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libgsm warper by (Alban Bedel: albeu, free fr)
Originally committed as revision 4302 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
parent
cefe0607dd
commit
bb4c2140c2
10
configure
vendored
10
configure
vendored
@ -22,6 +22,7 @@ echo " --enable-theora enable theora support via libtheora [default=no
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echo " --enable-faad enable faad support via libfaad [default=no]"
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echo " --enable-faadbin build faad support with runtime linking [default=no]"
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echo " --enable-faac enable faac support via libfaac [default=no]"
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echo " --enable-libgsm enable gsm support via libgsm [default=no]"
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echo " --enable-xvid enable xvid support via xvidcore [default=no]"
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echo " --enable-x264 enable H.264 encoding via x264 [default=no]"
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echo " --enable-mingw32 enable mingw32 native/cross windows compile"
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@ -158,6 +159,7 @@ dv1394="yes"
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dc1394="no"
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network="yes"
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zlib="yes"
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libgsm="no"
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mp3lame="no"
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libogg="no"
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vorbis="no"
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@ -447,6 +449,8 @@ for opt do
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;;
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--enable-shared-pp) shared_pp="yes"
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;;
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--enable-libgsm) libgsm="yes"
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;;
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--enable-mp3lame) mp3lame="yes"
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;;
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--enable-libogg) libogg="yes"
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@ -1123,6 +1127,7 @@ echo "AltiVec enabled $altivec"
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fi
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echo "gprof enabled $gprof"
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echo "zlib enabled $zlib"
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echo "libgsm enabled $libgsm"
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echo "mp3lame enabled $mp3lame"
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echo "libogg enabled $libogg"
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echo "vorbis enabled $vorbis"
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@ -1420,6 +1425,11 @@ if test "$zlib" = "yes" ; then
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echo "CONFIG_ZLIB=yes" >> config.mak
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fi
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if test "$libgsm" = "yes" ; then
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echo "#define CONFIG_LIBGSM 1" >> $TMPH
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echo "CONFIG_LIBGSM=yes" >> config.mak
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fi
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if test "$mp3lame" = "yes" ; then
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echo "#define CONFIG_MP3LAME 1" >> $TMPH
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echo "CONFIG_MP3LAME=yes" >> config.mak
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@ -291,6 +291,11 @@ endif
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EXTRALIBS += -logg
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endif
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ifeq ($(CONFIG_LIBGSM),yes)
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OBJS += libgsm.o
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EXTRALIBS += -lgsm
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endif
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ifeq ($(TARGET_GPROF),yes)
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CFLAGS+=-p
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LDFLAGS+=-p
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@ -186,6 +186,9 @@ void avcodec_register_all(void)
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register_avcodec(&x264_encoder);
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#endif //CONFIG_X264_ENCODER
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#endif
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#ifdef CONFIG_LIBGSM
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register_avcodec(&libgsm_encoder);
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#endif //CONFIG_LIBGSM
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#endif /* CONFIG_ENCODERS */
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#ifdef CONFIG_RAWVIDEO_ENCODER
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register_avcodec(&rawvideo_encoder);
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@ -482,6 +485,9 @@ void avcodec_register_all(void)
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#ifdef CONFIG_VORBIS_DECODER
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register_avcodec(&vorbis_decoder);
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#endif
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#ifdef CONFIG_LIBGSM
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register_avcodec(&libgsm_decoder);
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#endif //CONFIG_LIBGSM
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#endif /* CONFIG_DECODERS */
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#ifdef AMR_NB
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@ -172,6 +172,7 @@ enum CodecID {
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CODEC_ID_SHORTEN,
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CODEC_ID_ALAC,
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CODEC_ID_WESTWOOD_SND1,
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CODEC_ID_GSM,
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CODEC_ID_OGGTHEORA= 0x16000,
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@ -2021,6 +2022,8 @@ extern AVCodec ws_snd1_decoder;
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extern AVCodec indeo2_decoder;
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extern AVCodec vorbis_decoder;
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extern AVCodec fraps_decoder;
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extern AVCodec libgsm_encoder;
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extern AVCodec libgsm_decoder;
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/* pcm codecs */
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#define PCM_CODEC(id, name) \
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95
libavcodec/libgsm.c
Normal file
95
libavcodec/libgsm.c
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@ -0,0 +1,95 @@
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/*
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* Interface to libgsm for gsm encoding/decoding
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* Copyright (c) 2005 Alban Bedel <albeu@free.fr>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file libgsm.c
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* Interface to libgsm for gsm encoding/decoding
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*/
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#include "avcodec.h"
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#include <gsm.h>
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// gsm.h miss some essential constants
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#define GSM_BLOCK_SIZE 33
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#define GSM_FRAME_SIZE 160
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static int libgsm_init(AVCodecContext *avctx) {
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if (avctx->channels > 1 || avctx->sample_rate != 8000)
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return -1;
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avctx->frame_size = GSM_FRAME_SIZE;
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avctx->block_align = GSM_BLOCK_SIZE;
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avctx->priv_data = gsm_create();
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avctx->coded_frame= avcodec_alloc_frame();
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avctx->coded_frame->key_frame= 1;
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return 0;
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}
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static int libgsm_close(AVCodecContext *avctx) {
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gsm_destroy(avctx->priv_data);
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avctx->priv_data = NULL;
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return 0;
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}
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static int libgsm_encode_frame(AVCodecContext *avctx,
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unsigned char *frame, int buf_size, void *data) {
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// we need a full block
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if(buf_size < GSM_BLOCK_SIZE) return 0;
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gsm_encode(avctx->priv_data,data,frame);
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return GSM_BLOCK_SIZE;
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}
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AVCodec libgsm_encoder = {
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"gsm",
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CODEC_TYPE_AUDIO,
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CODEC_ID_GSM,
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0,
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libgsm_init,
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libgsm_encode_frame,
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libgsm_close,
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};
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static int libgsm_decode_frame(AVCodecContext *avctx,
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void *data, int *data_size,
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uint8_t *buf, int buf_size) {
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if(buf_size < GSM_BLOCK_SIZE) return 0;
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if(gsm_decode(avctx->priv_data,buf,data)) return -1;
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*data_size = GSM_FRAME_SIZE*2;
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return GSM_BLOCK_SIZE;
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}
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AVCodec libgsm_decoder = {
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"gsm",
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CODEC_TYPE_AUDIO,
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CODEC_ID_GSM,
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0,
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libgsm_init,
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NULL,
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libgsm_close,
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libgsm_decode_frame,
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};
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