Add libdcadec decoder

3 files changed, 262 insertions, 0 deletions

diff --git a/thirdparty/include/libdcadec/dca_context.h b/thirdparty/include/libdcadec/dca_context.h
new file mode 100644
index 00000000..757390e9
--- /dev/null
+++ b/thirdparty/include/libdcadec/dca_context.h
@@ -0,0 +1,262 @@
+/*
+ * This file is part of libdcadec.
+ *
+ * This library 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.
+ *
+ * This library 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 this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef DCA_CONTEXT_H
+#define DCA_CONTEXT_H
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+/**@{*/
+#ifdef _WIN32
+#define DCADEC_SHARED_EXPORT    __declspec(dllexport)
+#define DCADEC_SHARED_IMPORT    __declspec(dllimport)
+#else
+#define DCADEC_SHARED_EXPORT    __attribute__((visibility("default")))
+#define DCADEC_SHARED_IMPORT    __attribute__((visibility("default")))
+#endif
+
+#ifdef DCADEC_SHARED
+#ifdef DCADEC_INTERNAL
+#define DCADEC_API  DCADEC_SHARED_EXPORT
+#else
+#define DCADEC_API  DCADEC_SHARED_IMPORT
+#endif
+#else
+#define DCADEC_API
+#endif
+/**@}*/
+
+/**@{*/
+#define DCADEC_EINVAL       1   /**< Invalid argument */
+#define DCADEC_EBADDATA     2   /**< Invalid bitstream format */
+#define DCADEC_EBADCRC      3   /**< CRC check failed */
+#define DCADEC_EBADREAD     4   /**< Bitstream navigation error */
+#define DCADEC_ENOSYNC      5   /**< Synchronization error */
+#define DCADEC_ENOSUP       6   /**< Unsupported feature */
+#define DCADEC_ENOMEM       7   /**< Memory allocation error */
+#define DCADEC_EOVERFLOW    8   /**< PCM output overflow */
+#define DCADEC_EIO          9   /**< I/O error */
+#define DCADEC_EOUTCHG     10   /**< PCM output parameters changed */
+#define DCADEC_EFAIL       32   /**< Unspecified error */
+/**@}*/
+
+/**@{*/
+/** Decode DTS core only without extensions */
+#define DCADEC_FLAG_CORE_ONLY           0x01
+
+/** Force bit exact DTS core decoding */
+#define DCADEC_FLAG_CORE_BIT_EXACT      0x02
+
+/**
+ * Force DTS core synthesis using X96 filter, with high frequency subbands set
+ * to zero. If actual X96 data is present, it is discarded when this flag is
+ * set. Effectively doubles output sample rate.
+ */
+#define DCADEC_FLAG_CORE_SYNTH_X96      0x04
+
+/** Force DTS core bit width reducion to source PCM resolution */
+#define DCADEC_FLAG_CORE_SOURCE_PCM_RES 0x08
+
+/* Use FIR filter for floating point DTS core LFE channel interpolation */
+#define DCADEC_FLAG_CORE_LFE_FIR        0x10
+
+/** Extract embedded 2.0 downmix (NOT YET IMPLEMENTED) */
+#define DCADEC_FLAG_KEEP_DMIX_2CH       0x20
+
+/** Extract embedded 5.1 downmix (NOT YET IMPLEMENTED) */
+#define DCADEC_FLAG_KEEP_DMIX_6CH       0x40
+
+/** Output native DTS channel layout, not WAVEFORMATEX layout */
+#define DCADEC_FLAG_NATIVE_LAYOUT       0x80
+/**@}*/
+
+/**@{*/
+#define DCADEC_PROFILE_UNKNOWN  0       /**< Unknown Profile */
+#define DCADEC_PROFILE_DS       0x01    /**< Digital Surround */
+#define DCADEC_PROFILE_DS_96_24 0x02    /**< Digital Surround 96/24 */
+#define DCADEC_PROFILE_DS_ES    0x04    /**< Digital Surround ES */
+#define DCADEC_PROFILE_HD_HRA   0x08    /**< High-Resolution Audio */
+#define DCADEC_PROFILE_HD_MA    0x10    /**< Master Audio */
+#define DCADEC_PROFILE_EXPRESS  0x20    /**< Express */
+/**@}*/
+
+/**
+ * Size in bytes of empty padding that must be present after the end of input
+ * buffer. libdcadec may overread the input buffer up to this number of bytes.
+ */
+#define DCADEC_BUFFER_PADDING   8
+
+struct dcadec_context;
+
+struct dcadec_core_info {
+    int     nchannels;      /**< Number of primary audio channels */
+    int     audio_mode;     /**< Core audio channel arrangement (AMODE) */
+    int     lfe_present;    /**< LFE channel presence flag (can be 0, 1 or 2) */
+    int     sample_rate;    /**< Core audio sample rate in Hz */
+    int     source_pcm_res; /**< Source PCM resolution in bits */
+    bool    es_format;      /**< Extended surround (ES) mastering flag */
+    int     bit_rate;       /**< Core stream bit rate in bytes per second,
+                                 zero or negative if unavailable */
+    int     npcmblocks;     /**< Number of audio sample blocks in a frame */
+    bool    xch_present;    /**< XCH extension data present and valid */
+    bool    xxch_present;   /**< XXCH extension data present and valid */
+    bool    xbr_present;    /**< XBR extension data present and valid */
+    bool    x96_present;    /**< X96 extension data present and valid */
+};
+
+struct dcadec_exss_info {
+    int nchannels;          /**< Number of audio channels encoded among all
+                                 extension sub-streams */
+    int sample_rate;        /**< Maximum encoded audio sample rate in Hz */
+    int bits_per_sample;    /**< Highest encoded PCM resolution in bits */
+    int profile;            /**< Type of DTS profile encoded */
+    bool embedded_stereo;   /**< 2.0 downmix has been embedded into the stream */
+    bool embedded_6ch;      /**< 5.1 downmix has been embedded into the stream */
+};
+
+/**
+ * Parse DTS packet. Caller must have already established byte stream
+ * synchronization. Packet must start with a valid 32-bit sync word.
+ * EXSS frame must be aligned on 4-byte boundary if present in the packet.
+ *
+ * @param dca   Pointer to decoder context.
+ *
+ * @param data  Pointer to packet data buffer. Buffer must be aligned on 4-byte
+ *              boundary and padded at the end with DCADEC_BUFFER_PADDING bytes.
+ *
+ * @param size  Size in bytes of packet data. Size should not include padding.
+ *
+ * @return      0 on success, negative error code on failure.
+ */
+DCADEC_API int dcadec_context_parse(struct dcadec_context *dca, uint8_t *data, size_t size);
+
+/**
+ * Get information about DTS core payload of the parsed packet.
+ *
+ * @param dca   Pointer to decoder context.
+ *
+ * @return      Pointer to DTS core information structure on success,
+ *              NULL on failure. Returned data should be freed with
+ *              dcadec_context_free_core_info() function.
+ */
+DCADEC_API struct dcadec_core_info *dcadec_context_get_core_info(struct dcadec_context *dca);
+
+/**
+ * Free DTS core information structure.
+ *
+ * @param info  Pointer to DTS core information structure.
+ */
+DCADEC_API void dcadec_context_free_core_info(struct dcadec_core_info *info);
+
+/**
+ * Get information about extension sub-stream (EXSS) payload of the parsed
+ * packet. When no EXSS is present but backward compatible DTS core sub-stream
+ * contains extended audio, then information about extended audio in core
+ * sub-stream is returned.
+ *
+ * @param dca   Pointer to decoder context.
+ *
+ * @return      Pointer to EXSS information structure on success,
+ *              NULL on failure. Returned data should be freed with
+ *              dcadec_context_free_exss_info() function.
+ */
+DCADEC_API struct dcadec_exss_info *dcadec_context_get_exss_info(struct dcadec_context *dca);
+
+/**
+ * Free EXSS information structure.
+ *
+ * @param info  Pointer to EXSS information structure.
+ */
+DCADEC_API void dcadec_context_free_exss_info(struct dcadec_exss_info *info);
+
+/**
+ * Filter the parsed packet and return per-channel PCM data. All parameters
+ * except decoder context are optional and can be NULL. This function should
+ * be called exactly once after successfull call to dcadec_context_parse().
+ *
+ * @param dca       Pointer to decoder context.
+ *
+ * @param samples   Filled with address of array of pointers to planes
+ *                  containing PCM data for active channels. This data is only
+ *                  valid until the next call to any libdcadec function.
+ *                  Returned array is tightly packed, there are no gaps for
+ *                  missing channels. Use channel_mask to determine total number
+ *                  of channels and size of returned array. By default channels
+ *                  are ordered according to WAVEFORMATEX specification, but if
+ *                  DCADEC_FLAG_NATIVE_LAYOUT flag was set when creating decoder
+ *                  context, returned channels are in native DTS order.
+ *
+ * @param nsamples  Filled with number of PCM samples in each returned plane.
+ *
+ * @param channel_mask  Filled with bit mask indicating active channels. 1 at
+ *                      the given bit position (counting from the least
+ *                      significant bit) means that the channel is present in
+ *                      the array of pointers to planes, 0 otherwise. Number of
+ *                      bits set to 1 indicates the total number of planes
+ *                      returned.
+ *
+ * @param sample_rate       Filled with decoded audio sample rate in Hz.
+ *
+ * @param bits_per_sample   Filled with decoded audio PCM resolution in bits.
+ *
+ * @param profile           Filled with type of DTS profile actually decoded.
+ *                          This can be different from encoded profile since
+ *                          certain extensions may be not decoded.
+ *
+ * @return                  0 on success, negative error code on failure.
+ */
+DCADEC_API int dcadec_context_filter(struct dcadec_context *dca, int ***samples,
+                                     int *nsamples, int *channel_mask,
+                                     int *sample_rate, int *bits_per_sample,
+                                     int *profile);
+
+/**
+ * Clear all inter-frame history of the decoder.
+ *
+ * @param dca   Pointer to decoder context.
+ */
+DCADEC_API void dcadec_context_clear(struct dcadec_context *dca);
+
+/**
+ * Create DTS decoder context.
+ *
+ * @param flags Any number of DCADEC_FLAG_* constants OR'ed together.
+ *
+ * @return      Pointer to decoder context on success, NULL on failure.
+ */
+DCADEC_API struct dcadec_context *dcadec_context_create(int flags);
+
+/**
+ * Destroy DTS decoder context.
+ *
+ * @param dca   Pointer to decoder context.
+ */
+DCADEC_API void dcadec_context_destroy(struct dcadec_context *dca);
+
+/**
+ * Convert negative libdcadec error code into string.
+ *
+ * @param errnum    Error code returned by libdcadec function.
+ *
+ * @return          Constant string describing error code.
+ */
+DCADEC_API const char *dcadec_strerror(int errnum);
+
+#endif
diff --git a/thirdparty/lib32/libdcadec.a b/thirdparty/lib32/libdcadec.a
new file mode 100644
index 00000000..96cad0c8
--- /dev/null
+++ b/thirdparty/lib32/libdcadec.a
diff --git a/thirdparty/lib64/libdcadec.a b/thirdparty/lib64/libdcadec.a
new file mode 100644
index 00000000..719a7242
--- /dev/null
+++ b/thirdparty/lib64/libdcadec.a