/* Gstreamer * Copyright (C) <2011> Intel Corporation * Copyright (C) <2011> Collabora Ltd. * Copyright (C) <2011> Thibault Saunier * * From bad/sys/vdpau/mpeg/mpegutil.c: * Copyright (C) <2007> Jan Schmidt * Copyright (C) <2009> Carl-Anton Ingmarsson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifndef __GST_MPEG_VIDEO_UTILS_H__ #define __GST_MPEG_VIDEO_UTILS_H__ #ifndef GST_USE_UNSTABLE_API #warning "The Mpeg video parsing library is unstable API and may change in future." #warning "You can define GST_USE_UNSTABLE_API to avoid this warning." #endif #include G_BEGIN_DECLS /** * GstMpegVideoPacketTypeCode: * @GST_MPEG_VIDEO_PACKET_PICTURE: Picture packet starting code * @GST_MPEG_VIDEO_PACKET_SLICE_MIN: Slice min packet starting code * @GST_MPEG_VIDEO_PACKET_SLICE_MAX: Slice max packet starting code * @GST_MPEG_VIDEO_PACKET_USER_DATA: User data packet starting code * @GST_MPEG_VIDEO_PACKET_SEQUENCE : Sequence packet starting code * @GST_MPEG_VIDEO_PACKET_EXTENSION: Extension packet starting code * @GST_MPEG_VIDEO_PACKET_SEQUENCE_END: Sequence end packet code * @GST_MPEG_VIDEO_PACKET_GOP: Group of Picture packet starting code * @GST_MPEG_VIDEO_PACKET_NONE: None packet code * * Indicates the type of MPEG packet */ typedef enum { GST_MPEG_VIDEO_PACKET_PICTURE = 0x00, GST_MPEG_VIDEO_PACKET_SLICE_MIN = 0x01, GST_MPEG_VIDEO_PACKET_SLICE_MAX = 0xaf, GST_MPEG_VIDEO_PACKET_USER_DATA = 0xb2, GST_MPEG_VIDEO_PACKET_SEQUENCE = 0xb3, GST_MPEG_VIDEO_PACKET_EXTENSION = 0xb5, GST_MPEG_VIDEO_PACKET_SEQUENCE_END = 0xb7, GST_MPEG_VIDEO_PACKET_GOP = 0xb8, GST_MPEG_VIDEO_PACKET_NONE = 0xff } GstMpegVideoPacketTypeCode; /** * GST_MPEG_VIDEO_PACKET_IS_SLICE: * @typecode: The MPEG video packet type code * * Checks whether a packet type code is a slice. * * Returns: %TRUE if the packet type code corresponds to a slice, * else %FALSE. */ #define GST_MPEG_VIDEO_PACKET_IS_SLICE(typecode) ((typecode) >= GST_MPEG_VIDEO_PACKET_SLICE_MIN && \ (typecode) <= GST_MPEG_VIDEO_PACKET_SLICE_MAX) /** * GstMpegVideoPacketExtensionCode: * @GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE: Sequence extension code * @GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE_DISPLAY: Sequence Display extension code * @GST_MPEG_VIDEO_PACKET_EXT_QUANT_MATRIX: Quantization Matrix extension code * @GST_MPEG_VIDEO_PACKET_EXT_PICTURE: Picture coding extension * * Indicates what type of packets are in this block, some are mutually * exclusive though - ie, sequence packs are accumulated separately. GOP & * Picture may occur together or separately. */ typedef enum { GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE = 0x01, GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE_DISPLAY = 0x02, GST_MPEG_VIDEO_PACKET_EXT_QUANT_MATRIX = 0x03, GST_MPEG_VIDEO_PACKET_EXT_PICTURE = 0x08 } GstMpegVideoPacketExtensionCode; /** * GstMpegVideoLevel: * @GST_MPEG_VIDEO_LEVEL_LOW: Low level (LL) * @GST_MPEG_VIDEO_LEVEL_MAIN: Main level (ML) * @GST_MPEG_VIDEO_LEVEL_HIGH_1440: High 1440 level (H-14) * @GST_MPEG_VIDEO_LEVEL_HIGH: High level (HL) * * Mpeg-2 Levels. **/ typedef enum { GST_MPEG_VIDEO_LEVEL_HIGH = 0x04, GST_MPEG_VIDEO_LEVEL_HIGH_1440 = 0x06, GST_MPEG_VIDEO_LEVEL_MAIN = 0x08, GST_MPEG_VIDEO_LEVEL_LOW = 0x0a } GstMpegVideoLevel; /** * GstMpegVideoProfile: * @GST_MPEG_VIDEO_PROFILE_422: 4:2:2 profile (422) * @GST_MPEG_VIDEO_PROFILE_HIGH: High profile (HP) * @GST_MPEG_VIDEO_PROFILE_SPATIALLY_SCALABLE: Spatially Scalable profile (Spatial) * @GST_MPEG_VIDEO_PROFILE_SNR_SCALABLE: SNR Scalable profile (SNR) * @GST_MPEG_VIDEO_PROFILE_MAIN: Main profile (MP) * @GST_MPEG_VIDEO_PROFILE_SIMPLE: Simple profile (SP) * * Mpeg-2 Profiles. **/ typedef enum { GST_MPEG_VIDEO_PROFILE_422 = 0x00, GST_MPEG_VIDEO_PROFILE_HIGH = 0x01, GST_MPEG_VIDEO_PROFILE_SPATIALLY_SCALABLE = 0x02, GST_MPEG_VIDEO_PROFILE_SNR_SCALABLE = 0x03, GST_MPEG_VIDEO_PROFILE_MAIN = 0x04, GST_MPEG_VIDEO_PROFILE_SIMPLE = 0x05 } GstMpegVideoProfile; /** * GstMpegVideoChromaFormat: * @GST_MPEG_VIDEO_CHROMA_RES: Invalid (reserved for future use) * @GST_MPEG_VIDEO_CHROMA_420: 4:2:0 subsampling * @GST_MPEG_VIDEO_CHROMA_422: 4:2:2 subsampling * @GST_MPEG_VIDEO_CHROMA_444: 4:4:4 (non-subsampled) * * Chroma subsampling type. */ typedef enum { GST_MPEG_VIDEO_CHROMA_RES = 0x00, GST_MPEG_VIDEO_CHROMA_420 = 0x01, GST_MPEG_VIDEO_CHROMA_422 = 0x02, GST_MPEG_VIDEO_CHROMA_444 = 0x03, } GstMpegVideoChromaFormat; /** * GstMpegVideoPictureType: * @GST_MPEG_VIDEO_PICTURE_TYPE_I: Intra-coded (I) frame * @GST_MPEG_VIDEO_PICTURE_TYPE_P: Predictive-codec (P) frame * @GST_MPEG_VIDEO_PICTURE_TYPE_B: Bidirectionally predictive-coded (B) frame * @GST_MPEG_VIDEO_PICTURE_TYPE_D: D frame * * Picture type. */ typedef enum { GST_MPEG_VIDEO_PICTURE_TYPE_I = 0x01, GST_MPEG_VIDEO_PICTURE_TYPE_P = 0x02, GST_MPEG_VIDEO_PICTURE_TYPE_B = 0x03, GST_MPEG_VIDEO_PICTURE_TYPE_D = 0x04 } GstMpegVideoPictureType; /** * GstMpegVideoPictureStructure: * @GST_MPEG_VIDEO_PICTURE_STRUCTURE_TOP_FIELD: Top field * @GST_MPEG_VIDEO_PICTURE_STRUCTURE_BOTTOM_FIELD: Bottom field * @GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME: Frame picture * * Picture structure type. */ typedef enum { GST_MPEG_VIDEO_PICTURE_STRUCTURE_TOP_FIELD = 0x01, GST_MPEG_VIDEO_PICTURE_STRUCTURE_BOTTOM_FIELD = 0x02, GST_MPEG_VIDEO_PICTURE_STRUCTURE_FRAME = 0x03 } GstMpegVideoPictureStructure; typedef struct _GstMpegVideoSequenceHdr GstMpegVideoSequenceHdr; typedef struct _GstMpegVideoSequenceExt GstMpegVideoSequenceExt; typedef struct _GstMpegVideoSequenceDisplayExt GstMpegVideoSequenceDisplayExt; typedef struct _GstMpegVideoPictureHdr GstMpegVideoPictureHdr; typedef struct _GstMpegVideoGop GstMpegVideoGop; typedef struct _GstMpegVideoPictureExt GstMpegVideoPictureExt; typedef struct _GstMpegVideoQuantMatrixExt GstMpegVideoQuantMatrixExt; typedef struct _GstMpegVideoPacket GstMpegVideoPacket; /** * GstMpegVideoSequenceHdr: * @width: Width of each frame * @height: Height of each frame * @par_w: Calculated Pixel Aspect Ratio width * @par_h: Calculated Pixel Aspect Ratio height * @fps_n: Calculated Framrate nominator * @fps_d: Calculated Framerate denominator * @bitrate_value: Value of the bitrate as is in the stream (400bps unit) * @bitrate: the real bitrate of the Mpeg video stream in bits per second, 0 if VBR stream * @constrained_parameters_flag: %TRUE if this stream uses contrained parameters. * @intra_quantizer_matrix: intra-quantization table * @non_intra_quantizer_matrix: non-intra quantization table * * The Mpeg2 Video Sequence Header structure. */ struct _GstMpegVideoSequenceHdr { guint16 width, height; guint8 aspect_ratio_info; guint8 frame_rate_code; guint32 bitrate_value; guint16 vbv_buffer_size_value; guint8 constrained_parameters_flag; guint8 intra_quantizer_matrix[64]; guint8 non_intra_quantizer_matrix[64]; /* Calculated values */ guint par_w, par_h; guint fps_n, fps_d; guint bitrate; }; /** * GstMpegVideoSequenceExt: * @profile: mpeg2 decoder profile * @level: mpeg2 decoder level * @progressive: %TRUE if the frames are progressive %FALSE otherwise * @chroma_format: indicates the chrominance format * @horiz_size_ext: Horizontal size * @vert_size_ext: Vertical size * @bitrate_ext: The bitrate * @vbv_buffer_size_extension: VBV vuffer size * @low_delay: %TRUE if the sequence doesn't contain any B-pictures, %FALSE * otherwise * @fps_n_ext: Framerate nominator code * @fps_d_ext: Framerate denominator code * * The Mpeg2 Video Sequence Extension structure. **/ struct _GstMpegVideoSequenceExt { /* mpeg2 decoder profile */ guint8 profile; /* mpeg2 decoder level */ guint8 level; guint8 progressive; guint8 chroma_format; guint8 horiz_size_ext, vert_size_ext; guint16 bitrate_ext; guint8 vbv_buffer_size_extension; guint8 low_delay; guint8 fps_n_ext, fps_d_ext; }; /** * GstMpegVideoSequenceDisplayExt: * @profile: mpeg2 decoder profil */ struct _GstMpegVideoSequenceDisplayExt { guint8 video_format; guint8 colour_description_flag; /* if colour_description_flag: */ guint8 colour_primaries; guint8 transfer_characteristics; guint8 matrix_coefficients; guint16 display_horizontal_size; guint16 display_vertical_size; }; /** * GstMpegVideoQuantMatrixExt: * @load_intra_quantiser_matrix: * @intra_quantiser_matrix: * @load_non_intra_quantiser_matrix: * @non_intra_quantiser_matrix: * @load_chroma_intra_quantiser_matrix: * @chroma_intra_quantiser_matrix: * @load_chroma_non_intra_quantiser_matrix: * @chroma_non_intra_quantiser_matrix: * * The Quant Matrix Extension structure */ struct _GstMpegVideoQuantMatrixExt { guint8 load_intra_quantiser_matrix; guint8 intra_quantiser_matrix[64]; guint8 load_non_intra_quantiser_matrix; guint8 non_intra_quantiser_matrix[64]; guint8 load_chroma_intra_quantiser_matrix; guint8 chroma_intra_quantiser_matrix[64]; guint8 load_chroma_non_intra_quantiser_matrix; guint8 chroma_non_intra_quantiser_matrix[64]; }; /** * GstMpegVideoPictureHdr: * @tsn: Temporal Sequence Number * @pic_type: Type of the frame * @full_pel_forward_vector: the full pel forward flag of * the frame: 0 or 1. * @full_pel_backward_vector: the full pel backward flag * of the frame: 0 or 1. * @f_code: F code * * The Mpeg2 Video Picture Header structure. */ struct _GstMpegVideoPictureHdr { guint16 tsn; guint8 pic_type; guint8 full_pel_forward_vector, full_pel_backward_vector; guint8 f_code[2][2]; }; /** * GstMpegVideoPictureExt: * @intra_dc_precision: Intra DC precision * @picture_structure: Structure of the picture * @top_field_first: Top field first * @frame_pred_frame_dct: Frame * @concealment_motion_vectors: Concealment Motion Vectors * @q_scale_type: Q Scale Type * @intra_vlc_format: Intra Vlc Format * @alternate_scan: Alternate Scan * @repeat_first_field: Repeat First Field * @chroma_420_type: Chroma 420 Type * @progressive_frame: %TRUE if the frame is progressive %FALSE otherwize * * The Mpeg2 Video Picture Extension structure. */ struct _GstMpegVideoPictureExt { guint8 f_code[2][2]; guint8 intra_dc_precision; guint8 picture_structure; guint8 top_field_first; guint8 frame_pred_frame_dct; guint8 concealment_motion_vectors; guint8 q_scale_type; guint8 intra_vlc_format; guint8 alternate_scan; guint8 repeat_first_field; guint8 chroma_420_type; guint8 progressive_frame; guint8 composite_display; guint8 v_axis; guint8 field_sequence; guint8 sub_carrier; guint8 burst_amplitude; guint8 sub_carrier_phase; }; /** * GstMpegVideoGop: * @drop_frame_flag: Drop Frame Flag * @hour: Hour (0-23) * @minute: Minute (O-59) * @second: Second (0-59) * @frame: Frame (0-59) * @closed_gop: Closed Gop * @broken_link: Broken link * * The Mpeg Video Group of Picture structure. */ struct _GstMpegVideoGop { guint8 drop_frame_flag; guint8 hour, minute, second, frame; guint8 closed_gop; guint8 broken_link; }; /** * GstMpegVideoTypeOffsetSize: * * @type: the type of the packet that start at @offset * @data: the data containing the packet starting at @offset * @offset: the offset of the packet start in bytes, it is the exact, start of the packet, no sync code included * @size: The size in bytes of the packet or -1 if the end wasn't found. It is the exact size of the packet, no sync code included * * A structure that contains the type of a packet, its offset and its size */ struct _GstMpegVideoPacket { const guint8 *data; guint8 type; guint offset; gint size; }; gboolean gst_mpeg_video_parse (GstMpegVideoPacket * packet, const guint8 * data, gsize size, guint offset); gboolean gst_mpeg_video_parse_sequence_header (GstMpegVideoSequenceHdr * params, const guint8 * data, gsize size, guint offset); /* seqext and displayext may be NULL if not received */ gboolean gst_mpeg_video_finalise_mpeg2_sequence_header (GstMpegVideoSequenceHdr *hdr, GstMpegVideoSequenceExt *seqext, GstMpegVideoSequenceDisplayExt *displayext); gboolean gst_mpeg_video_parse_picture_header (GstMpegVideoPictureHdr* hdr, const guint8 * data, gsize size, guint offset); gboolean gst_mpeg_video_parse_picture_extension (GstMpegVideoPictureExt *ext, const guint8 * data, gsize size, guint offset); gboolean gst_mpeg_video_parse_gop (GstMpegVideoGop * gop, const guint8 * data, gsize size, guint offset); gboolean gst_mpeg_video_parse_sequence_extension (GstMpegVideoSequenceExt * seqext, const guint8 * data, gsize size, guint offset); gboolean gst_mpeg_video_parse_sequence_display_extension (GstMpegVideoSequenceDisplayExt * seqdisplayext, const guint8 * data, gsize size, guint offset); gboolean gst_mpeg_video_parse_quant_matrix_extension (GstMpegVideoQuantMatrixExt * quant, const guint8 * data, gsize size, guint offset); G_END_DECLS #endif