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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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codecparsers: jpeg: tweak API a little
https://bugzilla.gnome.org/show_bug.cgi?id=673925
This commit is contained in:
Tim-Philipp Müller
parent
441478d161
commit
4a85958909
2 changed files with 84 additions and 29 deletions
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@ -1,6 +1,4 @@
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/*
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* gstjpegparser.c - JPEG parser
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*
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/* GStreamer JPEG parser
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* Copyright (C) 2011-2012 Intel Corporation
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*
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* This library is free software; you can redistribute it and/or
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@ -261,7 +259,7 @@ gst_jpeg_scan_for_marker_code (const guint8 * data, gsize size, guint offset)
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}
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gboolean
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gst_jpeg_parse_frame_hdr (GstJpegFrameHdr * frame_hdr,
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gst_jpeg_parse_frame_header (GstJpegFrameHdr * frame_hdr,
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const guint8 * data, gsize size, guint offset)
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{
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GstByteReader br;
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@ -306,7 +304,7 @@ gst_jpeg_parse_frame_hdr (GstJpegFrameHdr * frame_hdr,
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}
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gboolean
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gst_jpeg_parse_scan_hdr (GstJpegScanHdr * scan_hdr,
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gst_jpeg_parse_scan_header (GstJpegScanHdr * scan_hdr,
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const guint8 * data, gsize size, guint offset)
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{
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GstByteReader br;
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@ -550,7 +548,7 @@ gst_jpeg_get_default_quantization_tables (GstJpegQuantTables * quant_tables)
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}
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gboolean
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gst_jpeg_parse (GstJpegMarkerSegment * seg,
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gst_jpeg_parse (GstJpegSegment * seg,
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const guint8 * data, gsize size, guint offset)
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{
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GstByteReader br;
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@ -1,6 +1,5 @@
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/*
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* gstjpegparser.h - JPEG parser
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*
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* GStreamer JPEG parser
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* Copyright (C) 2011-2012 Intel Corporation
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*
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* This library is free software; you can redistribute it and/or
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@ -60,7 +59,7 @@ typedef struct _GstJpegScanComponent GstJpegScanComponent;
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typedef struct _GstJpegScanHdr GstJpegScanHdr;
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typedef struct _GstJpegFrameComponent GstJpegFrameComponent;
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typedef struct _GstJpegFrameHdr GstJpegFrameHdr;
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typedef struct _GstJpegMarkerSegment GstJpegMarkerSegment;
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typedef struct _GstJpegSegment GstJpegSegment;
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/**
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* GstJpegMarkerCode:
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@ -76,30 +75,87 @@ typedef struct _GstJpegMarkerSegment GstJpegMarkerSegment;
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* @GST_JPEG_MARKER_DQT: Define quantization table marker code
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* @GST_JPEG_MARKER_DNL: Define number of lines marker code
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* @GST_JPEG_MARKER_DRI: Define restart interval marker code
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* @GST_JPEG_MARKER_APP_MIN: Application segment min marker code
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* @GST_JPEG_MARKER_APP_MAX: Application segment max marker code
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* @GST_JPEG_MARKER_APP0: Application segment 0 marker code
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* @GST_JPEG_MARKER_APP1: Application segment 1 marker code
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* @GST_JPEG_MARKER_APP2: Application segment 2 marker code
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* @GST_JPEG_MARKER_APP3: Application segment 3 marker code
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* @GST_JPEG_MARKER_APP4: Application segment 4 marker code
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* @GST_JPEG_MARKER_APP5: Application segment 5 marker code
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* @GST_JPEG_MARKER_APP6: Application segment 6 marker code
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* @GST_JPEG_MARKER_APP7: Application segment 7 marker code
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* @GST_JPEG_MARKER_APP8: Application segment 8 marker code
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* @GST_JPEG_MARKER_APP9: Application segment 9 marker code
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* @GST_JPEG_MARKER_APP10: Application segment 10 marker code
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* @GST_JPEG_MARKER_APP11: Application segment 11 marker code
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* @GST_JPEG_MARKER_APP12: Application segment 12 marker code
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* @GST_JPEG_MARKER_APP13: Application segment 13 marker code
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* @GST_JPEG_MARKER_APP14: Application segment 14 marker code
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* @GST_JPEG_MARKER_APP15: Application segment 15 marker code
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* @GST_JPEG_MARKER_COM: Comment marker code
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*
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* Indicates the type of JPEG segment.
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*/
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typedef enum {
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GST_JPEG_MARKER_SOF_MIN = 0xC0,
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GST_JPEG_MARKER_SOF_MAX = 0xCF,
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GST_JPEG_MARKER_SOF0 = 0xC0,
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GST_JPEG_MARKER_SOF1 = 0xC1,
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GST_JPEG_MARKER_SOF2 = 0xC2,
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GST_JPEG_MARKER_SOF3 = 0xC3,
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GST_JPEG_MARKER_SOF4 = 0xC4,
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GST_JPEG_MARKER_SOF5 = 0xC5,
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GST_JPEG_MARKER_SOF6 = 0xC6,
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GST_JPEG_MARKER_SOF7 = 0xC7,
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GST_JPEG_MARKER_SOF8 = 0xC8,
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GST_JPEG_MARKER_SOF9 = 0xC9,
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GST_JPEG_MARKER_SOF10 = 0xCA,
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GST_JPEG_MARKER_SOF11 = 0xCB,
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GST_JPEG_MARKER_SOF12 = 0xCC,
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GST_JPEG_MARKER_SOF13 = 0xCD,
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GST_JPEG_MARKER_SOF14 = 0xCE,
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GST_JPEG_MARKER_SOF15 = 0xCF,
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GST_JPEG_MARKER_DHT = 0xC4,
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GST_JPEG_MARKER_DAC = 0xCC,
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GST_JPEG_MARKER_RST_MIN = 0xD0,
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GST_JPEG_MARKER_RST_MAX = 0xD7,
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GST_JPEG_MARKER_RST0 = 0xD0,
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GST_JPEG_MARKER_RST1 = 0xD1,
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GST_JPEG_MARKER_RST2 = 0xD2,
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GST_JPEG_MARKER_RST3 = 0xD3,
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GST_JPEG_MARKER_RST4 = 0xD4,
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GST_JPEG_MARKER_RST5 = 0xD5,
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GST_JPEG_MARKER_RST6 = 0xD6,
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GST_JPEG_MARKER_RST7 = 0xD7,
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GST_JPEG_MARKER_SOI = 0xD8,
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GST_JPEG_MARKER_EOI = 0xD9,
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GST_JPEG_MARKER_SOS = 0xDA,
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GST_JPEG_MARKER_DQT = 0xDB,
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GST_JPEG_MARKER_DNL = 0xDC,
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GST_JPEG_MARKER_DRI = 0xDD,
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GST_JPEG_MARKER_APP_MIN = 0xE0,
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GST_JPEG_MARKER_APP_MAX = 0xEF,
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GST_JPEG_MARKER_APP0 = 0xE0,
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GST_JPEG_MARKER_APP1 = 0xE1,
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GST_JPEG_MARKER_APP2 = 0xE2,
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GST_JPEG_MARKER_APP3 = 0xE3,
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GST_JPEG_MARKER_APP4 = 0xE4,
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GST_JPEG_MARKER_APP5 = 0xE5,
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GST_JPEG_MARKER_APP6 = 0xE6,
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GST_JPEG_MARKER_APP7 = 0xE7,
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GST_JPEG_MARKER_APP8 = 0xE8,
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GST_JPEG_MARKER_APP9 = 0xE9,
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GST_JPEG_MARKER_APP10 = 0xEA,
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GST_JPEG_MARKER_APP11 = 0xEB,
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GST_JPEG_MARKER_APP12 = 0xEC,
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GST_JPEG_MARKER_APP13 = 0xED,
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GST_JPEG_MARKER_APP14 = 0xEE,
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GST_JPEG_MARKER_APP15 = 0xEF,
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GST_JPEG_MARKER_COM = 0xFE,
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} GstJpegMarkerCode;
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#define GST_JPEG_MARKER_SOF_MIN GST_JPEG_MARKER_SOF0
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#define GST_JPEG_MARKER_SOF_MAX GST_JPEG_MARKER_SOF15
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#define GST_JPEG_MARKER_APP_MIN GST_JPEG_MARKER_APP0
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#define GST_JPEG_MARKER_APP_MAX GST_JPEG_MARKER_APP15
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#define GST_JPEG_MARKER_RST_MIN GST_JPEG_MARKER_RST0
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#define GST_JPEG_MARKER_RST_MAX GST_JPEG_MARKER_RST7
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/**
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* GstJpegProfile:
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* @GST_JPEG_PROFILE_BASELINE: Baseline DCT
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@ -252,7 +308,7 @@ struct _GstJpegFrameHdr
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};
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/**
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* GstJpegMarkerSegment:
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* GstJpegSegment:
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* @type: The type of the segment that starts at @offset
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* @offset: The offset to the segment start in bytes. This is the
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* exact start of the segment, no marker code included
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@ -261,7 +317,7 @@ struct _GstJpegFrameHdr
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*
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* A structure that contains the type of a segment, its offset and its size.
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*/
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struct _GstJpegMarkerSegment
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struct _GstJpegSegment
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{
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guint8 marker;
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guint offset;
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@ -270,48 +326,49 @@ struct _GstJpegMarkerSegment
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/**
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* gst_jpeg_parse:
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* @seg: (out): pointer to a #GstJpegSegment structure to fill in
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* @data: The data to parse
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* @size: The size of @data
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* @offset: The offset from which to start parsing
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*
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* Parses the JPEG bitstream contained in @data, and returns the
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* detected segment as a #GstJpegMarkerSegment.
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* detected segment as a #GstJpegSegment.
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*
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* Returns: TRUE if a packet start code was found.
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*/
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gboolean gst_jpeg_parse (GstJpegMarkerSegment * seg,
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gboolean gst_jpeg_parse (GstJpegSegment * seg,
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const guint8 * data,
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gsize size,
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guint offset);
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/**
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* gst_jpeg_parse_frame_hdr:
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* @hdr: (out): The #GstJpegFrameHdr structure to fill in
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* gst_jpeg_parse_frame_header:
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* @frame_hdr: (out): The #GstJpegFrameHdr structure to fill in
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* @data: The data from which to parse the frame header
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* @size: The size of @data
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* @offset: The offset in bytes from which to start parsing @data
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*
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* Parses the @hdr JPEG frame header structure members from @data.
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* Parses the @frame_hdr JPEG frame header structure members from @data.
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*
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* Returns: TRUE if the frame header was correctly parsed.
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*/
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gboolean gst_jpeg_parse_frame_hdr (GstJpegFrameHdr * hdr,
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gboolean gst_jpeg_parse_frame_header (GstJpegFrameHdr * frame_hdr,
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const guint8 * data,
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gsize size,
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guint offset);
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/**
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* gst_jpeg_parse_scan_hdr:
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* @hdr: (out): The #GstJpegScanHdr structure to fill in
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* gst_jpeg_parse_scan_header:
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* @scan_hdr: (out): The #GstJpegScanHdr structure to fill in
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* @data: The data from which to parse the scan header
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* @size: The size of @data
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* @offset: The offset in bytes from which to start parsing @data
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*
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* Parses the @hdr JPEG scan header structure members from @data.
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* Parses the @scan_hdr JPEG scan header structure members from @data.
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*
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* Returns: TRUE if the scan header was correctly parsed
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*/
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gboolean gst_jpeg_parse_scan_hdr (GstJpegScanHdr * hdr,
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gboolean gst_jpeg_parse_scan_header (GstJpegScanHdr * scan_hdr,
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const guint8 * data,
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gsize size,
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guint offset);
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