Initial commit of work-in-progress MPEG video player plugin based on libmpeg2. Works on all targets with colour LCDs, but most optimised for the ipod Color/Photo and Nano. It currently only plays raw MPEG-1 or MPEG-2 video streams (no audio). Also adds a new lcd_yuv_blit() function to the plugin API - currently only implemented for the ipod Color/Photo and Nano.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10479 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 300 insertions, 0 deletions

diff --git a/apps/plugins/mpegplayer/mpeg2_internal.h b/apps/plugins/mpegplayer/mpeg2_internal.h
new file mode 100644
index 0000000000..850456b1f8
--- /dev/null
+++ b/apps/plugins/mpegplayer/mpeg2_internal.h
@@ -0,0 +1,300 @@
+/*
+ * mpeg2_internal.h
+ * Copyright (C) 2000-2003 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpeg2dec 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
+ */
+
+/* macroblock modes */
+#define MACROBLOCK_INTRA 1
+#define MACROBLOCK_PATTERN 2
+#define MACROBLOCK_MOTION_BACKWARD 4
+#define MACROBLOCK_MOTION_FORWARD 8
+#define MACROBLOCK_QUANT 16
+#define DCT_TYPE_INTERLACED 32
+/* motion_type */
+#define MOTION_TYPE_SHIFT 6
+#define MC_FIELD 1
+#define MC_FRAME 2
+#define MC_16X8 2
+#define MC_DMV 3
+
+/* picture structure */
+#define TOP_FIELD 1
+#define BOTTOM_FIELD 2
+#define FRAME_PICTURE 3
+
+/* picture coding type */
+#define I_TYPE 1
+#define P_TYPE 2
+#define B_TYPE 3
+#define D_TYPE 4
+
+typedef void mpeg2_mc_fct (uint8_t *, const uint8_t *, int, int);
+
+typedef struct {
+    uint8_t * ref[2][3];
+    uint8_t ** ref2[2];
+    int pmv[2][2];
+    int f_code[2];
+} motion_t;
+
+typedef void motion_parser_t (mpeg2_decoder_t * decoder,
+			      motion_t * motion,
+			      mpeg2_mc_fct * const * table);
+
+struct mpeg2_decoder_s {
+    /* first, state that carries information from one macroblock to the */
+    /* next inside a slice, and is never used outside of mpeg2_slice() */
+
+    /* bit parsing stuff */
+    uint32_t bitstream_buf;		/* current 32 bit working set */
+    int bitstream_bits;			/* used bits in working set */
+    const uint8_t * bitstream_ptr;	/* buffer with stream data */
+
+    uint8_t * dest[3];
+
+    int offset;
+    int stride;
+    int uv_stride;
+    int slice_stride;
+    int slice_uv_stride;
+    int stride_frame;
+    unsigned int limit_x;
+    unsigned int limit_y_16;
+    unsigned int limit_y_8;
+    unsigned int limit_y;
+
+    /* Motion vectors */
+    /* The f_ and b_ correspond to the forward and backward motion */
+    /* predictors */
+    motion_t b_motion;
+    motion_t f_motion;
+    motion_parser_t * motion_parser[5];
+
+    /* predictor for DC coefficients in intra blocks */
+    int16_t dc_dct_pred[3];
+
+    /* DCT coefficients */
+    int16_t DCTblock[64] ATTR_ALIGN(64);
+
+    uint8_t * picture_dest[3];
+    void (* convert) (void * convert_id, uint8_t * const * src,
+		      unsigned int v_offset);
+    void * convert_id;
+
+    int dmv_offset;
+    unsigned int v_offset;
+
+    /* now non-slice-specific information */
+
+    /* sequence header stuff */
+    uint16_t * quantizer_matrix[4];
+    uint16_t (* chroma_quantizer[2])[64];
+    uint16_t quantizer_prescale[4][32][64];
+
+    /* The width and height of the picture snapped to macroblock units */
+    int width;
+    int height;
+    int vertical_position_extension;
+    int chroma_format;
+
+    /* picture header stuff */
+
+    /* what type of picture this is (I, P, B, D) */
+    int coding_type;
+
+    /* picture coding extension stuff */
+
+    /* quantization factor for intra dc coefficients */
+    int intra_dc_precision;
+    /* top/bottom/both fields */
+    int picture_structure;
+    /* bool to indicate all predictions are frame based */
+    int frame_pred_frame_dct;
+    /* bool to indicate whether intra blocks have motion vectors */
+    /* (for concealment) */
+    int concealment_motion_vectors;
+    /* bool to use different vlc tables */
+    int intra_vlc_format;
+    /* used for DMV MC */
+    int top_field_first;
+
+    /* stuff derived from bitstream */
+
+    /* pointer to the zigzag scan we're supposed to be using */
+    const uint8_t * scan;
+
+    int second_field;
+
+    int mpeg1;
+};
+
+typedef struct {
+    mpeg2_fbuf_t fbuf;
+} fbuf_alloc_t;
+
+struct mpeg2dec_s {
+    mpeg2_decoder_t decoder;
+
+    mpeg2_info_t info;
+
+    uint32_t shift;
+    int is_display_initialized;
+    mpeg2_state_t (* action) (struct mpeg2dec_s * mpeg2dec);
+    mpeg2_state_t state;
+    uint32_t ext_state;
+
+    /* allocated in init - gcc has problems allocating such big structures */
+    uint8_t * chunk_buffer;
+    /* pointer to start of the current chunk */
+    uint8_t * chunk_start;
+    /* pointer to current position in chunk_buffer */
+    uint8_t * chunk_ptr;
+    /* last start code ? */
+    uint8_t code;
+
+    /* picture tags */
+    uint32_t tag_current, tag2_current, tag_previous, tag2_previous;
+    int num_tags;
+    int bytes_since_tag;
+
+    int first;
+    int alloc_index_user;
+    int alloc_index;
+    uint8_t first_decode_slice;
+    uint8_t nb_decode_slices;
+
+    unsigned int user_data_len;
+
+    mpeg2_sequence_t new_sequence;
+    mpeg2_sequence_t sequence;
+    mpeg2_gop_t new_gop;
+    mpeg2_gop_t gop;
+    mpeg2_picture_t new_picture;
+    mpeg2_picture_t pictures[4];
+    mpeg2_picture_t * picture;
+    /*const*/ mpeg2_fbuf_t * fbuf[3];	/* 0: current fbuf, 1-2: prediction fbufs */
+
+    fbuf_alloc_t fbuf_alloc[3];
+    int custom_fbuf;
+
+    uint8_t * yuv_buf[3][3];
+    int yuv_index;
+    mpeg2_convert_t * convert;
+    void * convert_arg;
+    unsigned int convert_id_size;
+    int convert_stride;
+    void (* convert_start) (void * id, const mpeg2_fbuf_t * fbuf,
+			    const mpeg2_picture_t * picture,
+			    const mpeg2_gop_t * gop);
+
+    uint8_t * buf_start;
+    uint8_t * buf_end;
+
+    int16_t display_offset_x, display_offset_y;
+
+    int copy_matrix;
+    int8_t q_scale_type, scaled[4];
+    uint8_t quantizer_matrix[4][64];
+    uint8_t new_quantizer_matrix[4][64];
+};
+
+typedef struct {
+#ifdef ARCH_PPC
+    uint8_t regv[12*16];
+#endif
+    int dummy;
+} cpu_state_t;
+
+/* cpu_accel.c */
+uint32_t mpeg2_detect_accel (void);
+
+/* cpu_state.c */
+void mpeg2_cpu_state_init (uint32_t accel);
+
+/* decode.c */
+mpeg2_state_t mpeg2_seek_header (mpeg2dec_t * mpeg2dec);
+mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec);
+
+/* header.c */
+void mpeg2_header_state_init (mpeg2dec_t * mpeg2dec);
+void mpeg2_reset_info (mpeg2_info_t * info);
+int mpeg2_header_sequence (mpeg2dec_t * mpeg2dec);
+int mpeg2_header_gop (mpeg2dec_t * mpeg2dec);
+mpeg2_state_t mpeg2_header_picture_start (mpeg2dec_t * mpeg2dec);
+int mpeg2_header_picture (mpeg2dec_t * mpeg2dec);
+int mpeg2_header_extension (mpeg2dec_t * mpeg2dec);
+int mpeg2_header_user_data (mpeg2dec_t * mpeg2dec);
+void mpeg2_header_sequence_finalize (mpeg2dec_t * mpeg2dec);
+void mpeg2_header_gop_finalize (mpeg2dec_t * mpeg2dec);
+void mpeg2_header_picture_finalize (mpeg2dec_t * mpeg2dec, uint32_t accels);
+mpeg2_state_t mpeg2_header_slice_start (mpeg2dec_t * mpeg2dec);
+mpeg2_state_t mpeg2_header_end (mpeg2dec_t * mpeg2dec);
+void mpeg2_set_fbuf (mpeg2dec_t * mpeg2dec, int b_type);
+
+/* idct.c */
+void mpeg2_idct_init (uint32_t accel);
+
+/* idct_mmx.c */
+void mpeg2_idct_copy_mmxext (int16_t * block, uint8_t * dest, int stride);
+void mpeg2_idct_add_mmxext (int last, int16_t * block,
+			    uint8_t * dest, int stride);
+void mpeg2_idct_copy_mmx (int16_t * block, uint8_t * dest, int stride);
+void mpeg2_idct_add_mmx (int last, int16_t * block,
+			 uint8_t * dest, int stride);
+void mpeg2_idct_mmx_init (void);
+
+/* idct_altivec.c */
+void mpeg2_idct_copy_altivec (int16_t * block, uint8_t * dest, int stride);
+void mpeg2_idct_add_altivec (int last, int16_t * block,
+			     uint8_t * dest, int stride);
+void mpeg2_idct_altivec_init (void);
+
+/* idct_alpha.c */
+void mpeg2_idct_copy_mvi (int16_t * block, uint8_t * dest, int stride);
+void mpeg2_idct_add_mvi (int last, int16_t * block,
+			 uint8_t * dest, int stride);
+void mpeg2_idct_copy_alpha (int16_t * block, uint8_t * dest, int stride);
+void mpeg2_idct_add_alpha (int last, int16_t * block,
+			   uint8_t * dest, int stride);
+void mpeg2_idct_alpha_init (void);
+
+/* motion_comp.c */
+void mpeg2_mc_init (uint32_t accel);
+
+typedef struct {
+    mpeg2_mc_fct * put [8];
+    mpeg2_mc_fct * avg [8];
+} mpeg2_mc_t;
+
+#define MPEG2_MC_EXTERN(x) mpeg2_mc_t mpeg2_mc_##x = {			  \
+    {MC_put_o_16_##x, MC_put_x_16_##x, MC_put_y_16_##x, MC_put_xy_16_##x, \
+     MC_put_o_8_##x,  MC_put_x_8_##x,  MC_put_y_8_##x,  MC_put_xy_8_##x}, \
+    {MC_avg_o_16_##x, MC_avg_x_16_##x, MC_avg_y_16_##x, MC_avg_xy_16_##x, \
+     MC_avg_o_8_##x,  MC_avg_x_8_##x,  MC_avg_y_8_##x,  MC_avg_xy_8_##x}  \
+};
+
+extern mpeg2_mc_t mpeg2_mc_c;
+extern mpeg2_mc_t mpeg2_mc_mmx;
+extern mpeg2_mc_t mpeg2_mc_mmxext;
+extern mpeg2_mc_t mpeg2_mc_3dnow;
+extern mpeg2_mc_t mpeg2_mc_altivec;
+extern mpeg2_mc_t mpeg2_mc_alpha;
+extern mpeg2_mc_t mpeg2_mc_vis;