drivers/amvdec_ports/decoder/aml_mpeg4_parser.h - manifest_repos/media_modules - Git at Google

 #ifndef AVCODEC_MPEG4VIDEO_H
 #define AVCODEC_MPEG4VIDEO_H

 #include "../aml_vcodec_drv.h"
 #include "../utils/common.h"
 #ifdef CONFIG_AMLOGIC_MEDIA_V4L_SOFTWARE_PARSER
 #include "../utils/pixfmt.h"
 #endif

 //mpeg4 profile
 #define FF_PROFILE_MPEG4_SIMPLE                     0
 #define FF_PROFILE_MPEG4_SIMPLE_SCALABLE            1
 #define FF_PROFILE_MPEG4_CORE                       2
 #define FF_PROFILE_MPEG4_MAIN                       3
 #define FF_PROFILE_MPEG4_N_BIT                      4
 #define FF_PROFILE_MPEG4_SCALABLE_TEXTURE           5
 #define FF_PROFILE_MPEG4_SIMPLE_FACE_ANIMATION      6
 #define FF_PROFILE_MPEG4_BASIC_ANIMATED_TEXTURE     7
 #define FF_PROFILE_MPEG4_HYBRID                     8
 #define FF_PROFILE_MPEG4_ADVANCED_REAL_TIME         9
 #define FF_PROFILE_MPEG4_CORE_SCALABLE             10
 #define FF_PROFILE_MPEG4_ADVANCED_CODING           11
 #define FF_PROFILE_MPEG4_ADVANCED_CORE             12
 #define FF_PROFILE_MPEG4_ADVANCED_SCALABLE_TEXTURE 13
 #define FF_PROFILE_MPEG4_SIMPLE_STUDIO             14
 #define FF_PROFILE_MPEG4_ADVANCED_SIMPLE           15

 // shapes
 #define RECT_SHAPE       0
 #define BIN_SHAPE        1
 #define BIN_ONLY_SHAPE   2
 #define GRAY_SHAPE       3

 #define SIMPLE_VO_TYPE           1
 #define CORE_VO_TYPE             3
 #define MAIN_VO_TYPE             4
 #define NBIT_VO_TYPE             5
 #define ARTS_VO_TYPE            10
 #define ACE_VO_TYPE             12
 #define SIMPLE_STUDIO_VO_TYPE   14
 #define CORE_STUDIO_VO_TYPE     15
 #define ADV_SIMPLE_VO_TYPE      17

 #define VOT_VIDEO_ID 1
 #define VOT_STILL_TEXTURE_ID 2

 #define FF_PROFILE_UNKNOWN -99
 #define FF_PROFILE_RESERVED -100

 // aspect_ratio_info
 #define EXTENDED_PAR 15

 //vol_sprite_usage / sprite_enable
 #define STATIC_SPRITE 1
 #define GMC_SPRITE 2

 #define MOTION_MARKER 0x1F001
 #define DC_MARKER     0x6B001

 #define VOS_STARTCODE        0x1B0
 #define USER_DATA_STARTCODE  0x1B2
 #define GOP_STARTCODE        0x1B3
 #define VISUAL_OBJ_STARTCODE 0x1B5
 #define VOP_STARTCODE        0x1B6
 #define SLICE_STARTCODE      0x1B7
 #define EXT_STARTCODE        0x1B8

 #define QUANT_MATRIX_EXT_ID  0x3

 /* smaller packets likely don't contain a real frame */
 #define MAX_NVOP_SIZE 19

 #define IS_3IV1 0

 #define CHROMA_420 1
 #define CHROMA_422 2
 #define CHROMA_444 3

 #define FF_ASPECT_EXTENDED 15

 #define AV_NOPTS_VALUE          (LONG_MIN)

 /**
  * Return value for header parsers if frame is not coded.
  * */
 #define FRAME_SKIPPED 100

 enum AVPictureType {
     AV_PICTURE_TYPE_NONE = 0, ///< Undefined
     AV_PICTURE_TYPE_I,     ///< Intra
     AV_PICTURE_TYPE_P,     ///< Predicted
     AV_PICTURE_TYPE_B,     ///< Bi-dir predicted
     AV_PICTURE_TYPE_S,     ///< S(GMC)-VOP MPEG-4
     AV_PICTURE_TYPE_SI,    ///< Switching Intra
     AV_PICTURE_TYPE_SP,    ///< Switching Predicted
     AV_PICTURE_TYPE_BI,    ///< BI type
 };

 struct VLC {
 	int bits;
 	short (*table)[2]; ///< code, bits
 	int table_size, table_allocated;
 };

 /**
  * MpegEncContext.
  */
 struct MpegEncContext {
 	struct mpeg4_dec_param *ctx;

 	/* the following parameters must be initialized before encoding */
 	int width, height;///< picture size. must be a multiple of 16
 	int codec_tag;             ///< internal codec_tag upper case converted from avctx codec_tag
 	int picture_number;       //FIXME remove, unclear definition

 	/** matrix transmitted in the bitstream */
 	u16 intra_matrix[64];
 	u16 chroma_intra_matrix[64];
 	u16 inter_matrix[64];
 	u16 chroma_inter_matrix[64];

 	/* MPEG-4 specific */
 	int studio_profile;
 	int time_base;                  ///< time in seconds of last I,P,S Frame
 	int quant_precision;
 	int quarter_sample;              ///< 1->qpel, 0->half pel ME/MC
 	int aspect_ratio_info; //FIXME remove
 	int sprite_warping_accuracy;
 	int data_partitioning;           ///< data partitioning flag from header
 	int low_delay;                   ///< no reordering needed / has no B-frames
 	int vo_type;
 	int mpeg_quant;

 	/* divx specific, used to workaround (many) bugs in divx5 */
 	int divx_packed;

 	/* MPEG-2-specific - I wished not to have to support this mess. */
 	int progressive_sequence;

 	int progressive_frame;
 	int interlaced_dct;

 	int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
 	const u8 *y_dc_scale_table;     ///< qscale -> y_dc_scale table
 	const u8 *c_dc_scale_table;     ///< qscale -> c_dc_scale table
 	int qscale;		    ///< QP
 	int chroma_qscale;	    ///< chroma QP
 	int pict_type;		    ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
 	int f_code;		    ///< forward MV resolution
 	int b_code;		    ///< backward MV resolution for B-frames (MPEG-4)
 	int no_rounding;  /**< apply no rounding to motion compensation (MPEG-4, msmpeg4, ...)
 	    for B-frames rounding mode is always 0 */
 	int last_time_base;
 	long time;		    ///< time of current frame
 	long last_non_b_time;
 	u16 pp_time;		    ///< time distance between the last 2 p,s,i frames
 	u16 pb_time;		    ///< time distance between the last b and p,s,i frame
 	u16 pp_field_time;
 	u16 pb_field_time;	    ///< like above, just for interlaced
 	int real_sprite_warping_points;
 	int sprite_offset[2][2];	     ///< sprite offset[isChroma][isMVY]
 	int sprite_delta[2][2];	     ///< sprite_delta [isY][isMVY]
 	int mcsel;
 	int partitioned_frame;	     ///< is current frame partitioned
 	int top_field_first;
 	int alternate_scan;
 	int last_dc[3];                ///< last DC values for MPEG-1
 	int dct_precision;
 	int intra_dc_precision;
 	int frame_pred_frame_dct;
 	int q_scale_type;
 	int context_reinit;
 	int chroma_format;
 };

 struct mpeg4_dec_param {
 	struct MpegEncContext m;

 	/// number of bits to represent the fractional part of time
 	int time_increment_bits;
 	int shape;
 	int vol_sprite_usage;
 	int sprite_brightness_change;
 	int num_sprite_warping_points;
 	/// sprite trajectory points
 	u16 sprite_traj[4][2];
 	/// sprite shift [isChroma]
 	int sprite_shift[2];

 	// reversible vlc
 	int rvlc;
 	/// could this stream contain resync markers
 	int resync_marker;
 	/// time distance of first I -> B, used for interlaced B-frames
 	int t_frame;

 	int new_pred;
 	int enhancement_type;
 	int scalability;
 	int use_intra_dc_vlc;

 	/// QP above which the ac VLC should be used for intra dc
 	int intra_dc_threshold;

 	/* bug workarounds */
 	int divx_version;
 	int divx_build;
 	int xvid_build;
 	int lavc_build;

 	/// flag for having shown the warning about invalid Divx B-frames
 	int showed_packed_warning;
 	/** does the stream contain the low_delay flag,
 	*  used to work around buggy encoders. */
 	int vol_control_parameters;
 	int cplx_estimation_trash_i;
 	int cplx_estimation_trash_p;
 	int cplx_estimation_trash_b;

 	struct VLC studio_intra_tab[12];
 	struct VLC studio_luma_dc;
 	struct VLC studio_chroma_dc;

 	int rgb;

 	struct AVRational time_base;
 	int ticks_per_frame;
 	struct AVRational sample_aspect_ratio;
 	enum AVColorPrimaries color_primaries;
 	enum AVColorTransferCharacteristic color_trc;
 	enum AVColorSpace colorspace;
 #ifdef CONFIG_AMLOGIC_MEDIA_V4L_SOFTWARE_PARSER
 	enum AVPixelFormat pix_fmt;
 	enum AVColorRange color_range;
 	enum AVChromaLocation chroma_sample_location;
 #endif
 	int err_recognition;
 	int idct_algo;
 	int bits_per_raw_sample;
 	int profile;
 	int level;
 	struct AVRational framerate;
 	int flags;
 };

 struct mpeg4_param_sets {
 	bool head_parsed;
 	/* currently active parameter sets */
 	struct mpeg4_dec_param dec_ps;
 };

 #ifdef CONFIG_AMLOGIC_MEDIA_V4L_SOFTWARE_PARSER
 int mpeg4_decode_extradata_ps(u8 *buf, int size, struct mpeg4_param_sets *ps);
 #else
 inline int mpeg4_decode_extradata_ps(u8 *buf, int size, struct mpeg4_param_sets *ps) { return -1; }
 #endif

 #endif
	#ifndef AVCODEC_MPEG4VIDEO_H
	#define AVCODEC_MPEG4VIDEO_H

	#include "../aml_vcodec_drv.h"
	#include "../utils/common.h"
	#ifdef CONFIG_AMLOGIC_MEDIA_V4L_SOFTWARE_PARSER
	#include "../utils/pixfmt.h"
	#endif

	//mpeg4 profile
	#define FF_PROFILE_MPEG4_SIMPLE 0
	#define FF_PROFILE_MPEG4_SIMPLE_SCALABLE 1
	#define FF_PROFILE_MPEG4_CORE 2
	#define FF_PROFILE_MPEG4_MAIN 3
	#define FF_PROFILE_MPEG4_N_BIT 4
	#define FF_PROFILE_MPEG4_SCALABLE_TEXTURE 5
	#define FF_PROFILE_MPEG4_SIMPLE_FACE_ANIMATION 6
	#define FF_PROFILE_MPEG4_BASIC_ANIMATED_TEXTURE 7
	#define FF_PROFILE_MPEG4_HYBRID 8
	#define FF_PROFILE_MPEG4_ADVANCED_REAL_TIME 9
	#define FF_PROFILE_MPEG4_CORE_SCALABLE 10
	#define FF_PROFILE_MPEG4_ADVANCED_CODING 11
	#define FF_PROFILE_MPEG4_ADVANCED_CORE 12
	#define FF_PROFILE_MPEG4_ADVANCED_SCALABLE_TEXTURE 13
	#define FF_PROFILE_MPEG4_SIMPLE_STUDIO 14
	#define FF_PROFILE_MPEG4_ADVANCED_SIMPLE 15

	// shapes
	#define RECT_SHAPE 0
	#define BIN_SHAPE 1
	#define BIN_ONLY_SHAPE 2
	#define GRAY_SHAPE 3

	#define SIMPLE_VO_TYPE 1
	#define CORE_VO_TYPE 3
	#define MAIN_VO_TYPE 4
	#define NBIT_VO_TYPE 5
	#define ARTS_VO_TYPE 10
	#define ACE_VO_TYPE 12
	#define SIMPLE_STUDIO_VO_TYPE 14
	#define CORE_STUDIO_VO_TYPE 15
	#define ADV_SIMPLE_VO_TYPE 17

	#define VOT_VIDEO_ID 1
	#define VOT_STILL_TEXTURE_ID 2

	#define FF_PROFILE_UNKNOWN -99
	#define FF_PROFILE_RESERVED -100

	// aspect_ratio_info
	#define EXTENDED_PAR 15

	//vol_sprite_usage / sprite_enable
	#define STATIC_SPRITE 1
	#define GMC_SPRITE 2

	#define MOTION_MARKER 0x1F001
	#define DC_MARKER 0x6B001

	#define VOS_STARTCODE 0x1B0
	#define USER_DATA_STARTCODE 0x1B2
	#define GOP_STARTCODE 0x1B3
	#define VISUAL_OBJ_STARTCODE 0x1B5
	#define VOP_STARTCODE 0x1B6
	#define SLICE_STARTCODE 0x1B7
	#define EXT_STARTCODE 0x1B8

	#define QUANT_MATRIX_EXT_ID 0x3

	/* smaller packets likely don't contain a real frame */
	#define MAX_NVOP_SIZE 19

	#define IS_3IV1 0

	#define CHROMA_420 1
	#define CHROMA_422 2
	#define CHROMA_444 3

	#define FF_ASPECT_EXTENDED 15

	#define AV_NOPTS_VALUE (LONG_MIN)

	/**
	* Return value for header parsers if frame is not coded.
	* */
	#define FRAME_SKIPPED 100

	enum AVPictureType {
	AV_PICTURE_TYPE_NONE = 0, ///< Undefined
	AV_PICTURE_TYPE_I, ///< Intra
	AV_PICTURE_TYPE_P, ///< Predicted
	AV_PICTURE_TYPE_B, ///< Bi-dir predicted
	AV_PICTURE_TYPE_S, ///< S(GMC)-VOP MPEG-4
	AV_PICTURE_TYPE_SI, ///< Switching Intra
	AV_PICTURE_TYPE_SP, ///< Switching Predicted
	AV_PICTURE_TYPE_BI, ///< BI type
	};

	struct VLC {
	int bits;
	short (*table)[2]; ///< code, bits
	int table_size, table_allocated;
	};

	/**
	* MpegEncContext.
	*/
	struct MpegEncContext {
	struct mpeg4_dec_param *ctx;

	/* the following parameters must be initialized before encoding */
	int width, height;///< picture size. must be a multiple of 16
	int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
	int picture_number; //FIXME remove, unclear definition

	/** matrix transmitted in the bitstream */
	u16 intra_matrix[64];
	u16 chroma_intra_matrix[64];
	u16 inter_matrix[64];
	u16 chroma_inter_matrix[64];

	/* MPEG-4 specific */
	int studio_profile;
	int time_base; ///< time in seconds of last I,P,S Frame
	int quant_precision;
	int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
	int aspect_ratio_info; //FIXME remove
	int sprite_warping_accuracy;
	int data_partitioning; ///< data partitioning flag from header
	int low_delay; ///< no reordering needed / has no B-frames
	int vo_type;
	int mpeg_quant;

	/* divx specific, used to workaround (many) bugs in divx5 */
	int divx_packed;

	/* MPEG-2-specific - I wished not to have to support this mess. */
	int progressive_sequence;

	int progressive_frame;
	int interlaced_dct;

	int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
	const u8 *y_dc_scale_table; ///< qscale -> y_dc_scale table
	const u8 *c_dc_scale_table; ///< qscale -> c_dc_scale table
	int qscale; ///< QP
	int chroma_qscale; ///< chroma QP
	int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
	int f_code; ///< forward MV resolution
	int b_code; ///< backward MV resolution for B-frames (MPEG-4)
	int no_rounding; /**< apply no rounding to motion compensation (MPEG-4, msmpeg4, ...)
	for B-frames rounding mode is always 0 */
	int last_time_base;
	long time; ///< time of current frame
	long last_non_b_time;
	u16 pp_time; ///< time distance between the last 2 p,s,i frames
	u16 pb_time; ///< time distance between the last b and p,s,i frame
	u16 pp_field_time;
	u16 pb_field_time; ///< like above, just for interlaced
	int real_sprite_warping_points;
	int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
	int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
	int mcsel;
	int partitioned_frame; ///< is current frame partitioned
	int top_field_first;
	int alternate_scan;
	int last_dc[3]; ///< last DC values for MPEG-1
	int dct_precision;
	int intra_dc_precision;
	int frame_pred_frame_dct;
	int q_scale_type;
	int context_reinit;
	int chroma_format;
	};

	struct mpeg4_dec_param {
	struct MpegEncContext m;

	/// number of bits to represent the fractional part of time
	int time_increment_bits;
	int shape;
	int vol_sprite_usage;
	int sprite_brightness_change;
	int num_sprite_warping_points;
	/// sprite trajectory points
	u16 sprite_traj[4][2];
	/// sprite shift [isChroma]
	int sprite_shift[2];

	// reversible vlc
	int rvlc;
	/// could this stream contain resync markers
	int resync_marker;
	/// time distance of first I -> B, used for interlaced B-frames
	int t_frame;

	int new_pred;
	int enhancement_type;
	int scalability;
	int use_intra_dc_vlc;

	/// QP above which the ac VLC should be used for intra dc
	int intra_dc_threshold;

	/* bug workarounds */
	int divx_version;
	int divx_build;
	int xvid_build;
	int lavc_build;

	/// flag for having shown the warning about invalid Divx B-frames
	int showed_packed_warning;
	/** does the stream contain the low_delay flag,
	* used to work around buggy encoders. */
	int vol_control_parameters;
	int cplx_estimation_trash_i;
	int cplx_estimation_trash_p;
	int cplx_estimation_trash_b;

	struct VLC studio_intra_tab[12];
	struct VLC studio_luma_dc;
	struct VLC studio_chroma_dc;

	int rgb;

	struct AVRational time_base;
	int ticks_per_frame;
	struct AVRational sample_aspect_ratio;
	enum AVColorPrimaries color_primaries;
	enum AVColorTransferCharacteristic color_trc;
	enum AVColorSpace colorspace;
	#ifdef CONFIG_AMLOGIC_MEDIA_V4L_SOFTWARE_PARSER
	enum AVPixelFormat pix_fmt;
	enum AVColorRange color_range;
	enum AVChromaLocation chroma_sample_location;
	#endif
	int err_recognition;
	int idct_algo;
	int bits_per_raw_sample;
	int profile;
	int level;
	struct AVRational framerate;
	int flags;
	};

	struct mpeg4_param_sets {
	bool head_parsed;
	/* currently active parameter sets */
	struct mpeg4_dec_param dec_ps;
	};

	#ifdef CONFIG_AMLOGIC_MEDIA_V4L_SOFTWARE_PARSER
	int mpeg4_decode_extradata_ps(u8 buf, int size, struct mpeg4_param_sets ps);
	#else
	inline int mpeg4_decode_extradata_ps(u8 buf, int size, struct mpeg4_param_sets ps) { return -1; }
	#endif

	#endif