Add support for AMR-WB encoding via libvo-amrwbenc

The wrapper code is based on the libamr wrapper removed in SVN rev 19365.
Signed-off-by: Martin Storsjö <martin@martin.st>

Changelog

@@ -84,6 +84,7 @@ version <next>:
 - Chronomaster DFA decoder
 - Mobotix MxPEG decoder
 - AAC encoding via libvo-aacenc
+- AMR-WB encoding via libvo-amrwbenc
 
 
 version 0.6:

configure

@@ -179,6 +179,7 @@ External library support:
   --enable-libspeex        enable Speex decoding via libspeex [no]
   --enable-libtheora       enable Theora encoding via libtheora [no]
   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
+  --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
   --enable-libvorbis       enable Vorbis encoding via libvorbis,
                            native implementation exists [no]
   --enable-libvpx          enable VP8 support via libvpx [no]
@@ -939,6 +940,7 @@ CONFIG_LIST="
     libspeex
     libtheora
     libvo_aacenc
+    libvo_amrwbenc
     libvorbis
     libvpx
     libx264
@@ -1387,6 +1389,7 @@ libschroedinger_encoder_deps="libschroedinger"
 libspeex_decoder_deps="libspeex"
 libtheora_encoder_deps="libtheora"
 libvo_aacenc_encoder_deps="libvo_aacenc"
+libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
 libvorbis_encoder_deps="libvorbis"
 libvpx_decoder_deps="libvpx"
 libvpx_encoder_deps="libvpx"
@@ -2529,6 +2532,7 @@ die_license_disabled nonfree libfaac
 die_license_disabled version3 libopencore_amrnb
 die_license_disabled version3 libopencore_amrwb
 die_license_disabled version3 libvo_aacenc
+die_license_disabled version3 libvo_amrwbenc
 
 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
 
@@ -2869,6 +2873,7 @@ enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schr
 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
+enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
 enabled libvpx     && {
     enabled libvpx_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
@@ -3138,6 +3143,7 @@ echo "libspeex enabled          ${libspeex-no}"
 echo "libtheora enabled         ${libtheora-no}"
 echo "libva enabled             ${vaapi-no}"
 echo "libvo-aacenc support      ${libvo_aacenc-no}"
+echo "libvo-amrwbenc support    ${libvo_amrwbenc-no}"
 echo "libvorbis enabled         ${libvorbis-no}"
 echo "libvpx enabled            ${libvpx-no}"
 echo "libx264 enabled           ${libx264-no}"

doc/general.texi

@@ -588,7 +588,8 @@ following image formats are supported:
 @item ADPCM Yamaha           @tab  X  @tab  X
 @item AMR-NB                 @tab  E  @tab  X
     @tab encoding supported through external library libopencore-amrnb
-@item AMR-WB                 @tab     @tab  X
+@item AMR-WB                 @tab  E  @tab  X
+    @tab encoding supported through external library libvo-amrwbenc
 @item Apple lossless audio   @tab  X  @tab  X
     @tab QuickTime fourcc 'alac'
 @item Atrac 1                @tab     @tab  X

libavcodec/Makefile

@@ -569,6 +569,7 @@ OBJS-$(CONFIG_LIBSCHROEDINGER_ENCODER)    += libschroedingerenc.o \
 OBJS-$(CONFIG_LIBSPEEX_DECODER)           += libspeexdec.o
 OBJS-$(CONFIG_LIBTHEORA_ENCODER)          += libtheoraenc.o
 OBJS-$(CONFIG_LIBVO_AACENC_ENCODER)       += libvo-aacenc.o mpeg4audio.o
+OBJS-$(CONFIG_LIBVO_AMRWBENC_ENCODER)     += libvo-amrwbenc.o
 OBJS-$(CONFIG_LIBVORBIS_ENCODER)          += libvorbis.o vorbis_data.o
 OBJS-$(CONFIG_LIBVPX_DECODER)             += libvpxdec.o
 OBJS-$(CONFIG_LIBVPX_ENCODER)             += libvpxenc.o

libavcodec/allcodecs.c

@@ -367,6 +367,7 @@ void avcodec_register_all(void)
     REGISTER_DECODER (LIBSPEEX, libspeex);
     REGISTER_ENCODER (LIBTHEORA, libtheora);
     REGISTER_ENCODER (LIBVO_AACENC, libvo_aacenc);
+    REGISTER_ENCODER (LIBVO_AMRWBENC, libvo_amrwbenc);
     REGISTER_ENCODER (LIBVORBIS, libvorbis);
     REGISTER_ENCDEC  (LIBVPX, libvpx);
     REGISTER_ENCODER (LIBX264, libx264);

libavcodec/libvo-amrwbenc.c

+/*
+ * AMR Audio encoder stub
+ * Copyright (c) 2003 the ffmpeg project
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <vo-amrwbenc/enc_if.h>
+
+#include "avcodec.h"
+
+static const char wb_bitrate_unsupported[] =
+    "bitrate not supported: use one of 6.6k, 8.85k, 12.65k, 14.25k, 15.85k, "
+    "18.25k, 19.85k, 23.05k, or 23.85k\n";
+
+typedef struct AMRWB_bitrates {
+    int rate;
+    int mode;
+} AMRWB_bitrates;
+
+typedef struct AMRWBContext {
+    void  *state;
+    int    mode;
+    int    allow_dtx;
+} AMRWBContext;
+
+static int getWBBitrateMode(int bitrate)
+{
+    /* make the correspondance between bitrate and mode */
+    AMRWB_bitrates rates[] = { { 6600, 0},
+                               { 8850, 1},
+                               {12650, 2},
+                               {14250, 3},
+                               {15850, 4},
+                               {18250, 5},
+                               {19850, 6},
+                               {23050, 7},
+                               {23850, 8}, };
+    int i;
+
+    for (i = 0; i < 9; i++)
+        if (rates[i].rate == bitrate)
+            return rates[i].mode;
+    /* no bitrate matching, return an error */
+    return -1;
+}
+
+static av_cold int amr_wb_encode_init(AVCodecContext *avctx)
+{
+    AMRWBContext *s = avctx->priv_data;
+
+    if (avctx->sample_rate != 16000) {
+        av_log(avctx, AV_LOG_ERROR, "Only 16000Hz sample rate supported\n");
+        return -1;
+    }
+
+    if (avctx->channels != 1) {
+        av_log(avctx, AV_LOG_ERROR, "Only mono supported\n");
+        return -1;
+    }
+
+    if ((s->mode = getWBBitrateMode(avctx->bit_rate)) < 0) {
+        av_log(avctx, AV_LOG_ERROR, wb_bitrate_unsupported);
+        return -1;
+    }
+
+    avctx->frame_size  = 320;
+    avctx->coded_frame = avcodec_alloc_frame();
+
+    s->state     = E_IF_init();
+    s->allow_dtx = 0;
+
+    return 0;
+}
+
+static int amr_wb_encode_close(AVCodecContext *avctx)
+{
+    AMRWBContext *s = avctx->priv_data;
+
+    E_IF_exit(s->state);
+    av_freep(&avctx->coded_frame);
+    return 0;
+}
+
+static int amr_wb_encode_frame(AVCodecContext *avctx,
+                               unsigned char *frame/*out*/,
+                               int buf_size, void *data/*in*/)
+{
+    AMRWBContext *s = avctx->priv_data;
+    int size;
+
+    if ((s->mode = getWBBitrateMode(avctx->bit_rate)) < 0) {
+        av_log(avctx, AV_LOG_ERROR, wb_bitrate_unsupported);
+        return -1;
+    }
+    size = E_IF_encode(s->state, s->mode, data, frame, s->allow_dtx);
+    return size;
+}
+
+AVCodec ff_libvo_amrwbenc_encoder = {
+    "libvo_amrwbenc",
+    CODEC_TYPE_AUDIO,
+    CODEC_ID_AMR_WB,
+    sizeof(AMRWBContext),
+    amr_wb_encode_init,
+    amr_wb_encode_frame,
+    amr_wb_encode_close,
+    NULL,
+    .sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE},
+    .long_name = NULL_IF_CONFIG_SMALL("libvo-amrwbenc Adaptive Multi-Rate "
+                                      "(AMR) Wide-Band"),
+};
+

libavcodec/version.h

@@ -21,7 +21,7 @@
 #define AVCODEC_VERSION_H
 
 #define LIBAVCODEC_VERSION_MAJOR 52
-#define LIBAVCODEC_VERSION_MINOR 118
+#define LIBAVCODEC_VERSION_MINOR 119
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \