dts decoder using libdca

1 files changed, 86 insertions, 0 deletions

diff --git a/plugins/dca/dca.h b/plugins/dca/dca.h
new file mode 100644
index 00000000..00b83739
--- /dev/null
+++ b/plugins/dca/dca.h
@@ -0,0 +1,86 @@
+/*
+ * dca.h
+ * Copyright (C) 2004 Gildas Bazin <gbazin@videolan.org>
+ *
+ * This file is part of libdca, a free DTS Coherent Acoustics stream decoder.
+ * See http://www.videolan.org/developers/libdca.html for updates.
+ *
+ * libdca 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * libdca 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 this program; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef LIBDCA_DCA_H
+#define LIBDCA_DCA_H
+
+/* x86 accelerations */
+#define MM_ACCEL_X86_MMX	0x80000000
+#define MM_ACCEL_X86_3DNOW	0x40000000
+#define MM_ACCEL_X86_MMXEXT	0x20000000
+
+uint32_t mm_accel (void);
+
+#if defined(LIBDCA_FIXED)
+typedef int32_t sample_t;
+typedef int32_t level_t;
+#elif defined(LIBDCA_DOUBLE)
+typedef double sample_t;
+typedef double level_t;
+#else
+typedef float sample_t;
+typedef float level_t;
+#endif
+
+typedef struct dca_state_s dca_state_t;
+
+#define DCA_MONO 0
+#define DCA_CHANNEL 1
+#define DCA_STEREO 2
+#define DCA_STEREO_SUMDIFF 3
+#define DCA_STEREO_TOTAL 4
+#define DCA_3F 5
+#define DCA_2F1R 6
+#define DCA_3F1R 7
+#define DCA_2F2R 8
+#define DCA_3F2R 9
+#define DCA_4F2R 10
+
+#define DCA_DOLBY 101 /* FIXME */
+
+#define DCA_CHANNEL_MAX  DCA_3F2R /* We don't handle anything above that */
+#define DCA_CHANNEL_BITS 6
+#define DCA_CHANNEL_MASK 0x3F
+
+#define DCA_LFE 0x80
+#define DCA_ADJUST_LEVEL 0x100
+
+dca_state_t * dca_init (uint32_t mm_accel);
+
+int dca_syncinfo (dca_state_t *state, uint8_t * buf, int * flags,
+                  int * sample_rate, int * bit_rate, int *frame_length);
+
+int dca_frame (dca_state_t * state, uint8_t * buf, int * flags,
+               level_t * level, sample_t bias);
+
+void dca_dynrng (dca_state_t * state,
+                 level_t (* call) (level_t, void *), void * data);
+
+int dca_blocks_num (dca_state_t * state);
+int dca_block (dca_state_t * state);
+
+sample_t * dca_samples (dca_state_t * state);
+
+void dca_free (dca_state_t * state);
+
+#endif /* LIBDCA_DCA_H */