diff options
Diffstat (limited to 'tinyDAV/src/codecs/speex/tdav_codec_speex.c')
| -rw-r--r-- | tinyDAV/src/codecs/speex/tdav_codec_speex.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/tinyDAV/src/codecs/speex/tdav_codec_speex.c b/tinyDAV/src/codecs/speex/tdav_codec_speex.c new file mode 100644 index 0000000..93565aa --- /dev/null +++ b/tinyDAV/src/codecs/speex/tdav_codec_speex.c @@ -0,0 +1,282 @@ +/*
+* Copyright (C) 2009-2010 Mamadou Diop.
+*
+* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
+*
+* This file is part of Open Source Doubango Framework.
+*
+* DOUBANGO is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* DOUBANGO 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 General Public License
+* along with DOUBANGO.
+*
+*/
+
+/**@file tdav_codec_speex.c
+ * @brief Speex codecs
+ *
+ * @author Mamadou Diop <diopmamadou(at)doubango.org>
+ *
+ * @date Created: Sat Nov 8 16:54:58 2009 mdiop
+ */
+#include "tinydav/codecs/speex/tdav_codec_speex.h"
+
+#if HAVE_LIB_SPEEX
+
+#include "tsk_memory.h"
+#include "tsk_debug.h"
+
+/* ============ Common ================= */
+int tdav_codec_speex_init(tdav_codec_speex_t* self, tdav_codec_speex_type_t type);
+int tdav_codec_speex_deinit(tdav_codec_speex_t* self);
+
+/* ============ iLBC Plugin interface ================= */
+
+#define tdav_codec_speex_fmtp_set tsk_null
+
+int tdav_codec_speex_open(tmedia_codec_t* self)
+{
+ static int quality = 6;
+ tdav_codec_speex_t* speex = (tdav_codec_speex_t*)self;
+ tsk_size_t size = 0;
+
+ switch(speex->type){
+ case tdav_codec_speex_type_nb:
+ speex->encoder.state = speex_encoder_init(&speex_nb_mode);
+ speex->decoder.state = speex_decoder_init(&speex_nb_mode);
+
+ speex_decoder_ctl(speex->decoder.state, SPEEX_GET_FRAME_SIZE, &speex->decoder.size);
+ speex->decoder.size = (speex->decoder.size ? speex->decoder.size : 160) * sizeof(spx_int16_t);
+ if(!(speex->decoder.buffer = tsk_calloc(speex->decoder.size, 1))){
+ speex->decoder.size = 0;
+ TSK_DEBUG_ERROR("Failed to allocate new buffer");
+ return -3;
+ }
+
+ speex_encoder_ctl(speex->encoder.state, SPEEX_SET_QUALITY, &quality);
+ speex_encoder_ctl(speex->encoder.state, SPEEX_GET_FRAME_SIZE, &speex->encoder.size);
+ if(!speex->encoder.size){
+ speex->encoder.size = 20;
+ }
+ break;
+ default:
+ TSK_DEBUG_ERROR("Not implemented");
+ return -2;
+ }
+
+ speex_bits_init(&speex->encoder.bits);
+ speex_bits_init(&speex->decoder.bits);
+ speex_bits_reset(&speex->encoder.bits);
+ speex_bits_reset(&speex->decoder.bits);
+
+ return 0;
+}
+
+int tdav_codec_speex_close(tmedia_codec_t* self)
+{
+ tdav_codec_speex_t* speex = (tdav_codec_speex_t*)self;
+
+
+
+ return 0;
+}
+
+tsk_size_t tdav_codec_speex_encode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size)
+{
+ tdav_codec_speex_t* speex = (tdav_codec_speex_t*)self;
+ tsk_size_t outsize = 0;
+
+ if(!self || !in_data || !in_size || !out_data){
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return 0;
+ }
+
+ speex_bits_reset(&speex->encoder.bits);
+ speex_encode_int(speex->encoder.state, (spx_int16_t*)in_data, &speex->encoder.bits);
+
+ if(*out_max_size <speex->encoder.size){
+ if((*out_data = tsk_realloc(*out_data, speex->encoder.size))){
+ *out_max_size = speex->encoder.size;
+ }
+ else{
+ *out_max_size = 0;
+ return 0;
+ }
+ }
+
+ outsize = speex_bits_write(&speex->encoder.bits, *out_data, speex->encoder.size);
+
+ return outsize;
+}
+
+tsk_size_t tdav_codec_speex_decode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size, const tsk_object_t* proto_hdr)
+{
+ int ret;
+ tsk_size_t out_size = 0;
+ tdav_codec_speex_t* speex = (tdav_codec_speex_t*)self;
+
+ if(!self || !in_data || !in_size || !out_data){
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return 0;
+ }
+
+ /* initializes the bit-stream */
+ speex_bits_read_from(&speex->decoder.bits, (char*)in_data, in_size);
+
+ do{
+ /* performs decode() */
+ if((ret = speex_decode_int(speex->decoder.state, &speex->decoder.bits, speex->decoder.buffer))){
+ TSK_DEBUG_ERROR("Failed to decode the buffer. retcode=%d", ret);
+ break;
+ }
+
+ if(*out_max_size <(out_size + speex->decoder.size)){
+ if((*out_data = tsk_realloc(*out_data, (out_size + speex->decoder.size)))){
+ *out_max_size = (out_size + speex->decoder.size);
+ }
+ else{
+ *out_max_size = 0;
+ return 0;
+ }
+ }
+
+ /* copy output buffer */
+ memcpy(&((uint8_t*)*out_data)[out_size], speex->decoder.buffer, speex->decoder.size);
+ out_size += speex->decoder.size;
+ }
+ while(speex_bits_remaining(&speex->decoder.bits) >= 5);
+
+
+ return out_size;
+}
+
+char* tdav_codec_speex_fmtp_get(const tmedia_codec_t* codec)
+{
+ return tsk_null;
+}
+
+tsk_bool_t tdav_codec_speex_fmtp_match(const tmedia_codec_t* codec, const char* fmtp)
+{
+ return tsk_true;
+}
+
+
+//
+// Speex Narrow Band Plugin definition
+//
+
+/* constructor */
+static tsk_object_t* tdav_codec_speex_nb_ctor(tsk_object_t * self, va_list * app)
+{
+ tdav_codec_speex_t *speex = self;
+ if(speex){
+ /* init base: called by tmedia_codec_create() */
+ /* init self */
+ tdav_codec_speex_init(speex, tdav_codec_speex_type_nb);
+ }
+ return self;
+}
+/* destructor */
+static tsk_object_t* tdav_codec_speex_nb_dtor(tsk_object_t * self)
+{
+ tdav_codec_speex_t *speex = self;
+ if(speex){
+ /* deinit base */
+ tmedia_codec_audio_deinit(speex);
+ /* deinit self */
+ tdav_codec_speex_deinit(speex);
+ }
+
+ return self;
+}
+/* object definition */
+static const tsk_object_def_t tdav_codec_speex_nb_def_s =
+{
+ sizeof(tdav_codec_speex_t),
+ tdav_codec_speex_nb_ctor,
+ tdav_codec_speex_nb_dtor,
+ tmedia_codec_cmp,
+};
+/* plugin definition*/
+static const tmedia_codec_plugin_def_t tdav_codec_speex_nb_plugin_def_s =
+{
+ &tdav_codec_speex_nb_def_s,
+
+ tmedia_audio,
+ "SPEEX",
+ "Speex Narrow Band Codec",
+ TMEDIA_CODEC_FORMAT_SPEEX_NB,
+ tsk_true,
+ 8000, // rate
+
+ { /* audio */
+ 1, // channels
+ 20 // ptime
+ },
+
+ /* video */
+ {0},
+
+ tdav_codec_speex_open,
+ tdav_codec_speex_close,
+ tdav_codec_speex_encode,
+ tdav_codec_speex_decode,
+ tdav_codec_speex_fmtp_match,
+ tdav_codec_speex_fmtp_get,
+ tdav_codec_speex_fmtp_set
+};
+const tmedia_codec_plugin_def_t *tdav_codec_speex_nb_plugin_def_t = &tdav_codec_speex_nb_plugin_def_s;
+
+
+//
+// Common functions
+//
+int tdav_codec_speex_init(tdav_codec_speex_t* self, tdav_codec_speex_type_t type)
+{
+ if(self){
+ self->type = type;
+ return 0;
+ }
+ else{
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return -1;
+ }
+}
+
+int tdav_codec_speex_deinit(tdav_codec_speex_t* self)
+{
+ if(self){
+ if(self->decoder.state){
+ speex_decoder_destroy(self->decoder.state);
+ self->decoder.state = tsk_null;
+ }
+ speex_bits_destroy(&self->decoder.bits);
+ if(self->decoder.buffer){
+ TSK_FREE(self->decoder.buffer);
+ self->decoder.size = 0;
+ }
+
+ if(self->encoder.state){
+ speex_encoder_destroy(self->encoder.state);
+ self->encoder.state = tsk_null;
+ }
+ speex_bits_destroy(&self->encoder.bits);
+ self->encoder.size = 0;
+
+ return 0;
+ }
+ else{
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return -1;
+ }
+}
+
+#endif /* HAVE_LIB_SPEEX */
|
