From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Sat, 25 Jun 2011 21:32:25 -0400 Subject: Add codecs to librbcodec. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius Tested-by: Nils Wallménius --- lib/rbcodec/codecs/libspeex/speex/speex_header.h | 91 ++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 lib/rbcodec/codecs/libspeex/speex/speex_header.h (limited to 'lib/rbcodec/codecs/libspeex/speex/speex_header.h') diff --git a/lib/rbcodec/codecs/libspeex/speex/speex_header.h b/lib/rbcodec/codecs/libspeex/speex/speex_header.h new file mode 100644 index 0000000000..2b60003fe9 --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/speex/speex_header.h @@ -0,0 +1,91 @@ +/* Copyright (C) 2002 Jean-Marc Valin */ +/** + @file speex_header.h + @brief Describes the Speex header +*/ +/* + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + - Neither the name of the Xiph.org Foundation nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*/ + + +#ifndef SPEEX_HEADER_H +#define SPEEX_HEADER_H +/** @defgroup SpeexHeader SpeexHeader: Makes it easy to write/parse an Ogg/Speex header + * This is the Speex header for the Ogg encapsulation. You don't need that if you just use RTP. + * @{ + */ + +#include "speex_types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct SpeexMode; + +/** Length of the Speex header identifier */ +#define SPEEX_HEADER_STRING_LENGTH 8 + +/** Maximum number of characters for encoding the Speex version number in the header */ +#define SPEEX_HEADER_VERSION_LENGTH 20 + +/** Speex header info for file-based formats */ +typedef struct SpeexHeader { + char speex_string[SPEEX_HEADER_STRING_LENGTH]; /**< Identifies a Speex bit-stream, always set to "Speex " */ + char speex_version[SPEEX_HEADER_VERSION_LENGTH]; /**< Speex version */ + spx_int32_t speex_version_id; /**< Version for Speex (for checking compatibility) */ + spx_int32_t header_size; /**< Total size of the header ( sizeof(SpeexHeader) ) */ + spx_int32_t rate; /**< Sampling rate used */ + spx_int32_t mode; /**< Mode used (0 for narrowband, 1 for wideband) */ + spx_int32_t mode_bitstream_version; /**< Version ID of the bit-stream */ + spx_int32_t nb_channels; /**< Number of channels encoded */ + spx_int32_t bitrate; /**< Bit-rate used */ + spx_int32_t frame_size; /**< Size of frames */ + spx_int32_t vbr; /**< 1 for a VBR encoding, 0 otherwise */ + spx_int32_t frames_per_packet; /**< Number of frames stored per Ogg packet */ + spx_int32_t extra_headers; /**< Number of additional headers after the comments */ + spx_int32_t reserved1; /**< Reserved for future use, must be zero */ + spx_int32_t reserved2; /**< Reserved for future use, must be zero */ +} SpeexHeader; + +/** Initializes a SpeexHeader using basic information */ +void speex_init_header(SpeexHeader *header, int rate, int nb_channels, const struct SpeexMode *m); + +/** Creates the header packet from the header itself (mostly involves endianness conversion) */ +char *speex_header_to_packet(SpeexHeader *header, int *size); + +/** Creates a SpeexHeader from a packet */ +SpeexHeader *speex_packet_to_header(char *packet, int size); + +#ifdef __cplusplus +} +#endif + +/** @} */ +#endif -- cgit v1.2.3