| Top |
| enum | GstMpegVideoPacketTypeCode |
| enum | GstMpegVideoPacketExtensionCode |
| enum | GstMpegVideoLevel |
| enum | GstMpegVideoProfile |
| enum | GstMpegVideoPictureType |
| enum | GstMpegVideoPictureStructure |
| struct | GstMpegVideoSequenceHdr |
| struct | GstMpegVideoSequenceExt |
| struct | GstMpegVideoPictureHdr |
| struct | GstMpegVideoGop |
| struct | GstMpegVideoPictureExt |
| struct | GstMpegVideoQuantMatrixExt |
gboolean gst_mpeg_video_parse (GstMpegVideoPacket *packet,const guint8 *data,gsize size,guint offset);
Parses the MPEG 1/2 video bitstream contained in data
, and returns the
offset, and if known also the size, in packet
. This function will scan
the data to find the next packet if needed.
gboolean gst_mpeg_video_parse_sequence_header (GstMpegVideoSequenceHdr *seqhdr,const guint8 *data,gsize size,guint offset);
gst_mpeg_video_parse_sequence_header is deprecated and should not be used in newly-written code.
Use gst_mpeg_video_packet_parse_sequence_header() instead.
Parses the seqhdr
Mpeg Video Sequence Header structure members from data
seqhdr |
The GstMpegVideoSequenceHdr structure to fill. |
[out] |
data |
The data from which to parse the sequence header |
|
size |
The size of |
|
offset |
The offset in byte from which to start parsing |
gboolean gst_mpeg_video_parse_picture_header (GstMpegVideoPictureHdr *hdr,const guint8 *data,gsize size,guint offset);
gst_mpeg_video_parse_picture_header is deprecated and should not be used in newly-written code.
Use gst_mpeg_video_packet_parse_picture_header() instead.
Parsers the hdr
Mpeg Video Picture Header structure members from data
hdr |
The GstMpegVideoPictureHdr structure to fill. |
[out] |
data |
The data from which to parse the picture header |
|
size |
The size of |
|
offset |
The offset in byte from which to start the parsing |
gboolean gst_mpeg_video_parse_picture_extension (GstMpegVideoPictureExt *ext,const guint8 *data,gsize size,guint offset);
gst_mpeg_video_parse_picture_extension is deprecated and should not be used in newly-written code.
Use gst_mpeg_video_packet_parse_picture_extension() instead.
Parse the ext
Mpeg Video Picture Extension structure members from data
ext |
The GstMpegVideoPictureExt structure to fill. |
[out] |
data |
The data from which to parse the picture extension |
|
size |
The size of |
|
offset |
The offset in byte from which to start the parsing |
gboolean gst_mpeg_video_parse_gop (GstMpegVideoGop *gop,const guint8 *data,gsize size,guint offset);
gst_mpeg_video_parse_gop is deprecated and should not be used in newly-written code.
Use gst_mpeg_video_packet_parse_gop() instead.
Parses the gop
Mpeg Video Group of Picture structure members from data
gop |
The GstMpegVideoGop structure to fill. |
[out] |
data |
The data from which to parse the gop |
|
size |
The size of |
|
offset |
The offset in byte from which to start the parsing |
gboolean gst_mpeg_video_parse_sequence_extension (GstMpegVideoSequenceExt *seqext,const guint8 *data,gsize size,guint offset);
gst_mpeg_video_parse_sequence_extension is deprecated and should not be used in newly-written code.
Use gst_mpeg_video_packet_parse_sequence_extension() instead.
Parses the seqext
Mpeg Video Sequence Extension structure members from data
seqext |
The GstMpegVideoSequenceExt structure to fill. |
[out] |
data |
The data from which to parse the sequence extension |
|
size |
The size of |
|
offset |
The offset in byte from which to start parsing |
gboolean gst_mpeg_video_parse_sequence_display_extension (GstMpegVideoSequenceDisplayExt *seqdisplayext,const guint8 *data,gsize size,guint offset);
gst_mpeg_video_parse_sequence_display_extension is deprecated and should not be used in newly-written code.
gboolean gst_mpeg_video_parse_quant_matrix_extension (GstMpegVideoQuantMatrixExt *quant,const guint8 *data,gsize size,guint offset);
gst_mpeg_video_parse_quant_matrix_extension is deprecated and should not be used in newly-written code.
Use gst_mpeg_video_packet_parse_quant_matrix_extension() instead.
Parses the quant
Mpeg Video Quant Matrix Extension structure members from
data
quant |
The GstMpegVideoQuantMatrixExt structure to fill. |
[out] |
data |
The data from which to parse the Quantization Matrix extension |
|
size |
The size of |
|
offset |
The offset in byte from which to start the parsing |
gboolean gst_mpeg_video_finalise_mpeg2_sequence_header (GstMpegVideoSequenceHdr *hdr,GstMpegVideoSequenceExt *seqext,GstMpegVideoSequenceDisplayExt *displayext);
void gst_mpeg_video_quant_matrix_get_raster_from_zigzag (guint8 out_quant[64],const guint8 quant[64]);
Converts quantization matrix quant
from zigzag scan order to
raster scan order and store the resulting factors into out_quant
.
Note: it is an error to pass the same table in both quant
and
out_quant
arguments.
Since 1.2
void gst_mpeg_video_quant_matrix_get_zigzag_from_raster (guint8 out_quant[64],const guint8 quant[64]);
Converts quantization matrix quant
from raster scan order to
zigzag scan order and store the resulting factors into out_quant
.
Note: it is an error to pass the same table in both quant
and
out_quant
arguments.
Since 1.2
Indicates the type of MPEG packet
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.
Mpeg-2 Profiles.
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;
};
The Mpeg2 Video Sequence Header structure.
Width of each frame |
||
Height of each frame |
||
Value of the bitrate as is in the stream (400bps unit) |
||
|
||
intra-quantization table, in zigzag scan order |
||
non-intra quantization table, in zigzag scan order |
||
guint |
Calculated Pixel Aspect Ratio width |
|
guint |
Calculated Pixel Aspect Ratio height |
|
guint |
Calculated Framrate nominator |
|
guint |
Calculated Framerate denominator |
|
guint |
the real bitrate of the Mpeg video stream in bits per second, 0 if VBR stream |
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;
};
The Mpeg2 Video Sequence Extension structure.
struct GstMpegVideoPictureHdr {
guint16 tsn;
guint8 pic_type;
guint8 full_pel_forward_vector, full_pel_backward_vector;
guint8 f_code[2][2];
};
The Mpeg2 Video Picture Header structure.
struct GstMpegVideoGop {
guint8 drop_frame_flag;
guint8 hour, minute, second, frame;
guint8 closed_gop;
guint8 broken_link;
};
The Mpeg Video Group of Picture 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;
};
The Mpeg2 Video Picture 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];
};
The Quant Matrix Extension structure that exposes quantization matrices in zigzag scan order. i.e. the original encoded scan order.