Optional (build with --disable-bluez5-aac-codec)
AAC User Configurations:
KEY VALUE DESC DEFAULT
aac_bitrate_mode [1, 5] Variable Bitrate (VBR) (encoder) 5
0 Constant Bitrate (CBR) (encoder)
aac_fmt s16 16-bit signed LE (encoder) auto
s32 32-bit signed LE (encoder)
auto
aac_afterburner <on/off> FDK-AAC afterburner feature (encoder) off
---
configure.ac | 14 +-
src/Makefile.am | 8 +
src/modules/bluetooth/a2dp/a2dp-api.h | 10 +-
src/modules/bluetooth/a2dp/a2dp_aac.c | 762 +++++++++++++++++++++++++
src/modules/bluetooth/a2dp/a2dp_util.c | 33 ++
5 files changed, 825 insertions(+), 2 deletions(-)
create mode 100644 src/modules/bluetooth/a2dp/a2dp_aac.c
diff --git a/configure.ac b/configure.ac
index 2512d3c95..0f9d7fb6c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1061,7 +1061,7 @@ PA_MACHINE_ID_FALLBACK="${localstatedir}/lib/dbus/machine-id"
AX_DEFINE_DIR(PA_MACHINE_ID_FALLBACK, PA_MACHINE_ID_FALLBACK,
[Fallback machine-id file])
-#### BlueZ support (optional, dependent on D-Bus and SBC) ####
+#### BlueZ support (optional, dependent on D-Bus and SBC and FDK-AAC) ####
AC_ARG_ENABLE([bluez5],
AS_HELP_STRING([--disable-bluez5],[Disable optional BlueZ 5 support]))
@@ -1083,6 +1083,16 @@ AS_IF([test "x$HAVE_BLUEZ_5" = "x1"], HAVE_BLUEZ=1, HAVE_BLUEZ=0)
AC_SUBST(HAVE_BLUEZ)
AM_CONDITIONAL([HAVE_BLUEZ], [test "x$HAVE_BLUEZ" = x1])
+## FDK-AAC ##
+AC_ARG_ENABLE([bluez5-aac-codec],
+ AS_HELP_STRING([--disable-bluez5-aac-codec],[Disable optional A2DP AAC codec support (Bluez 5)]))
+AS_IF([test "x$HAVE_BLUEZ_5" = "x1" && test "x$enable_bluez5_aac_codec" != "xno"],
+ [PKG_CHECK_MODULES(FDK_AAC, [ fdk-aac >= 0.1.5 ], HAVE_FDK_AAC=1, HAVE_FDK_AAC=0)],
+ HAVE_FDK_AAC=0)
+AC_SUBST(HAVE_FDK_AAC)
+AM_CONDITIONAL([HAVE_FDK_AAC], [test "x$HAVE_FDK_AAC" = x1])
+AS_IF([test "x$HAVE_FDK_AAC" = "x1"], AC_DEFINE([HAVE_FDK_AAC], 1, [Bluez 5 A2DP AAC codec enabled]))
+
## Bluetooth Headset profiles backend ##
AC_ARG_ENABLE([bluez5-ofono-headset],
@@ -1587,6 +1597,7 @@ AS_IF([test "x$HAVE_SYSTEMD_DAEMON" = "x1"], ENABLE_SYSTEMD_DAEMON=yes, ENABLE_S
AS_IF([test "x$HAVE_SYSTEMD_LOGIN" = "x1"], ENABLE_SYSTEMD_LOGIN=yes, ENABLE_SYSTEMD_LOGIN=no)
AS_IF([test "x$HAVE_SYSTEMD_JOURNAL" = "x1"], ENABLE_SYSTEMD_JOURNAL=yes, ENABLE_SYSTEMD_JOURNAL=no)
AS_IF([test "x$HAVE_BLUEZ_5" = "x1"], ENABLE_BLUEZ_5=yes, ENABLE_BLUEZ_5=no)
+AS_IF([test "x$HAVE_FDK_AAC" = "x1"], ENABLE_BLUEZ_5_AAC_CODEC=yes, ENABLE_BLUEZ_5_AAC_CODEC=no)
AS_IF([test "x$HAVE_BLUEZ_5_OFONO_HEADSET" = "x1"], ENABLE_BLUEZ_5_OFONO_HEADSET=yes, ENABLE_BLUEZ_5_OFONO_HEADSET=no)
AS_IF([test "x$HAVE_BLUEZ_5_NATIVE_HEADSET" = "x1"], ENABLE_BLUEZ_5_NATIVE_HEADSET=yes, ENABLE_BLUEZ_5_NATIVE_HEADSET=no)
AS_IF([test "x$HAVE_HAL_COMPAT" = "x1"], ENABLE_HAL_COMPAT=yes, ENABLE_HAL_COMPAT=no)
@@ -1645,6 +1656,7 @@ echo "
Enable LIRC: ${ENABLE_LIRC}
Enable D-Bus: ${ENABLE_DBUS}
Enable BlueZ 5: ${ENABLE_BLUEZ_5}
+ Enable A2DP AAC codec: ${ENABLE_BLUEZ_5_AAC_CODEC}
Enable ofono headsets: ${ENABLE_BLUEZ_5_OFONO_HEADSET}
Enable native headsets: ${ENABLE_BLUEZ_5_NATIVE_HEADSET}
Enable udev: ${ENABLE_UDEV}
diff --git a/src/Makefile.am b/src/Makefile.am
index 521b9b684..c44a65f05 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -2128,6 +2128,10 @@ libbluez5_util_la_SOURCES = \
modules/bluetooth/a2dp/a2dp-api.h \
modules/bluetooth/a2dp/a2dp-codecs.h \
modules/bluetooth/a2dp/rtp.h
+if HAVE_FDK_AAC
+libbluez5_util_la_SOURCES += \
+ modules/bluetooth/a2dp/a2dp_aac.c
+endif
if HAVE_BLUEZ_5_OFONO_HEADSET
libbluez5_util_la_SOURCES += \
modules/bluetooth/backend-ofono.c
@@ -2140,6 +2144,10 @@ endif
libbluez5_util_la_LDFLAGS = -avoid-version
libbluez5_util_la_LIBADD = $(MODULE_LIBADD) $(DBUS_LIBS) $(SBC_LIBS)
libbluez5_util_la_CFLAGS = $(AM_CFLAGS) $(DBUS_CFLAGS) $(SBC_CFLAGS)
+if HAVE_FDK_AAC
+libbluez5_util_la_LIBADD += $(FDK_AAC_LIBS)
+libbluez5_util_la_CFLAGS += $(FDK_AAC_CFLAGS)
+endif
module_bluez5_discover_la_SOURCES = modules/bluetooth/module-bluez5-discover.c
module_bluez5_discover_la_LDFLAGS = $(MODULE_LDFLAGS)
diff --git a/src/modules/bluetooth/a2dp/a2dp-api.h b/src/modules/bluetooth/a2dp/a2dp-api.h
index 1492d29fd..1e601a9c5 100644
--- a/src/modules/bluetooth/a2dp/a2dp-api.h
+++ b/src/modules/bluetooth/a2dp/a2dp-api.h
@@ -37,7 +37,9 @@ typedef struct pa_a2dp_codec pa_a2dp_codec_t;
typedef struct pa_a2dp_config pa_a2dp_config_t;
extern const pa_a2dp_codec_t pa_a2dp_sbc;
-
+#ifdef HAVE_FDK_AAC
+extern const pa_a2dp_codec_t pa_a2dp_aac;
+#endif
/* Run from <pa_a2dp_sink_t>.encode */
@@ -50,9 +52,15 @@ typedef void (*pa_a2dp_source_read_buf_free_cb_t)(const void **read_buf, void *d
typedef enum pa_a2dp_codec_index {
PA_A2DP_SINK_MIN,
PA_A2DP_SINK_SBC,
+#ifdef HAVE_FDK_AAC
+ PA_A2DP_SINK_AAC,
+#endif
PA_A2DP_SINK_MAX,
PA_A2DP_SOURCE_MIN = PA_A2DP_SINK_MAX,
PA_A2DP_SOURCE_SBC,
+#ifdef HAVE_FDK_AAC
+ PA_A2DP_SOURCE_AAC,
+#endif
PA_A2DP_SOURCE_MAX,
PA_A2DP_CODEC_INDEX_UNAVAILABLE
} pa_a2dp_codec_index_t;
diff --git a/src/modules/bluetooth/a2dp/a2dp_aac.c b/src/modules/bluetooth/a2dp/a2dp_aac.c
new file mode 100644
index 000000000..a1d7bf1d2
--- /dev/null
+++ b/src/modules/bluetooth/a2dp/a2dp_aac.c
@@ -0,0 +1,762 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2018 Huang-Huang Bao
+
+ PulseAudio 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.
+
+ PulseAudio 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <arpa/inet.h>
+#include <string.h>
+
+#include <fdk-aac/aacenc_lib.h>
+#include <fdk-aac/aacdecoder_lib.h>
+
+#include <pulse/xmalloc.h>
+
+#include "a2dp-api.h"
+
+#define streq(a, b) (!strcmp((a),(b)))
+
+#define AAC_DEFAULT_BITRATE 320000u
+
+typedef struct aac_info {
+ pa_a2dp_source_read_cb_t read_pcm;
+ pa_a2dp_source_read_buf_free_cb_t read_buf_free;
+
+ bool is_a2dp_sink;
+
+ uint16_t seq_num;
+
+ HANDLE_AACDECODER aacdecoder_handle;
+ bool aacdecoder_handle_opened;
+
+ HANDLE_AACENCODER aacenc_handle;
+ bool aacenc_handle_opened;
+ AACENC_InfoStruct aacenc_info;
+
+ uint32_t bitrate;
+ size_t mtu;
+
+ /* Constant Bitrate: 0
+ * Variable Bitrate: 1-5 (Only effects when both bluetooth devices have vbr support ) */
+ int aac_enc_bitrate_mode;
+ uint32_t aac_afterburner;
+ pa_sample_format_t force_pa_fmt;
+
+ pa_sample_spec sample_spec;
+
+ size_t read_block_size;
+ size_t write_block_size;
+
+} aac_info_t;
+
+static bool pa_aac_decoder_load() {
+ /* AAC libs dynamically linked */
+ return true;
+}
+
+static bool pa_aac_encoder_load() {
+ /* AAC libs dynamically linked */
+ return true;
+}
+
+static bool
+pa_aac_decoder_init(void **codec_data) {
+ aac_info_t *info = pa_xmalloc0(sizeof(aac_info_t));
+ *codec_data = info;
+ info->is_a2dp_sink = true;
+ return true;
+}
+
+static bool
+pa_aac_encoder_init(pa_a2dp_source_read_cb_t read_cb, pa_a2dp_source_read_buf_free_cb_t free_cb, void **codec_data) {
+ aac_info_t *info = pa_xmalloc0(sizeof(aac_info_t));
+ *codec_data = info;
+ info->is_a2dp_sink = false;
+ info->read_pcm = read_cb;
+ info->read_buf_free = free_cb;
+ info->aacenc_handle_opened = false;
+ info->aac_enc_bitrate_mode = 5;
+ info->aac_afterburner = false;
+ info->force_pa_fmt = PA_SAMPLE_INVALID;
+ return true;
+}
+
+/* KEY VALUE DESC DEFAULT
+ * aac_bitrate_mode [1, 5] Variable Bitrate (VBR) (encoder) 5
+ * 0 Constant Bitrate (CBR) (encoder)
+ *
+ * aac_fmt s16 16-bit signed LE (encoder) auto
+ * s32 32-bit signed LE (encoder)
+ * auto
+ *
+ * aac_afterburner <on/off> FDK-AAC afterburner feature (encoder) off
+ */
+static int pa_aac_update_user_config(pa_proplist *user_config, void **codec_data) {
+ aac_info_t *i = *codec_data;
+ const char *aac_bitrate_mode_str, *aac_fmt_str, *aac_afterburner_str;
+ int aac_bitrate_mode = 0, ret = 0;
+ pa_assert(i);
+
+ aac_bitrate_mode_str = pa_proplist_gets(user_config, "aac_bitrate_mode");
+ aac_fmt_str = pa_proplist_gets(user_config, "aac_fmt");
+ aac_afterburner_str = pa_proplist_gets(user_config, "aac_afterburner");
+
+ if (aac_bitrate_mode_str) {
+ aac_bitrate_mode = atoi(aac_bitrate_mode_str);
+
+ if (aac_bitrate_mode >= 0 && aac_bitrate_mode <= 5) {
+ i->aac_enc_bitrate_mode = aac_bitrate_mode;
+ ret++;
+ } else
+ pa_log ("aac_bitrate_mode parameter must in range [0, 5] (found %s)", aac_bitrate_mode_str);
+ }
+
+ if (aac_fmt_str) {
+ if (streq(aac_fmt_str, "s16")) {
+ i->force_pa_fmt = PA_SAMPLE_S16LE;
+ ret++;
+ } else if (streq(aac_fmt_str, "s32")) {
+ i->force_pa_fmt = PA_SAMPLE_S32LE;
+ ret++;
+ } else if (streq(aac_fmt_str, "auto")) {
+ i->force_pa_fmt = PA_SAMPLE_INVALID;
+ ret++;
+ } else
+ pa_log ("aac_fmt parameter must be either s16, s32 or auto (found %s)", aac_fmt_str);
+ }
+
+ if (aac_afterburner_str) {
+ if (streq("on", aac_afterburner_str)) {
+ i->aac_afterburner = 1;
+ ret++;
+ } else if (streq("off", aac_afterburner_str)) {
+ i->aac_afterburner = 0;
+ ret++;
+ } else
+ pa_log ("aac_afterburner parameter must be either on or off (found %s)", aac_afterburner_str);
+ }
+
+ return ret;
+}
+
+static size_t
+pa_aac_decode(const void *read_buf, size_t read_buf_size, void *write_buf, size_t write_buf_size, size_t *_decoded,
+ uint32_t *timestamp, void **codec_data) {
+ const struct rtp_header *header;
+ const UCHAR *p;
+ INT_PCM *d;
+ UINT to_decode, pkt_size;
+ UINT total_written = 0;
+ aac_info_t *aac_info = *codec_data;
+ pa_assert(aac_info);
+
+ header = read_buf;
+ *timestamp = ntohl(header->timestamp);
+
+ p = (UCHAR *) read_buf + sizeof(*header);
+ pkt_size = to_decode = (UINT) (read_buf_size - sizeof(*header));
+
+ d = write_buf;
+
+ *_decoded = 0;
+ while (PA_LIKELY(to_decode > 0)) {
+ CStreamInfo* info;
+
+ AAC_DECODER_ERROR aac_err = aacDecoder_Fill(aac_info->aacdecoder_handle,
+ (UCHAR **) &p, &pkt_size, &to_decode);
+
+ if (PA_UNLIKELY(aac_err != AAC_DEC_OK)) {
+ pa_log_error("aacDecoder_Fill() error 0x%x", aac_err);
+ *_decoded = 0;
+ return 0;
+ }
+
+ while (true) {
+ INT written;
+ aac_err = aacDecoder_DecodeFrame(aac_info->aacdecoder_handle, d, (INT) write_buf_size, 0);
+ if (PA_UNLIKELY(aac_err == AAC_DEC_NOT_ENOUGH_BITS))
+ break;
+ if (PA_UNLIKELY(aac_err != AAC_DEC_OK)){
+ pa_log_error("aacDecoder_DecodeFrame() error 0x%x", aac_err);
+ break;
+ }
+
+ info = aacDecoder_GetStreamInfo(aac_info->aacdecoder_handle);
+ if(PA_UNLIKELY(!info || info->sampleRate <= 0)) {
+ pa_log_error("Invalid stream info");
+ break;
+ }
+
+ written = info->frameSize * info->numChannels * 2;
+ d += written;
+ total_written += (UINT) written;
+ }
+ }
+
+ *_decoded = pkt_size;
+
+ return total_written;
+}
+
+static size_t
+pa_aac_encode(uint32_t timestamp, void *write_buf, size_t write_buf_size, size_t *_encoded, void *read_cb_data,
+ void **codec_data) {
+ struct rtp_header *header;
+ size_t nbytes;
+ uint8_t *d;
+ const uint8_t *p;
+ int to_write;
+ unsigned frame_count;
+ aac_info_t *aac_info = *codec_data;
+ const size_t sample_size = pa_sample_size(&aac_info->sample_spec),
+ frame_size = pa_frame_size(&aac_info->sample_spec);
+ void *in_bufs[1] = {NULL};
+ void *out_bufs[1] = {NULL};
+ int in_bufferIdentifiers[1] = {IN_AUDIO_DATA};
+ int out_bufferIdentifiers[1] = {OUT_BITSTREAM_DATA};
+ int in_bufSizes[1] = {(int) (aac_info->aacenc_info.frameLength * frame_size)};
+ int out_bufSizes[1];
+ int bufElSizes[1] = {(int) sample_size};
+ AACENC_BufDesc in_bufDesc = {
+ .numBufs = 1,
+ .bufs = in_bufs,
+ .bufferIdentifiers = in_bufferIdentifiers,
+ .bufSizes = in_bufSizes,
+ .bufElSizes = bufElSizes
+ };
+ AACENC_BufDesc out_bufDesc = {
+ .numBufs = 1,
+ .bufs = out_bufs,
+ .bufferIdentifiers = out_bufferIdentifiers,
+ .bufSizes = out_bufSizes,
+ .bufElSizes = bufElSizes
+ };
+ AACENC_InArgs in_args = {
+ .numAncBytes = 0,
+ .numInSamples = aac_info->aacenc_info.frameLength * aac_info->aacenc_info.inputChannels
+ };
+ AACENC_OutArgs out_args;
+
+ pa_assert(aac_info);
+
+ header = write_buf;
+
+ frame_count = 0;
+
+ aac_info->read_pcm((const void **) &p, (size_t) in_bufSizes[0], read_cb_data);
+
+ in_bufDesc.bufs[0] = (void *) p;
+
+ d = (uint8_t *) write_buf + sizeof(*header);
+ to_write = (int) (write_buf_size - sizeof(*header));
+ out_bufDesc.bufs[0] = d;
+ out_bufSizes[0] = to_write;
+
+
+ *_encoded = 0;
+
+ while (PA_UNLIKELY(in_args.numInSamples && to_write > 0)) {
+ size_t encoded;
+
+ AACENC_ERROR aac_err = aacEncEncode(aac_info->aacenc_handle, &in_bufDesc, &out_bufDesc, &in_args, &out_args);
+
+ if (PA_UNLIKELY(aac_err != AACENC_OK)) {
+ pa_log_error("AAC encoding error, 0x%x", aac_err);
+ aac_info->read_buf_free((const void **) &p, read_cb_data);
+ *_encoded = 0;
+ return 0;
+ }
+
+ encoded = out_args.numInSamples * sample_size;
+
+ in_args.numInSamples -= out_args.numInSamples;
+ p += encoded;
+ *_encoded += encoded;
+
+ to_write -= out_args.numOutBytes;
+ d += out_args.numOutBytes;
+
+ frame_count++;
+ }
+
+ aac_info->read_buf_free((const void **) &p, read_cb_data);
+
+ memset(write_buf, 0, sizeof(*header));
+ header->v = 2;
+ header->pt = 1;
+ header->sequence_number = htons(aac_info->seq_num++);
+ header->timestamp = htonl(timestamp);
+ header->ssrc = htonl(1);
+
+ nbytes = d - (uint8_t *) write_buf;
+
+ return nbytes;
+}
+
+static void
+pa_aac_config_transport(pa_sample_spec default_sample_spec, const void *configuration, size_t configuration_size,
+ pa_sample_spec *sample_spec, void **codec_data) {
+ AACENC_ERROR aac_err;
+ aac_info_t *aac_info = *codec_data;
+ a2dp_aac_t *config = (a2dp_aac_t *) configuration;
+ UINT aot, sample_rate, channels;
+ pa_sample_format_t fmt;
+
+ pa_assert(aac_info);
+ pa_assert_se(configuration_size == sizeof(*config));
+
+ aac_info->bitrate = PA_MIN(AAC_DEFAULT_BITRATE, ((uint32_t) AAC_GET_BITRATE(*config)));
+
+
+ if(aac_info->is_a2dp_sink)
+ sample_spec->format = PA_SAMPLE_S16LE;
+ else{
+ if (aac_info->force_pa_fmt == PA_SAMPLE_INVALID)
+ fmt = default_sample_spec.format;
+ else
+ fmt = aac_info->force_pa_fmt;
+
+ switch (fmt) {
+ case PA_SAMPLE_S24LE:
+ case PA_SAMPLE_S24BE:
+ case PA_SAMPLE_S24_32LE:
+ case PA_SAMPLE_S24_32BE:
+ case PA_SAMPLE_S32LE:
+ case PA_SAMPLE_S32BE:
+ case PA_SAMPLE_FLOAT32LE:
+ case PA_SAMPLE_FLOAT32BE:
+ sample_spec->format = PA_SAMPLE_S32LE;
+ break;
+ default:
+ sample_spec->format = PA_SAMPLE_S16LE;
+ }
+ }
+
+ switch (config->object_type) {
+ case AAC_OBJECT_TYPE_MPEG2_AAC_LC:
+ aot = AOT_AAC_LC;
+ break;
+ case AAC_OBJECT_TYPE_MPEG4_AAC_LC:
+ aot = AOT_AAC_LC;
+ break;
+ case AAC_OBJECT_TYPE_MPEG4_AAC_LTP:
+ aot = AOT_AAC_LTP;
+ break;
+ case AAC_OBJECT_TYPE_MPEG4_AAC_SCA:
+ aot = AOT_AAC_SCAL;
+ break;
+ default:
+ pa_log_error("Invalid AAC object type");
+ pa_assert_not_reached();
+ }
+
+ switch (AAC_GET_FREQUENCY(*config)) {
+ case AAC_SAMPLING_FREQ_8000:
+ sample_rate = 8000;
+ sample_spec->rate = 8000;
+ break;
+ case AAC_SAMPLING_FREQ_11025:
+ sample_rate = 11025;
+ sample_spec->rate = 11025;
+ break;
+ case AAC_SAMPLING_FREQ_12000:
+ sample_rate = 12000;
+ sample_spec->rate = 12000;
+ break;
+ case AAC_SAMPLING_FREQ_16000:
+ sample_rate = 16000;
+ sample_spec->rate = 16000;
+ break;
+ case AAC_SAMPLING_FREQ_22050:
+ sample_rate = 22050;
+ sample_spec->rate = 22050;
+ break;
+ case AAC_SAMPLING_FREQ_24000:
+ sample_rate = 24000;
+ sample_spec->rate = 24000;
+ break;
+ case AAC_SAMPLING_FREQ_32000:
+ sample_rate = 32000;
+ sample_spec->rate = 32000;
+ break;
+ case AAC_SAMPLING_FREQ_44100:
+ sample_rate = 44100;
+ sample_spec->rate = 44100;
+ break;
+ case AAC_SAMPLING_FREQ_48000:
+ sample_rate = 48000;
+ sample_spec->rate = 48000;
+ break;
+ case AAC_SAMPLING_FREQ_64000:
+ sample_rate = 64000;
+ sample_spec->rate = 64000;
+ break;
+ case AAC_SAMPLING_FREQ_88200:
+ sample_rate = 88200;
+ sample_spec->rate = 88200;
+ break;
+ case AAC_SAMPLING_FREQ_96000:
+ sample_rate = 96000;
+ sample_spec->rate = 96000;
+ break;
+ default:
+ pa_log_error("Invalid AAC frequency");
+ pa_assert_not_reached();
+ }
+
+ switch (config->channels) {
+ case AAC_CHANNELS_1:
+ channels = MODE_1;
+ sample_spec->channels = 1;
+ break;
+ case AAC_CHANNELS_2:
+ channels = MODE_2;
+ sample_spec->channels = 2;
+ break;
+ default:
+ pa_log_error("Invalid AAC channel mode");
+ pa_assert_not_reached();
+ }
+
+ aac_info->sample_spec = *sample_spec;
+
+ /* AAC SINK */
+ if (aac_info->is_a2dp_sink) {
+ if (!aac_info->aacdecoder_handle_opened) {
+ aac_info->aacdecoder_handle = aacDecoder_Open(TT_MP4_LATM_MCP1, 1);
+ aac_info->aacdecoder_handle_opened = true;
+ }
+
+ pa_assert_se(AAC_DEC_OK == aacDecoder_SetParam(aac_info->aacdecoder_handle, AAC_PCM_MIN_OUTPUT_CHANNELS,
+ sample_spec->channels));
+ pa_assert_se(AAC_DEC_OK == aacDecoder_SetParam(aac_info->aacdecoder_handle, AAC_PCM_MAX_OUTPUT_CHANNELS,
+ sample_spec->channels));
+
+ return;
+ }
+
+
+ /* AAC SOURCE */
+
+ if (!aac_info->aacenc_handle_opened) {
+ aac_err = aacEncOpen(&aac_info->aacenc_handle, 0, 2);
+
+ if (aac_err != AACENC_OK) {
+ pa_log_error("Cannot open AAC encoder handle: AAC error 0x%x", aac_err);
+ pa_assert_not_reached();
+ }
+ aac_info->aacenc_handle_opened = true;
+ }
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_AOT, aot);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_SAMPLERATE, sample_rate);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_CHANNELMODE, channels);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ if (config->vbr) {
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_BITRATEMODE,
+ (UINT) aac_info->aac_enc_bitrate_mode);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+ }
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_AUDIOMUXVER, 2);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_SIGNALING_MODE, 1);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_BITRATE, aac_info->bitrate);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_TRANSMUX, TT_MP4_LATM_MCP1);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_HEADER_PERIOD, 1);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_AFTERBURNER, aac_info->aac_afterburner);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncEncode(aac_info->aacenc_handle, NULL, NULL, NULL, NULL);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ pa_assert_se(AACENC_OK == aacEncInfo(aac_info->aacenc_handle, &aac_info->aacenc_info));
+
+ pa_assert(aac_info->aacenc_info.inputChannels == aac_info->sample_spec.channels);
+
+};
+
+static void pa_aac_get_read_block_size(size_t read_link_mtu, size_t *read_block_size, void **codec_data) {
+ aac_info_t *aac_info = *codec_data;
+ pa_assert(aac_info);
+
+ aac_info->mtu = read_link_mtu;
+
+ /* aacEncoder.pdf Section 3.2.1
+ * AAC-LC audio frame contains 1024 PCM samples per channel */
+ *read_block_size = 1024 * pa_frame_size(&aac_info->sample_spec);
+ aac_info->read_block_size = *read_block_size;
+};
+
+static void pa_aac_get_write_block_size(size_t write_link_mtu, size_t *write_block_size, void **codec_data) {
+ aac_info_t *aac_info = *codec_data;
+ pa_assert(aac_info);
+
+ aac_info->mtu = write_link_mtu;
+
+ /* aacEncoder.pdf section 3.2.1
+ * AAC-LC audio frame contains 1024 PCM samples per channel */
+ *write_block_size = 1024 * pa_frame_size(&aac_info->sample_spec);
+ aac_info->write_block_size = *write_block_size;
+};
+
+static void pa_aac_setup_stream(void **codec_data) {
+ AACENC_ERROR aac_err;
+ aac_info_t *aac_info = *codec_data;
+ uint32_t max_bitrate;
+ pa_assert(aac_info);
+
+ max_bitrate = (uint32_t) ((8 * (aac_info->mtu - sizeof(struct rtp_header)) * aac_info->sample_spec.rate) / 1024);
+
+ aac_info->bitrate = PA_MIN(max_bitrate, aac_info->bitrate);
+
+ pa_log_debug("Maximum AAC transmission bitrate: %d bps; Bitrate in use: %d bps", max_bitrate, aac_info->bitrate);
+
+ /* AAC SINK */
+ if (aac_info->is_a2dp_sink) {
+ return;
+ }
+
+
+ /* AAC SOURCE */
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_BITRATE, aac_info->bitrate);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+ aac_err = aacEncoder_SetParam(aac_info->aacenc_handle, AACENC_PEAK_BITRATE, (UINT) max_bitrate);
+ if (aac_err != AACENC_OK)
+ pa_assert_not_reached();
+
+};
+
+static void pa_aac_free(void **codec_data) {
+ aac_info_t *aac_info = *codec_data;
+ if (!aac_info)
+ return;
+
+ if (aac_info->aacenc_handle_opened)
+ aacEncClose(&aac_info->aacenc_handle);
+
+ if (aac_info->aacdecoder_handle_opened)
+ aacDecoder_Close(aac_info->aacdecoder_handle);
+
+ pa_xfree(aac_info);
+ *codec_data = NULL;
+
+};
+
+static size_t pa_aac_get_capabilities(void **_capabilities) {
+ a2dp_aac_t *capabilities = pa_xmalloc0(sizeof(a2dp_aac_t));
+
+ capabilities->object_type = AAC_OBJECT_TYPE_MPEG2_AAC_LC | AAC_OBJECT_TYPE_MPEG4_AAC_LC;
+ capabilities->channels = AAC_CHANNELS_1 | AAC_CHANNELS_2;
+ AAC_SET_BITRATE(*capabilities, AAC_DEFAULT_BITRATE);
+ AAC_SET_FREQUENCY(*capabilities, (AAC_SAMPLING_FREQ_8000 | AAC_SAMPLING_FREQ_11025 | AAC_SAMPLING_FREQ_12000 |
+ AAC_SAMPLING_FREQ_16000 | AAC_SAMPLING_FREQ_22050 | AAC_SAMPLING_FREQ_24000 |
+ AAC_SAMPLING_FREQ_32000 | AAC_SAMPLING_FREQ_44100 | AAC_SAMPLING_FREQ_48000 |
+ AAC_SAMPLING_FREQ_64000 | AAC_SAMPLING_FREQ_88200 | AAC_SAMPLING_FREQ_96000));
+ capabilities->vbr = 1;
+ *_capabilities = capabilities;
+
+ return sizeof(*capabilities);
+};
+
+static size_t
+pa_aac_select_configuration(const pa_sample_spec default_sample_spec, const uint8_t *supported_capabilities,
+ const size_t capabilities_size, void **configuration) {
+ a2dp_aac_t *cap = (a2dp_aac_t *) supported_capabilities;
+ a2dp_aac_t *config = pa_xmalloc0(sizeof(a2dp_aac_t));
+ pa_a2dp_freq_cap_t aac_freq_cap, aac_freq_table[] = {
+ {8000U, AAC_SAMPLING_FREQ_8000},
+ {11025U, AAC_SAMPLING_FREQ_11025},
+ {12000U, AAC_SAMPLING_FREQ_12000},
+ {16000U, AAC_SAMPLING_FREQ_16000},
+ {22050U, AAC_SAMPLING_FREQ_22050},
+ {24000U, AAC_SAMPLING_FREQ_24000},
+ {32000U, AAC_SAMPLING_FREQ_32000},
+ {44100U, AAC_SAMPLING_FREQ_44100},
+ {48000U, AAC_SAMPLING_FREQ_48000},
+ {64000U, AAC_SAMPLING_FREQ_64000},
+ {88200U, AAC_SAMPLING_FREQ_88200},
+ {96000U, AAC_SAMPLING_FREQ_96000}
+ };
+
+ if (capabilities_size != sizeof(a2dp_aac_t))
+ return 0;
+
+ if (!pa_a2dp_select_cap_frequency(AAC_GET_FREQUENCY(*cap), default_sample_spec, aac_freq_table,
+ PA_ELEMENTSOF(aac_freq_table), &aac_freq_cap))
+ return 0;
+
+ AAC_SET_FREQUENCY(*config, aac_freq_cap.cap);
+
+ AAC_SET_BITRATE(*config, AAC_GET_BITRATE(*cap));
+
+ if (default_sample_spec.channels <= 1) {
+ if (cap->channels & AAC_CHANNELS_1)
+ config->channels = AAC_CHANNELS_1;
+ else if (cap->channels & AAC_CHANNELS_2)
+ config->channels = AAC_CHANNELS_2;
+ else {
+ pa_log_error("No supported channel modes");
+ return 0;
+ }
+ }
+
+ if (default_sample_spec.channels >= 2) {
+ if (cap->channels & AAC_CHANNELS_2)
+ config->channels = AAC_CHANNELS_2;
+ else if (cap->channels & AAC_CHANNELS_1)
+ config->channels = AAC_CHANNELS_1;
+ else {
+ pa_log_error("No supported channel modes");
+ return 0;
+ }
+ }
+
+ if (cap->object_type & AAC_OBJECT_TYPE_MPEG4_AAC_LC)
+ config->object_type = AAC_OBJECT_TYPE_MPEG4_AAC_LC;
+ else if (cap->object_type & AAC_OBJECT_TYPE_MPEG2_AAC_LC)
+ config->object_type = AAC_OBJECT_TYPE_MPEG2_AAC_LC;
+ else {
+ pa_log_error("No supported aac object type");
+ return 0;
+ }
+
+ config->vbr = cap->vbr;
+
+ *configuration = config;
+ return sizeof(*config);
+};
+
+static void pa_aac_free_capabilities(void **capabilities) {
+ if (!capabilities || !*capabilities)
+ return;
+ pa_xfree(*capabilities);
+ *capabilities = NULL;
+}
+
+static bool pa_aac_validate_configuration(const uint8_t *selected_configuration, const size_t configuration_size) {
+ a2dp_aac_t *c = (a2dp_aac_t *) selected_configuration;
+
+ if (configuration_size != sizeof(a2dp_aac_t)) {
+ pa_log_error("AAC configuration array of invalid size");
+ return false;
+ }
+
+ switch (c->object_type) {
+ case AAC_OBJECT_TYPE_MPEG2_AAC_LC:
+ case AAC_OBJECT_TYPE_MPEG4_AAC_LC:
+ break;
+ default:
+ pa_log_error("Invalid object type in AAC configuration");
+ return false;
+ }
+
+ switch (AAC_GET_FREQUENCY(*c)) {
+ case AAC_SAMPLING_FREQ_8000:
+ case AAC_SAMPLING_FREQ_11025:
+ case AAC_SAMPLING_FREQ_12000:
+ case AAC_SAMPLING_FREQ_16000:
+ case AAC_SAMPLING_FREQ_22050:
+ case AAC_SAMPLING_FREQ_24000:
+ case AAC_SAMPLING_FREQ_32000:
+ case AAC_SAMPLING_FREQ_44100:
+ case AAC_SAMPLING_FREQ_48000:
+ case AAC_SAMPLING_FREQ_64000:
+ case AAC_SAMPLING_FREQ_88200:
+ case AAC_SAMPLING_FREQ_96000:
+ break;
+ default:
+ pa_log_error("Invalid sampling frequency in AAC configuration");
+ return false;
+ }
+
+ switch (c->channels) {
+ case AAC_CHANNELS_1:
+ case AAC_CHANNELS_2:
+ break;
+ default:
+ pa_log_error("Invalid channel mode in AAC Configuration");
+ return false;
+ }
+
+ return true;
+};
+
+
+static pa_a2dp_source_t pa_aac_source = {
+ .encoder_load = pa_aac_encoder_load,
+ .init = pa_aac_encoder_init,
+ .update_user_config = pa_aac_update_user_config,
+ .encode = pa_aac_encode,
+ .config_transport=pa_aac_config_transport,
+ .get_block_size=pa_aac_get_write_block_size,
+ .setup_stream = pa_aac_setup_stream,
+ .set_tx_length = NULL,
+ .decrease_quality = NULL,
+ .free = pa_aac_free
+};
+
+static pa_a2dp_sink_t pa_aac_sink = {
+ .decoder_load = pa_aac_decoder_load,
+ .init = pa_aac_decoder_init,
+ .update_user_config = NULL,
+ .config_transport=pa_aac_config_transport,
+ .get_block_size=pa_aac_get_read_block_size,
+ .setup_stream = pa_aac_setup_stream,
+ .decode = pa_aac_decode,
+ .free = pa_aac_free
+};
+
+const pa_a2dp_codec_t pa_a2dp_aac = {
+ .name = "AAC",
+ .codec = A2DP_CODEC_MPEG24,
+ .vendor_codec = NULL,
+ .a2dp_sink = &pa_aac_sink,
+ .a2dp_source = &pa_aac_source,
+ .get_capabilities = pa_aac_get_capabilities,
+ .select_configuration = pa_aac_select_configuration,
+ .free_capabilities = pa_aac_free_capabilities,
+ .free_configuration = pa_aac_free_capabilities,
+ .validate_configuration = pa_aac_validate_configuration
+};
diff --git a/src/modules/bluetooth/a2dp/a2dp_util.c b/src/modules/bluetooth/a2dp/a2dp_util.c
index cc9382f2e..edd28b5cc 100644
--- a/src/modules/bluetooth/a2dp/a2dp_util.c
+++ b/src/modules/bluetooth/a2dp/a2dp_util.c
@@ -30,6 +30,9 @@
#define A2DP_SBC_SRC_ENDPOINT A2DP_SOURCE_ENDPOINT "/SBC"
#define A2DP_SBC_SNK_ENDPOINT A2DP_SINK_ENDPOINT "/SBC"
+#define A2DP_AAC_SRC_ENDPOINT A2DP_SOURCE_ENDPOINT "/AAC"
+#define A2DP_AAC_SNK_ENDPOINT A2DP_SINK_ENDPOINT "/AAC"
+
#define A2DP_VENDOR_SRC_ENDPOINT A2DP_SOURCE_ENDPOINT "/VENDOR"
#define A2DP_VENDOR_SNK_ENDPOINT A2DP_SINK_ENDPOINT "/VENDOR"
@@ -209,6 +212,14 @@ void pa_a2dp_codec_index_to_endpoint(pa_a2dp_codec_index_t codec_index, const ch
case PA_A2DP_SOURCE_SBC:
*endpoint = A2DP_SBC_SRC_ENDPOINT;
break;
+#ifdef HAVE_FDK_AAC
+ case PA_A2DP_SINK_AAC:
+ *endpoint = A2DP_AAC_SNK_ENDPOINT;
+ break;
+ case PA_A2DP_SOURCE_AAC:
+ *endpoint = A2DP_AAC_SRC_ENDPOINT;
+ break;
+#endif
default:
*endpoint = NULL;
}
@@ -219,6 +230,12 @@ void pa_a2dp_endpoint_to_codec_index(const char *endpoint, pa_a2dp_codec_index_t
*codec_index = PA_A2DP_SINK_SBC;
else if (streq(endpoint, A2DP_SBC_SRC_ENDPOINT))
*codec_index = PA_A2DP_SOURCE_SBC;
+#ifdef HAVE_FDK_AAC
+ else if (streq(endpoint, A2DP_AAC_SNK_ENDPOINT))
+ *codec_index = PA_A2DP_SINK_AAC;
+ else if (streq(endpoint, A2DP_AAC_SRC_ENDPOINT))
+ *codec_index = PA_A2DP_SOURCE_AAC;
+#endif
else
*codec_index = PA_A2DP_CODEC_INDEX_UNAVAILABLE;
};
@@ -229,6 +246,12 @@ void pa_a2dp_codec_index_to_a2dp_codec(pa_a2dp_codec_index_t codec_index, const
case PA_A2DP_SOURCE_SBC:
*a2dp_codec = &pa_a2dp_sbc;
break;
+#ifdef HAVE_FDK_AAC
+ case PA_A2DP_SINK_AAC:
+ case PA_A2DP_SOURCE_AAC:
+ *a2dp_codec = &pa_a2dp_aac;
+ break;
+#endif
default:
*a2dp_codec = NULL;
}
@@ -244,6 +267,11 @@ void pa_a2dp_a2dp_codec_to_codec_index(const pa_a2dp_codec_t *a2dp_codec, bool i
case A2DP_CODEC_SBC:
*codec_index = is_a2dp_sink ? PA_A2DP_SINK_SBC : PA_A2DP_SOURCE_SBC;
return;
+#ifdef HAVE_FDK_AAC
+ case A2DP_CODEC_MPEG24:
+ *codec_index = is_a2dp_sink ? PA_A2DP_SINK_AAC : PA_A2DP_SOURCE_AAC;
+ return;
+#endif
case A2DP_CODEC_VENDOR:
if (!a2dp_codec->vendor_codec) {
*codec_index = PA_A2DP_CODEC_INDEX_UNAVAILABLE;
@@ -262,6 +290,11 @@ pa_a2dp_get_a2dp_codec(uint8_t codec, const a2dp_vendor_codec_t *vendor_codec, c
case A2DP_CODEC_SBC:
*a2dp_codec = &pa_a2dp_sbc;
return;
+#ifdef HAVE_FDK_AAC
+ case A2DP_CODEC_MPEG24:
+ *a2dp_codec = &pa_a2dp_aac;
+ return;
+#endif
case A2DP_CODEC_VENDOR:
if (!vendor_codec) {
*a2dp_codec = NULL;
--
2.19.2
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