Importing libmpeg2 from mpeg2dec-0.3.1

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@9853 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 126 insertions, 50 deletions

diff --git a/libmpeg2/mpeg2.h b/libmpeg2/mpeg2.h
index a1a0ef1681..5016f4d85f 100644
--- a/libmpeg2/mpeg2.h
+++ b/libmpeg2/mpeg2.h
@@ -1,8 +1,10 @@
 /*
  * mpeg2.h
- * Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
  *
  * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
+ * See http://libmpeg2.sourceforge.net/ for updates.
  *
  * mpeg2dec is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,52 +21,126 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-/* Structure for the mpeg2dec decoder */
-
-typedef struct mpeg2dec_s {
-//    vo_instance_t * output;
-
-    /* this is where we keep the state of the decoder */
-    struct picture_s * picture;
-    
-    uint32_t shift;
-    int is_display_initialized;
-    int is_sequence_needed;
-    int drop_flag;
-    int drop_frame;
-    int in_slice;
-
-    /* the maximum chunk size is determined by vbv_buffer_size */
-    /* which is 224K for MP@ML streams. */
-    /* (we make no pretenses of decoding anything more than that) */
-    /* allocated in init - gcc has problems allocating such big structures */
-    uint8_t * chunk_buffer;
-    /* pointer to current position in chunk_buffer */
-    uint8_t * chunk_ptr;
-    /* last start code ? */
-    uint8_t code;
-
-    /* ONLY for 0.2.0 release - will not stay there later */
-    int frame_rate_code;
-} mpeg2dec_t ;
-
-
-void mpeg2_init (void);
-//void mpeg2_allocate_image_buffers (picture_t * picture);
-int mpeg2_decode_data (vo_functions_t *, uint8_t * data_start, uint8_t * data_end,int framedrop);
-//void mpeg2_close (vo_functions_t *);
-//void mpeg2_drop (int flag);
-//void mpeg2_free_image_buffers (picture_t * picture)
-
-/* initialize mpegdec with a opaque user pointer */
-//void mpeg2_init (mpeg2dec_t * mpeg2dec, uint32_t mm_accel
-//		 ,vo_instance_t * output
-//		 );
-
-/* destroy everything which was allocated, shutdown the output */
-//void mpeg2_close (mpeg2dec_t * mpeg2dec);
-
-//int mpeg2_decode_data (mpeg2dec_t * mpeg2dec,
-//		       uint8_t * data_start, uint8_t * data_end);
-
-//void mpeg2_drop (mpeg2dec_t * mpeg2dec, int flag);
+#ifndef MPEG2_H
+#define MPEG2_H
+
+#define SEQ_FLAG_MPEG2 1
+#define SEQ_FLAG_CONSTRAINED_PARAMETERS 2
+#define SEQ_FLAG_PROGRESSIVE_SEQUENCE 4
+#define SEQ_FLAG_LOW_DELAY 8
+#define SEQ_FLAG_COLOUR_DESCRIPTION 16
+
+#define SEQ_MASK_VIDEO_FORMAT 0xe0
+#define SEQ_VIDEO_FORMAT_COMPONENT 0
+#define SEQ_VIDEO_FORMAT_PAL 0x20
+#define SEQ_VIDEO_FORMAT_NTSC 0x40
+#define SEQ_VIDEO_FORMAT_SECAM 0x60
+#define SEQ_VIDEO_FORMAT_MAC 0x80
+#define SEQ_VIDEO_FORMAT_UNSPECIFIED 0xa0
+
+typedef struct {
+    unsigned int width, height;
+    unsigned int chroma_width, chroma_height;
+    unsigned int byte_rate;
+    unsigned int vbv_buffer_size;
+    uint32_t flags;
+
+    unsigned int picture_width, picture_height;
+    unsigned int display_width, display_height;
+    unsigned int pixel_width, pixel_height;
+    unsigned int frame_period;
+
+    uint8_t profile_level_id;
+    uint8_t colour_primaries;
+    uint8_t transfer_characteristics;
+    uint8_t matrix_coefficients;
+} sequence_t;
+
+#define PIC_MASK_CODING_TYPE 7
+#define PIC_FLAG_CODING_TYPE_I 1
+#define PIC_FLAG_CODING_TYPE_P 2
+#define PIC_FLAG_CODING_TYPE_B 3
+#define PIC_FLAG_CODING_TYPE_D 4
+
+#define PIC_FLAG_TOP_FIELD_FIRST 8
+#define PIC_FLAG_PROGRESSIVE_FRAME 16
+#define PIC_FLAG_COMPOSITE_DISPLAY 32
+#define PIC_FLAG_SKIP 64
+#define PIC_FLAG_PTS 128
+#define PIC_MASK_COMPOSITE_DISPLAY 0xfffff000
+
+typedef struct {
+    unsigned int temporal_reference;
+    unsigned int nb_fields;
+    uint32_t pts;
+    uint32_t flags;
+    struct {
+	int x, y;
+    } display_offset[3];
+} picture_t;
+
+typedef struct {
+    uint8_t * buf[3];
+    void * id;
+} fbuf_t;
+
+typedef struct {
+    const sequence_t * sequence;
+    const picture_t * current_picture;
+    const picture_t * current_picture_2nd;
+    const fbuf_t * current_fbuf;
+    const picture_t * display_picture;
+    const picture_t * display_picture_2nd;
+    const fbuf_t * display_fbuf;
+    const fbuf_t * discard_fbuf;
+    const uint8_t * user_data;
+    int user_data_len;
+} mpeg2_info_t;
+
+typedef struct mpeg2dec_s mpeg2dec_t;
+typedef struct decoder_s decoder_t;
+
+#define STATE_SEQUENCE 1
+#define STATE_SEQUENCE_REPEATED 2
+#define STATE_GOP 3
+#define STATE_PICTURE 4
+#define STATE_SLICE_1ST 5
+#define STATE_PICTURE_2ND 6
+#define STATE_SLICE 7
+#define STATE_END 8
+#define STATE_INVALID 9
+
+struct convert_init_s;
+void mpeg2_convert (mpeg2dec_t * mpeg2dec,
+		    void (* convert) (int, int, uint32_t, void *,
+				      struct convert_init_s *), void * arg);
+void mpeg2_set_buf (mpeg2dec_t * mpeg2dec, uint8_t * buf[3], void * id);
+void mpeg2_custom_fbuf (mpeg2dec_t * mpeg2dec, int custom_fbuf);
+void mpeg2_init_fbuf (decoder_t * decoder, uint8_t * current_fbuf[3],
+		      uint8_t * forward_fbuf[3], uint8_t * backward_fbuf[3]);
+
+void mpeg2_slice (decoder_t * decoder, int code, const uint8_t * buffer);
+
+#define MPEG2_ACCEL_X86_MMX 1
+#define MPEG2_ACCEL_X86_3DNOW 2
+#define MPEG2_ACCEL_X86_MMXEXT 4
+#define MPEG2_ACCEL_PPC_ALTIVEC 1
+#define MPEG2_ACCEL_ALPHA 1
+#define MPEG2_ACCEL_ALPHA_MVI 2
+#define MPEG2_ACCEL_MLIB 0x40000000
+#define MPEG2_ACCEL_DETECT 0x80000000
+
+uint32_t mpeg2_accel (uint32_t accel);
+mpeg2dec_t * mpeg2_init (void);
+const mpeg2_info_t * mpeg2_info (mpeg2dec_t * mpeg2dec);
+void mpeg2_close (mpeg2dec_t * mpeg2dec);
+
+void mpeg2_buffer (mpeg2dec_t * mpeg2dec, uint8_t * start, uint8_t * end);
+int mpeg2_parse (mpeg2dec_t * mpeg2dec);
+
+void mpeg2_skip (mpeg2dec_t * mpeg2dec, int skip);
+void mpeg2_slice_region (mpeg2dec_t * mpeg2dec, int start, int end);
+
+void mpeg2_pts (mpeg2dec_t * mpeg2dec, uint32_t pts);
+
+#endif /* MPEG2_H */