilove@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_aout.h>
+
+#include <dlfcn.h>
+
+#define SIZE_OF_AUDIOTRACK 256
+
+/* see AudioSystem.h */
+enum stream_type {
+ MUSIC = 3
+};
+
+enum pcm_sub_format {
+ PCM_SUB_16_BIT = 0x1, // must be 1 for backward compatibility
+ PCM_SUB_8_BIT = 0x2 // must be 2 for backward compatibility
+};
+
+enum audio_format {
+ PCM = 0x00000000, // must be 0 for backward compatibility
+ PCM_16_BIT = (PCM|PCM_SUB_16_BIT),
+ PCM_8_BIT = (PCM|PCM_SUB_8_BIT)
+};
+
+enum audio_channels {
+ CHANNEL_OUT_FRONT_LEFT = 0x4,
+ CHANNEL_OUT_FRONT_RIGHT = 0x8,
+ CHANNEL_OUT_MONO = CHANNEL_OUT_FRONT_LEFT,
+ CHANNEL_OUT_STEREO = (CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT)
+};
+
+// _ZN7android11AudioSystem19getOutputFrameCountEPii
+typedef int (*AudioSystem_getOutputFrameCount)(int *, int);
+// _ZN7android11AudioSystem16getOutputLatencyEPji
+typedef int (*AudioSystem_getOutputLatency)(unsigned int *, int);
+// _ZN7android11AudioSystem21getOutputSamplingRateEPii
+typedef int (*AudioSystem_getOutputSamplingRate)(int *, int);
+
+// _ZN7android10AudioTrack16getMinFrameCountEPiij
+typedef int (*AudioTrack_getMinFrameCount)(int *, int, unsigned int);
+
+// _ZN7android10AudioTrackC1EijiiijPFviPvS1_ES1_ii
+typedef void (*AudioTrack_ctor)(void *, int, unsigned int, int, int, int, unsigned int, void (*)(int, void *, void *), void *, int, int);
+// _ZN7android10AudioTrackC1EijiiijPFviPvS1_ES1_i
+typedef void (*AudioTrack_ctor_legacy)(void *, int, unsigned int, int, int, int, unsigned int, void (*)(int, void *, void *), void *, int);
+// _ZN7android10AudioTrackD1Ev
+typedef void (*AudioTrack_dtor)(void *);
+// _ZNK7android10AudioTrack9initCheckEv
+typedef int (*AudioTrack_initCheck)(void *);
+// _ZN7android10AudioTrack5startEv
+typedef int (*AudioTrack_start)(void *);
+// _ZN7android10AudioTrack4stopEv
+typedef int (*AudioTrack_stop)(void *);
+// _ZN7android10AudioTrack5writeEPKvj
+typedef int (*AudioTrack_write)(void *, void const*, unsigned int);
+// _ZN7android10AudioTrack5flushEv
+typedef int (*AudioTrack_flush)(void *);
+
+struct aout_sys_t {
+ int type;
+ uint32_t rate;
+ int channel;
+ int format;
+ int size;
+ void *libmedia;
+ void *AudioTrack;
+ AudioSystem_getOutputFrameCount as_getOutputFrameCount;
+ AudioSystem_getOutputLatency as_getOutputLatency;
+ AudioSystem_getOutputSamplingRate as_getOutputSamplingRate;
+ AudioTrack_getMinFrameCount at_getMinFrameCount;
+ AudioTrack_ctor at_ctor;
+ AudioTrack_ctor_legacy at_ctor_legacy;
+ AudioTrack_dtor at_dtor;
+ AudioTrack_initCheck at_initCheck;
+ AudioTrack_start at_start;
+ AudioTrack_stop at_stop;
+ AudioTrack_write at_write;
+ AudioTrack_flush at_flush;
+};
+
+static void *InitLibrary(struct aout_sys_t *p_sys);
+
+static int Open(vlc_object_t *);
+static void Close(vlc_object_t *);
+static void Play(audio_output_t *, block_t *);
+
+vlc_module_begin ()
+ set_shortname("AudioTrack")
+ set_description(N_("Android AudioTrack audio output"))
+ set_capability("audio output", 25)
+ set_category(CAT_AUDIO)
+ set_subcategory(SUBCAT_AUDIO_AOUT)
+ add_shortcut("android")
+ set_callbacks(Open, Close)
+vlc_module_end ()
+
+static void *InitLibrary(struct aout_sys_t *p_sys) {
+ void *p_library;
+
+ p_library = dlopen("libmedia.so", RTLD_NOW);
+ if (!p_library)
+ return NULL;
+ p_sys->as_getOutputFrameCount = (AudioSystem_getOutputFrameCount)(dlsym(p_library, "_ZN7android11AudioSystem19getOutputFrameCountEPii"));
+ p_sys->as_getOutputLatency = (AudioSystem_getOutputLatency)(dlsym(p_library, "_ZN7android11AudioSystem16getOutputLatencyEPji"));
+ p_sys->as_getOutputSamplingRate = (AudioSystem_getOutputSamplingRate)(dlsym(p_library, "_ZN7android11AudioSystem21getOutputSamplingRateEPii"));
+ p_sys->at_getMinFrameCount = (AudioTrack_getMinFrameCount)(dlsym(p_library, "_ZN7android10AudioTrack16getMinFrameCountEPiij"));
+ p_sys->at_ctor = (AudioTrack_ctor)(dlsym(p_library, "_ZN7android10AudioTrackC1EijiiijPFviPvS1_ES1_ii"));
+ p_sys->at_ctor_legacy = (AudioTrack_ctor_legacy)(dlsym(p_library, "_ZN7android10AudioTrackC1EijiiijPFviPvS1_ES1_i"));
+ p_sys->at_dtor = (AudioTrack_dtor)(dlsym(p_library, "_ZN7android10AudioTrackD1Ev"));
+ p_sys->at_initCheck = (AudioTrack_initCheck)(dlsym(p_library, "_ZNK7android10AudioTrack9initCheckEv"));
+ p_sys->at_start = (AudioTrack_start)(dlsym(p_library, "_ZN7android10AudioTrack5startEv"));
+ p_sys->at_stop = (AudioTrack_stop)(dlsym(p_library, "_ZN7android10AudioTrack4stopEv"));
+ p_sys->at_write = (AudioTrack_write)(dlsym(p_library, "_ZN7android10AudioTrack5writeEPKvj"));
+ p_sys->at_flush = (AudioTrack_flush)(dlsym(p_library, "_ZN7android10AudioTrack5flushEv"));
+ // need the first 3 or the last 1
+ if (!((p_sys->as_getOutputFrameCount && p_sys->as_getOutputLatency && p_sys->as_getOutputSamplingRate) || p_sys->at_getMinFrameCount)) {
+ dlclose(p_library);
+ return NULL;
+ }
+ // need all in the list
+ if (!((p_sys->at_ctor || p_sys->at_ctor_legacy) && p_sys->at_dtor && p_sys->at_initCheck && p_sys->at_start && p_sys->at_stop && p_sys->at_write && p_sys->at_flush)) {
+ dlclose(p_library);
+ return NULL;
+ }
+ return p_library;
+}
+
+static int Open(vlc_object_t *p_this) {
+ struct aout_sys_t *p_sys;
+ void *p_library;
+ audio_output_t *p_aout = (audio_output_t*)(p_this);
+ int status;
+ int afSampleRate, afFrameCount, afLatency, minBufCount, minFrameCount;
+ int type, channel, rate, format;
+
+ p_sys = (struct aout_sys_t*) malloc(sizeof(aout_sys_t));
+ if (p_sys == NULL)
+ return VLC_ENOMEM;
+ p_library = InitLibrary(p_sys);
+ if (!p_library) {
+ msg_Err(p_aout, "Could not initialize libmedia.so!");
+ return VLC_EGENERIC;
+ }
+ p_sys->libmedia = p_library;
+ // AudioSystem::MUSIC = 3
+ type = MUSIC;
+ p_sys->type = type;
+ // 4000 <= frequency <= 48000
+ if (p_aout->format.i_rate < 4000)
+ p_aout->format.i_rate = 4000;
+ if (p_aout->format.i_rate > 48000)
+ p_aout->format.i_rate = 48000;
+ rate = p_aout->format.i_rate;
+ p_sys->rate = rate;
+ // U8/S16 only
+ if (p_aout->format.i_format != VLC_CODEC_U8 && p_aout->format.i_format != VLC_CODEC_S16L)
+ p_aout->format.i_format = VLC_CODEC_S16L;
+ // AudioSystem::PCM_16_BIT = 1
+ // AudioSystem::PCM_8_BIT = 2
+ format = (p_aout->format.i_format == VLC_CODEC_S16L) ? PCM_16_BIT : PCM_8_BIT;
+ p_sys->format = format;
+ // TODO: android supports more channels
+ channel = aout_FormatNbChannels(&p_aout->format);
+ if (channel > 2) {
+ channel = 2;
+ p_aout->format.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
+ }
+ // AudioSystem::CHANNEL_OUT_STEREO = 12
+ // AudioSystem::CHANNEL_OUT_MONO = 4
+ channel = (channel == 2) ? CHANNEL_OUT_STEREO : CHANNEL_OUT_MONO;
+ p_sys->channel = channel;
+ // use the minium value
+ if (!p_sys->at_getMinFrameCount) {
+ status = p_sys->as_getOutputSamplingRate(&afSampleRate, type);
+ status ^= p_sys->as_getOutputFrameCount(&afFrameCount, type);
+ status ^= p_sys->as_getOutputLatency((uint32_t*)(&afLatency), type);
+ if (status != 0) {
+ free(p_sys);
+ dlclose(p_sys->libmedia);
+ return VLC_EGENERIC;
+ }
+ minBufCount = afLatency / ((1000 * afFrameCount) / afSampleRate);
+ if (minBufCount < 2)
+ minBufCount = 2;
+ minFrameCount = (afFrameCount * rate * minBufCount) / afSampleRate;
+ p_aout->format.i_bytes_per_frame = minFrameCount;
+ }
+ else {
+ status = p_sys->at_getMinFrameCount(&p_aout->format.i_bytes_per_frame, type, rate);
+ if (status != 0) {
+ dlclose(p_sys->libmedia);
+ free(p_sys);
+ return VLC_EGENERIC;
+ }
+ }
+ p_aout->format.i_bytes_per_frame <<= 1;
+ p_sys->size = p_aout->format.i_bytes_per_frame;
+ // sizeof(AudioTrack) == 0x58 (not sure) on 2.2.1, this should be enough
+ p_sys->AudioTrack = malloc(SIZE_OF_AUDIOTRACK);
+ if (!p_sys->AudioTrack) {
+ dlclose(p_sys->libmedia);
+ free(p_sys);
+ return VLC_ENOMEM;
+ }
+ *((uint32_t *) p_sys->AudioTrack + SIZE_OF_AUDIOTRACK - 4) = 0xbaadbaad;
+ // higher than android 2.2
+ if (p_sys->at_ctor)
+ p_sys->at_ctor(p_sys->AudioTrack, p_sys->type, p_sys->rate, p_sys->format, p_sys->channel, p_sys->size, 0, NULL, NULL, 0, 0);
+ // higher than android 1.6
+ else if (p_sys->at_ctor_legacy)
+ p_sys->at_ctor_legacy(p_sys->AudioTrack, p_sys->type, p_sys->rate, p_sys->format, p_sys->channel, p_sys->size, 0, NULL, NULL, 0);
+ if (*((uint32_t *) p_sys->AudioTrack + SIZE_OF_AUDIOTRACK - 4) != 0xbaadbaad) {
+ msg_Err(p_aout, "AudioTrack ctor touched somewhere not belongs to it, abort now!");
+ abort();
+ }
+ status = p_sys->at_initCheck(p_sys->AudioTrack);
+ // android 1.6 uses channel count instead of type
+ if (status != 0) {
+ p_sys->channel = (p_sys->channel == CHANNEL_OUT_STEREO) ? 2 : 1;
+ p_sys->at_ctor_legacy(p_sys->AudioTrack, p_sys->type, p_sys->rate, p_sys->format, p_sys->channel, p_sys->size, 0, NULL, NULL, 0);
+ status = p_sys->at_initCheck(p_sys->AudioTrack);
+ }
+ if (status != 0) {
+ msg_Err(p_aout, "Cannot create AudioTrack!");
+ free(p_sys->AudioTrack);
+ free(p_sys);
+ return VLC_EGENERIC;
+ }
+
+ p_aout->sys = p_sys;
+ p_aout->pf_play = Play;
+
+ p_sys->at_start(p_sys->AudioTrack);
+
+ return VLC_SUCCESS;
+}
+
+static void Close(vlc_object_t *p_this) {
+ audio_output_t *p_aout = (audio_output_t*)p_this;
+ aout_sys_t *p_sys = p_aout->sys;
+
+ p_sys->at_stop(p_sys->AudioTrack);
+ p_sys->at_flush(p_sys->AudioTrack);
+ p_sys->at_dtor(p_sys->AudioTrack);
+ free(p_sys->AudioTrack);
+ dlclose(p_sys->libmedia);
+ free(p_sys);
+}
+
+static void Play(audio_output_t *p_aout, block_t *p_buffer) {
+ aout_sys_t *p_sys = p_aout->sys;
+
+ size_t length = 0;
+ while (length < p_buffer->i_buffer) {
+ length += p_sys->at_write(p_sys->AudioTrack, (char*)(p_buffer->p_buffer) + length, p_buffer->i_buffer - length);
+ }
+
+ aout_BufferFree(p_buffer);
+}
+
--
1.7.9.6
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