Initial revision

1 files changed, 115 insertions, 0 deletions

diff --git a/core/multimedia/opieplayer/libmad/frame.h b/core/multimedia/opieplayer/libmad/frame.h
new file mode 100644
index 0000000..e88d0c8
--- a/dev/null
+++ b/core/multimedia/opieplayer/libmad/frame.h
@@ -0,0 +1,115 @@
+/*
+ * mad - MPEG audio decoder
+ * Copyright (C) 2000-2001 Robert Leslie
+ *
+ * This program 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.
+ *
+ * This program 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id$
+ */
+
+# ifndef LIBMAD_FRAME_H
+# define LIBMAD_FRAME_H
+
+# include "fixed.h"
+# include "timer.h"
+# include "stream.h"
+
+enum mad_layer {
+          MAD_LAYER_I   = 1,            /* Layer I */
+          MAD_LAYER_II  = 2,            /* Layer II */
+          MAD_LAYER_III = 3             /* Layer III */
+};
+
+enum mad_mode {
+          MAD_MODE_SINGLE_CHANNEL = 0,  /* single channel */
+          MAD_MODE_DUAL_CHANNEL           = 1,  /* dual channel */
+          MAD_MODE_JOINT_STEREO           = 2,  /* joint (MS/intensity) stereo */
+          MAD_MODE_STEREO         = 3   /* normal LR stereo */
+};
+
+enum mad_emphasis {
+          MAD_EMPHASIS_NONE       = 0,  /* no emphasis */
+          MAD_EMPHASIS_50_15_US           = 1,  /* 50/15 microseconds emphasis */
+          MAD_EMPHASIS_CCITT_J_17 = 3   /* CCITT J.17 emphasis */
+};
+
+struct mad_frame {
+  struct mad_header {
+            enum mad_layer layer;       /* audio layer (1, 2, or 3) */
+            enum mad_mode mode;                 /* channel mode (see above) */
+            int mode_extension;                 /* additional mode info */
+            enum mad_emphasis emphasis;         /* de-emphasis to use (see above) */
+
+            unsigned long bitrate;      /* stream bitrate (bps) */
+            unsigned int samplerate;    /* sampling frequency (Hz) */
+
+            unsigned short crc_check;   /* frame CRC accumulator */
+            unsigned short crc_target;  /* final target CRC checksum */
+
+            int flags;                  /* flags (see below) */
+            int private_bits;           /* private bits (see below) */
+
+            mad_timer_t duration;       /* audio playing time of frame */
+  } header;
+
+          int options;                  /* decoding options (from stream) */
+
+          mad_fixed_t sbsample[2][36][32];/* synthesis subband filter samples */
+          mad_fixed_t (*overlap)[2][32][18];/* Layer III block overlap data */
+};
+
+        # define MAD_NCHANNELS(header)  ((header)->mode ? 2 : 1)
+# define MAD_NSBSAMPLES(header)  \
+  ((header)->layer == MAD_LAYER_I ? 12 :  \
+   (((header)->layer == MAD_LAYER_III &&  \
+     ((header)->flags & MAD_FLAG_LSF_EXT)) ? 18 : 36))
+
+enum {
+          MAD_FLAG_NPRIVATE_III           = 0x0007,/* number of Layer III private bits */
+          MAD_FLAG_INCOMPLETE     = 0x0008,/* header but not data is decoded */
+
+          MAD_FLAG_PROTECTION     = 0x0010,/* frame has CRC protection */
+          MAD_FLAG_COPYRIGHT      = 0x0020,/* frame is copyright */
+          MAD_FLAG_ORIGINAL       = 0x0040,/* frame is original (else copy) */
+          MAD_FLAG_PADDING        = 0x0080,/* frame has additional slot */
+
+          MAD_FLAG_I_STEREO       = 0x0100,/* uses intensity joint stereo */
+          MAD_FLAG_MS_STEREO      = 0x0200,/* uses middle/side joint stereo */
+          MAD_FLAG_FREEFORMAT     = 0x0400,/* uses free format bitrate */
+
+          MAD_FLAG_LSF_EXT        = 0x1000,/* lower sampling freq. extension */
+          MAD_FLAG_MC_EXT         = 0x2000,/* multichannel audio extension */
+          MAD_FLAG_MPEG_2_5_EXT           = 0x4000/* MPEG 2.5 (unofficial) extension */
+};
+
+enum {
+          MAD_PRIVATE_HEADER      = 0x0100,/* header private bit */
+          MAD_PRIVATE_III         = 0x001f/* Layer III private bits (up to 5) */
+};
+
+void mad_header_init(struct mad_header *);
+
+# define mad_header_finish(header)  /* nothing */
+
+int mad_header_decode(struct mad_header *, struct mad_stream *);
+
+void mad_frame_init(struct mad_frame *);
+void mad_frame_finish(struct mad_frame *);
+
+int mad_frame_decode(struct mad_frame *, struct mad_stream *);
+
+void mad_frame_mute(struct mad_frame *);
+
+# endif