making act segmenter

1 files changed, 124 insertions, 0 deletions

diff --git a/ffmpeg/libavcodec/dvdata.h b/ffmpeg/libavcodec/dvdata.h
new file mode 100644
index 0000000..97c20e3
--- /dev/null
+++ b/ffmpeg/libavcodec/dvdata.h
@@ -0,0 +1,124 @@
+/*
+ * Constants for DV codec
+ * Copyright (c) 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Constants for DV codec.
+ */
+
+#ifndef AVCODEC_DVDATA_H
+#define AVCODEC_DVDATA_H
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "get_bits.h"
+#include "dv_profile.h"
+
+typedef struct DVVideoContext {
+    const DVprofile *sys;
+    AVFrame          picture;
+    AVCodecContext  *avctx;
+    uint8_t         *buf;
+
+    uint8_t  dv_zigzag[2][64];
+
+    void (*get_pixels)(int16_t *block, const uint8_t *pixels, int line_size);
+    void (*fdct[2])(int16_t *block);
+    void (*idct_put[2])(uint8_t *dest, int line_size, int16_t *block);
+    me_cmp_func ildct_cmp;
+} DVVideoContext;
+
+enum dv_section_type {
+     dv_sect_header  = 0x1f,
+     dv_sect_subcode = 0x3f,
+     dv_sect_vaux    = 0x56,
+     dv_sect_audio   = 0x76,
+     dv_sect_video   = 0x96,
+};
+
+enum dv_pack_type {
+     dv_header525     = 0x3f, /* see dv_write_pack for important details on */
+     dv_header625     = 0xbf, /* these two packs */
+     dv_timecode      = 0x13,
+     dv_audio_source  = 0x50,
+     dv_audio_control = 0x51,
+     dv_audio_recdate = 0x52,
+     dv_audio_rectime = 0x53,
+     dv_video_source  = 0x60,
+     dv_video_control = 0x61,
+     dv_video_recdate = 0x62,
+     dv_video_rectime = 0x63,
+     dv_unknown_pack  = 0xff,
+};
+
+extern const uint8_t ff_dv_quant_shifts[22][4];
+extern const uint8_t ff_dv_quant_offset[4];
+
+extern const int ff_dv_iweight_88[64];
+extern const int ff_dv_iweight_248[64];
+extern const int ff_dv_iweight_1080_y[64];
+extern const int ff_dv_iweight_1080_c[64];
+extern const int ff_dv_iweight_720_y[64];
+extern const int ff_dv_iweight_720_c[64];
+
+#define DV_PROFILE_IS_HD(p) ((p)->video_stype & 0x10)
+#define DV_PROFILE_IS_1080i50(p) (((p)->video_stype == 0x14) && ((p)->dsf == 1))
+#define DV_PROFILE_IS_720p50(p)  (((p)->video_stype == 0x18) && ((p)->dsf == 1))
+
+/**
+ * largest possible DV frame, in bytes (1080i50)
+ */
+#define DV_MAX_FRAME_SIZE 576000
+
+/**
+ * maximum number of blocks per macroblock in any DV format
+ */
+#define DV_MAX_BPM 8
+
+#define TEX_VLC_BITS 9
+
+extern RL_VLC_ELEM ff_dv_rl_vlc[1184];
+
+int ff_dv_init_dynamic_tables(const DVprofile *d);
+int ff_dvvideo_init(AVCodecContext *avctx);
+
+static inline int dv_work_pool_size(const DVprofile *d)
+{
+    int size = d->n_difchan*d->difseg_size*27;
+    if (DV_PROFILE_IS_1080i50(d))
+        size -= 3*27;
+    if (DV_PROFILE_IS_720p50(d))
+        size -= 4*27;
+    return size;
+}
+
+static inline void dv_calculate_mb_xy(DVVideoContext *s, DVwork_chunk *work_chunk, int m, int *mb_x, int *mb_y)
+{
+     *mb_x = work_chunk->mb_coordinates[m] & 0xff;
+     *mb_y = work_chunk->mb_coordinates[m] >> 8;
+
+     /* We work with 720p frames split in half. The odd half-frame (chan==2,3) is displaced :-( */
+     if (s->sys->height == 720 && !(s->buf[1]&0x0C)) {
+         *mb_y -= (*mb_y>17)?18:-72; /* shifting the Y coordinate down by 72/2 macro blocks */
+     }
+}
+
+#endif /* AVCODEC_DVDATA_H */