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codecparsers: jpeg: add JPEG bitstream parser

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Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>

https://bugzilla.gnome.org/show_bug.cgi?id=673925
This commit is contained in:
Gwenole Beauchesne 2012-09-12 10:40:06 +02:00 committed by Tim-Philipp Müller
parent 1bf7ca64c0
commit 7e7b4d68f4
3 changed files with 1027 additions and 0 deletions
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2
gst-libs/gst/codecparsers/Makefile.am
View file

@ -4,6 +4,7 @@ libgstcodecparsers_@GST_API_VERSION@_la_SOURCES = \
gstmpegvideoparser.c gsth264parser.c gstvc1parser.c gstmpeg4parser.c \
gsth265parser.c gstvp8parser.c gstvp8rangedecoder.c \
parserutils.c nalutils.c dboolhuff.c vp8utils.c \
gstjpegparser.c \
gstmpegvideometa.c
libgstcodecparsers_@GST_API_VERSION@includedir = \
@ -14,6 +15,7 @@ noinst_HEADERS = parserutils.h nalutils.h dboolhuff.h vp8utils.h
libgstcodecparsers_@GST_API_VERSION@include_HEADERS = \
gstmpegvideoparser.h gsth264parser.h gstvc1parser.h gstmpeg4parser.h \
gsth265parser.h gstvp8parser.h gstvp8rangedecoder.h \
gstjpegparser.h \
gstmpegvideometa.h
libgstcodecparsers_@GST_API_VERSION@_la_CFLAGS = \

611
gst-libs/gst/codecparsers/gstjpegparser.c Normal file
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@ -0,0 +1,611 @@
/*
* gstjpegparser.c - JPEG parser
*
* Copyright (C) 2011-2012 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include <string.h>
#include <stdlib.h>
#include <gst/base/gstbytereader.h>
#include "gstjpegparser.h"
#ifndef GST_DISABLE_GST_DEBUG
#define GST_CAT_DEFAULT ensure_debug_category()
static GstDebugCategory *
ensure_debug_category (void)
{
static gsize cat_gonce = 0;
if (g_once_init_enter (&cat_gonce)) {
gsize cat_done;
cat_done = (gsize) _gst_debug_category_new ("codecparsers_jpeg", 0,
"GstJpegCodecParser");
g_once_init_leave (&cat_gonce, cat_done);
}
return (GstDebugCategory *) cat_gonce;
}
#else
#define ensure_debug_category() /* NOOP */
#endif /* GST_DISABLE_GST_DEBUG */
#define DEBUG_PRINT_COMMENT 0
#define READ_UINT8(reader, val) G_STMT_START { \
if (!gst_byte_reader_get_uint8 ((reader), &(val))) { \
GST_WARNING ("failed to read uint8"); \
goto failed; \
} \
} G_STMT_END
#define READ_UINT16(reader, val) G_STMT_START { \
if (!gst_byte_reader_get_uint16_be ((reader), &(val))) { \
GST_WARNING ("failed to read uint16"); \
goto failed; \
} \
} G_STMT_END
#define READ_BYTES(reader, buf, length) G_STMT_START { \
const guint8 *vals; \
if (!gst_byte_reader_get_data (reader, length, &vals)) { \
GST_WARNING ("failed to read bytes, size:%d", length); \
goto failed; \
} \
memcpy (buf, vals, length); \
} G_STMT_END
#define U_READ_UINT8(reader, val) G_STMT_START { \
(val) = gst_byte_reader_get_uint8_unchecked(reader); \
} G_STMT_END
#define U_READ_UINT16(reader, val) G_STMT_START { \
(val) = gst_byte_reader_get_uint16_be_unchecked(reader); \
} G_STMT_END
/* Table used to address an 8x8 matrix in zig-zag order */
/* *INDENT-OFF* */
static const guint8 zigzag_index[64] = {
0, 1, 8, 16, 9, 2, 3, 10,
17, 24, 32, 25, 18, 11, 4, 5,
12, 19, 26, 33, 40, 48, 41, 34,
27, 20, 13, 6, 7, 14, 21, 28,
35, 42, 49, 56, 57, 50, 43, 36,
29, 22, 15, 23, 30, 37, 44, 51,
58, 59, 52, 45, 38, 31, 39, 46,
53, 60, 61, 54, 47, 55, 62, 63
};
/* *INDENT-ON* */
/* Table K.1 - Luminance quantization table */
/* *INDENT-OFF* */
static const guint8 default_luminance_quant_table[64] = {
16, 11, 10, 16, 24, 40, 51, 61,
12, 12, 14, 19, 26, 58, 60, 55,
14, 13, 16, 24, 40, 57, 69, 56,
14, 17, 22, 29, 51, 87, 80, 62,
18, 22, 37, 56, 68, 109, 103, 77,
24, 35, 55, 64, 81, 104, 113, 92,
49, 64, 78, 87, 103, 121, 120, 101,
72, 92, 95, 98, 112, 100, 103, 99
};
/* *INDENT-ON* */
/* Table K.2 - Chrominance quantization table */
/* *INDENT-OFF* */
static const guint8 default_chrominance_quant_table[64] = {
17, 18, 24, 47, 99, 99, 99, 99,
18, 21, 26, 66, 99, 99, 99, 99,
24, 26, 56, 99, 99, 99, 99, 99,
47, 66, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99
};
/* *INDENT-ON* */
typedef struct _GstJpegHuffmanTableEntry GstJpegHuffmanTableEntry;
struct _GstJpegHuffmanTableEntry
{
guint8 value; /* category */
guint8 length; /* code length in bits */
};
/* Table K.3 - Table for luminance DC coefficient differences */
static const GstJpegHuffmanTableEntry default_luminance_dc_table[] = {
{0x00, 2}, {0x01, 3}, {0x02, 3}, {0x03, 3}, {0x04, 3}, {0x05, 3},
{0x06, 4}, {0x07, 5}, {0x08, 6}, {0x09, 7}, {0x0a, 8}, {0x0b, 9}
};
/* Table K.4 - Table for chrominance DC coefficient differences */
static const GstJpegHuffmanTableEntry default_chrominance_dc_table[] = {
{0x00, 2}, {0x01, 2}, {0x02, 2}, {0x03, 3}, {0x04, 4}, {0x05, 5},
{0x06, 6}, {0x07, 7}, {0x08, 8}, {0x09, 9}, {0x0a, 10}, {0x0b, 11}
};
/* Table K.5 - Table for luminance AC coefficients */
/* *INDENT-OFF* */
static const GstJpegHuffmanTableEntry default_luminance_ac_table[] = {
{0x00, 4}, {0x01, 2}, {0x02, 2}, {0x03, 3}, {0x04, 4}, {0x05, 5},
{0x06, 7}, {0x07, 8}, {0x08, 10}, {0x09, 16}, {0x0a, 16}, {0x11, 4},
{0x12, 5}, {0x13, 7}, {0x14, 9}, {0x15, 11}, {0x16, 16}, {0x17, 16},
{0x18, 16}, {0x19, 16}, {0x1a, 16}, {0x21, 5}, {0x22, 8}, {0x23, 10},
{0x24, 12}, {0x25, 16}, {0x26, 16}, {0x27, 16}, {0x28, 16}, {0x29, 16},
{0x2a, 16}, {0x31, 6}, {0x32, 9}, {0x33, 12}, {0x34, 16}, {0x35, 16},
{0x36, 16}, {0x37, 16}, {0x38, 16}, {0x39, 16}, {0x3a, 16}, {0x41, 6},
{0x42, 10}, {0x43, 16}, {0x44, 16}, {0x45, 16}, {0x46, 16}, {0x47, 16},
{0x48, 16}, {0x49, 16}, {0x4a, 16}, {0x51, 7}, {0x52, 11}, {0x53, 16},
{0x54, 16}, {0x55, 16}, {0x56, 16}, {0x57, 16}, {0x58, 16}, {0x59, 16},
{0x5a, 16}, {0x61, 7}, {0x62, 12}, {0x63, 16}, {0x64, 16}, {0x65, 16},
{0x66, 16}, {0x67, 16}, {0x68, 16}, {0x69, 16}, {0x6a, 16}, {0x71, 8},
{0x72, 12}, {0x73, 16}, {0x74, 16}, {0x75, 16}, {0x76, 16}, {0x77, 16},
{0x78, 16}, {0x79, 16}, {0x7a, 16}, {0x81, 9}, {0x82, 15}, {0x83, 16},
{0x84, 16}, {0x85, 16}, {0x86, 16}, {0x87, 16}, {0x88, 16}, {0x89, 16},
{0x8a, 16}, {0x91, 9}, {0x92, 16}, {0x93, 16}, {0x94, 16}, {0x95, 16},
{0x96, 16}, {0x97, 16}, {0x98, 16}, {0x99, 16}, {0x9a, 16}, {0xa1, 9},
{0xa2, 16}, {0xa3, 16}, {0xa4, 16}, {0xa5, 16}, {0xa6, 16}, {0xa7, 16},
{0xa8, 16}, {0xa9, 16}, {0xaa, 16}, {0xb1, 10}, {0xb2, 16}, {0xb3, 16},
{0xb4, 16}, {0xb5, 16}, {0xb6, 16}, {0xb7, 16}, {0xb8, 16}, {0xb9, 16},
{0xba, 16}, {0xc1, 10}, {0xc2, 16}, {0xc3, 16}, {0xc4, 16}, {0xc5, 16},
{0xc6, 16}, {0xc7, 16}, {0xc8, 16}, {0xc9, 16}, {0xca, 16}, {0xd1, 11},
{0xd2, 16}, {0xd3, 16}, {0xd4, 16}, {0xd5, 16}, {0xd6, 16}, {0xd7, 16},
{0xd8, 16}, {0xd9, 16}, {0xda, 16}, {0xe1, 16}, {0xe2, 16}, {0xe3, 16},
{0xe4, 16}, {0xe5, 16}, {0xe6, 16}, {0xe7, 16}, {0xe8, 16}, {0xe9, 16},
{0xea, 16}, {0xf0, 11}, {0xf1, 16}, {0xf2, 16}, {0xf3, 16}, {0xf4, 16},
{0xf5, 16}, {0xf6, 16}, {0xf7, 16}, {0xf8, 16}, {0xf9, 16}, {0xfa, 16}
};
/* *INDENT-ON* */
/* Table K.6 - Table for chrominance AC coefficients */
/* *INDENT-OFF* */
static const GstJpegHuffmanTableEntry default_chrominance_ac_table[] = {
{0x00, 2}, {0x01, 2}, {0x02, 3}, {0x03, 4}, {0x04, 5}, {0x05, 5},
{0x06, 6}, {0x07, 7}, {0x08, 9}, {0x09, 10}, {0x0a, 12}, {0x11, 4},
{0x12, 6}, {0x13, 8}, {0x14, 9}, {0x15, 11}, {0x16, 12}, {0x17, 16},
{0x18, 16}, {0x19, 16}, {0x1a, 16}, {0x21, 5}, {0x22, 8}, {0x23, 10},
{0x24, 12}, {0x25, 15}, {0x26, 16}, {0x27, 16}, {0x28, 16}, {0x29, 16},
{0x2a, 16}, {0x31, 5}, {0x32, 8}, {0x33, 10}, {0x34, 12}, {0x35, 16},
{0x36, 16}, {0x37, 16}, {0x38, 16}, {0x39, 16}, {0x3a, 16}, {0x41, 6},
{0x42, 9}, {0x43, 16}, {0x44, 16}, {0x45, 16}, {0x46, 16}, {0x47, 16},
{0x48, 16}, {0x49, 16}, {0x4a, 16}, {0x51, 6}, {0x52, 10}, {0x53, 16},
{0x54, 16}, {0x55, 16}, {0x56, 16}, {0x57, 16}, {0x58, 16}, {0x59, 16},
{0x5a, 16}, {0x61, 7}, {0x62, 11}, {0x63, 16}, {0x64, 16}, {0x65, 16},
{0x66, 16}, {0x67, 16}, {0x68, 16}, {0x69, 16}, {0x6a, 16}, {0x71, 7},
{0x72, 11}, {0x73, 16}, {0x74, 16}, {0x75, 16}, {0x76, 16}, {0x77, 16},
{0x78, 16}, {0x79, 16}, {0x7a, 16}, {0x81, 8}, {0x82, 16}, {0x83, 16},
{0x84, 16}, {0x85, 16}, {0x86, 16}, {0x87, 16}, {0x88, 16}, {0x89, 16},
{0x8a, 16}, {0x91, 9}, {0x92, 16}, {0x93, 16}, {0x94, 16}, {0x95, 16},
{0x96, 16}, {0x97, 16}, {0x98, 16}, {0x99, 16}, {0x9a, 16}, {0xa1, 9},
{0xa2, 16}, {0xa3, 16}, {0xa4, 16}, {0xa5, 16}, {0xa6, 16}, {0xa7, 16},
{0xa8, 16}, {0xa9, 16}, {0xaa, 16}, {0xb1, 9}, {0xb2, 16}, {0xb3, 16},
{0xb4, 16}, {0xb5, 16}, {0xb6, 16}, {0xb7, 16}, {0xb8, 16}, {0xb9, 16},
{0xba, 16}, {0xc1, 9}, {0xc2, 16}, {0xc3, 16}, {0xc4, 16}, {0xc5, 16},
{0xc6, 16}, {0xc7, 16}, {0xc8, 16}, {0xc9, 16}, {0xca, 16}, {0xd1, 11},
{0xd2, 16}, {0xd3, 16}, {0xd4, 16}, {0xd5, 16}, {0xd6, 16}, {0xd7, 16},
{0xd8, 16}, {0xd9, 16}, {0xda, 16}, {0xe1, 14}, {0xe2, 16}, {0xe3, 16},
{0xe4, 16}, {0xe5, 16}, {0xe6, 16}, {0xe7, 16}, {0xe8, 16}, {0xe9, 16},
{0xea, 16}, {0xf0, 10}, {0xf1, 15}, {0xf2, 16}, {0xf3, 16}, {0xf4, 16},
{0xf5, 16}, {0xf6, 16}, {0xf7, 16}, {0xf8, 16}, {0xf9, 16}, {0xfa, 16}
};
/* *INDENT-ON* */
static inline gboolean
jpeg_parse_to_next_marker (GstByteReader * br, guint8 * marker)
{
gint ofs;
ofs = gst_jpeg_scan_for_marker_code (br->data, br->size, br->byte);
if (ofs < 0)
return FALSE;
if (marker)
*marker = br->data[ofs + 1];
gst_byte_reader_skip (br, ofs - br->byte + 2);
return TRUE;
}
gint
gst_jpeg_scan_for_marker_code (const guint8 * data, gsize size, guint offset)
{
guint i;
g_return_val_if_fail (data != NULL, -1);
g_return_val_if_fail (size > offset, -1);
for (i = offset; i < size - 1;) {
if (data[i] != 0xff)
i++;
else {
const guint8 v = data[i + 1];
if (v >= 0xc0 && v <= 0xfe)
return i;
i += 2;
}
}
return -1;
}
gboolean
gst_jpeg_parse_frame_hdr (GstJpegFrameHdr * frame_hdr,
const guint8 * data, gsize size, guint offset)
{
GstByteReader br;
guint16 length;
guint8 val;
guint i;
g_return_val_if_fail (frame_hdr != NULL, FALSE);
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size > offset, FALSE);
size -= offset;
gst_byte_reader_init (&br, &data[offset], size);
g_return_val_if_fail (size >= 8, FALSE);
U_READ_UINT16 (&br, length); /* Lf */
g_return_val_if_fail (size >= length, FALSE);
U_READ_UINT8 (&br, frame_hdr->sample_precision);
U_READ_UINT16 (&br, frame_hdr->height);
U_READ_UINT16 (&br, frame_hdr->width);
U_READ_UINT8 (&br, frame_hdr->num_components);
g_return_val_if_fail (frame_hdr->num_components <=
GST_JPEG_MAX_SCAN_COMPONENTS, FALSE);
length -= 8;
g_return_val_if_fail (length >= 3 * frame_hdr->num_components, FALSE);
for (i = 0; i < frame_hdr->num_components; i++) {
U_READ_UINT8 (&br, frame_hdr->components[i].identifier);
U_READ_UINT8 (&br, val);
frame_hdr->components[i].horizontal_factor = (val >> 4) & 0x0F;
frame_hdr->components[i].vertical_factor = (val & 0x0F);
U_READ_UINT8 (&br, frame_hdr->components[i].quant_table_selector);
g_return_val_if_fail ((frame_hdr->components[i].horizontal_factor <= 4 &&
frame_hdr->components[i].vertical_factor <= 4 &&
frame_hdr->components[i].quant_table_selector < 4), FALSE);
length -= 3;
}
g_assert (length == 0);
return TRUE;
}
gboolean
gst_jpeg_parse_scan_hdr (GstJpegScanHdr * scan_hdr,
const guint8 * data, gsize size, guint offset)
{
GstByteReader br;
guint16 length;
guint8 val;
guint i;
g_return_val_if_fail (scan_hdr != NULL, FALSE);
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size > offset, FALSE);
size -= offset;
gst_byte_reader_init (&br, &data[offset], size);
g_return_val_if_fail (size >= 3, FALSE);
U_READ_UINT16 (&br, length); /* Ls */
g_return_val_if_fail (size >= length, FALSE);
U_READ_UINT8 (&br, scan_hdr->num_components);
g_return_val_if_fail (scan_hdr->num_components <=
GST_JPEG_MAX_SCAN_COMPONENTS, FALSE);
length -= 3;
g_return_val_if_fail (length >= 2 * scan_hdr->num_components, FALSE);
for (i = 0; i < scan_hdr->num_components; i++) {
U_READ_UINT8 (&br, scan_hdr->components[i].component_selector);
U_READ_UINT8 (&br, val);
scan_hdr->components[i].dc_selector = (val >> 4) & 0x0F;
scan_hdr->components[i].ac_selector = val & 0x0F;
g_return_val_if_fail ((scan_hdr->components[i].dc_selector < 4 &&
scan_hdr->components[i].ac_selector < 4), FALSE);
length -= 2;
}
/* FIXME: Ss, Se, Ah, Al */
g_assert (length == 3);
return TRUE;
}
gboolean
gst_jpeg_parse_huffman_table (GstJpegHuffmanTables * huf_tables,
const guint8 * data, gsize size, guint offset)
{
GstByteReader br;
GstJpegHuffmanTable *huf_table;
guint16 length;
guint8 val, table_class, table_index;
guint32 value_count;
guint i;
g_return_val_if_fail (huf_tables != NULL, FALSE);
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size > offset, FALSE);
size -= offset;
gst_byte_reader_init (&br, &data[offset], size);
g_return_val_if_fail (size >= 2, FALSE);
U_READ_UINT16 (&br, length); /* Lh */
g_return_val_if_fail (size >= length, FALSE);
while (gst_byte_reader_get_remaining (&br)) {
U_READ_UINT8 (&br, val);
table_class = ((val >> 4) & 0x0F);
table_index = (val & 0x0F);
g_return_val_if_fail (table_index < GST_JPEG_MAX_SCAN_COMPONENTS, FALSE);
if (table_class == 0) {
huf_table = &huf_tables->dc_tables[table_index];
} else {
huf_table = &huf_tables->ac_tables[table_index];
}
READ_BYTES (&br, huf_table->huf_bits, 16);
value_count = 0;
for (i = 0; i < 16; i++)
value_count += huf_table->huf_bits[i];
READ_BYTES (&br, huf_table->huf_values, value_count);
huf_table->valid = TRUE;
}
return TRUE;
failed:
return FALSE;
}
gboolean
gst_jpeg_parse_quant_table (GstJpegQuantTables * quant_tables,
const guint8 * data, gsize size, guint offset)
{
GstByteReader br;
GstJpegQuantTable *quant_table;
guint16 length;
guint8 val, table_index;
guint i;
g_return_val_if_fail (quant_tables != NULL, FALSE);
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size > offset, FALSE);
size -= offset;
gst_byte_reader_init (&br, &data[offset], size);
g_return_val_if_fail (size >= 2, FALSE);
U_READ_UINT16 (&br, length); /* Lq */
g_return_val_if_fail (size >= length, FALSE);
while (gst_byte_reader_get_remaining (&br)) {
U_READ_UINT8 (&br, val);
table_index = (val & 0x0f);
g_return_val_if_fail (table_index < GST_JPEG_MAX_SCAN_COMPONENTS, FALSE);
quant_table = &quant_tables->quant_tables[table_index];
quant_table->quant_precision = ((val >> 4) & 0x0f);
g_return_val_if_fail (gst_byte_reader_get_remaining (&br) >=
GST_JPEG_MAX_QUANT_ELEMENTS * (1 + ! !quant_table->quant_precision),
FALSE);
for (i = 0; i < GST_JPEG_MAX_QUANT_ELEMENTS; i++) {
if (!quant_table->quant_precision) { /* 8-bit values */
U_READ_UINT8 (&br, val);
quant_table->quant_table[i] = val;
} else { /* 16-bit values */
U_READ_UINT16 (&br, quant_table->quant_table[i]);
}
}
quant_table->valid = TRUE;
}
return TRUE;
}
gboolean
gst_jpeg_parse_restart_interval (guint * interval,
const guint8 * data, gsize size, guint offset)
{
GstByteReader br;
guint16 length, val;
g_return_val_if_fail (interval != NULL, FALSE);
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size > offset, FALSE);
size -= offset;
gst_byte_reader_init (&br, &data[offset], size);
g_return_val_if_fail (size >= 4, FALSE);
U_READ_UINT16 (&br, length); /* Lr */
g_return_val_if_fail (size >= length, FALSE);
U_READ_UINT16 (&br, val);
*interval = val;
return TRUE;
}
static int
compare_huffman_table_entry (const void *a, const void *b)
{
const GstJpegHuffmanTableEntry *const e1 = *(GstJpegHuffmanTableEntry **) a;
const GstJpegHuffmanTableEntry *const e2 = *(GstJpegHuffmanTableEntry **) b;
if (e1->length == e2->length)
return (gint) e1->value - (gint) e2->value;
return (gint) e1->length - (gint) e2->length;
}
static void
build_huffman_table (GstJpegHuffmanTable * huf_table,
const GstJpegHuffmanTableEntry * entries, guint num_entries)
{
const GstJpegHuffmanTableEntry *sorted_entries[256];
guint i, j, n;
g_assert (num_entries <= G_N_ELEMENTS (sorted_entries));
for (i = 0; i < num_entries; i++)
sorted_entries[i] = &entries[i];
qsort (sorted_entries, num_entries, sizeof (sorted_entries[0]),
compare_huffman_table_entry);
for (i = 0, j = 1, n = 0; i < num_entries; i++) {
const GstJpegHuffmanTableEntry *const e = sorted_entries[i];
if (e->length != j) {
huf_table->huf_bits[j++ - 1] = n;
for (; j < e->length; j++)
huf_table->huf_bits[j - 1] = 0;
n = 0;
}
huf_table->huf_values[i] = e->value;
n++;
}
for (; j < G_N_ELEMENTS (huf_table->huf_bits); j++)
huf_table->huf_bits[j] = 0;
for (; i < G_N_ELEMENTS (huf_table->huf_values); i++)
huf_table->huf_values[i] = 0;
huf_table->valid = TRUE;
}
void
gst_jpeg_get_default_huffman_tables (GstJpegHuffmanTables * huf_tables)
{
g_assert (huf_tables);
/* Build DC tables */
build_huffman_table (&huf_tables->dc_tables[0], default_luminance_dc_table,
G_N_ELEMENTS (default_luminance_dc_table));
build_huffman_table (&huf_tables->dc_tables[1], default_chrominance_dc_table,
G_N_ELEMENTS (default_chrominance_dc_table));
memcpy (&huf_tables->dc_tables[2], &huf_tables->dc_tables[1],
sizeof (huf_tables->dc_tables[2]));
/* Build AC tables */
build_huffman_table (&huf_tables->ac_tables[0], default_luminance_ac_table,
G_N_ELEMENTS (default_luminance_ac_table));
build_huffman_table (&huf_tables->ac_tables[1], default_chrominance_ac_table,
G_N_ELEMENTS (default_chrominance_ac_table));
memcpy (&huf_tables->ac_tables[2], &huf_tables->ac_tables[1],
sizeof (huf_tables->ac_tables[2]));
}
static void
build_quant_table (GstJpegQuantTable * quant_table, const guint8 values[64])
{
guint i;
for (i = 0; i < 64; i++)
quant_table->quant_table[i] = values[zigzag_index[i]];
quant_table->quant_precision = 0; /* Pq = 0 (8-bit precision) */
quant_table->valid = TRUE;
}
void
gst_jpeg_get_default_quantization_tables (GstJpegQuantTables * quant_tables)
{
g_assert (quant_tables);
build_quant_table (&quant_tables->quant_tables[0],
default_luminance_quant_table);
build_quant_table (&quant_tables->quant_tables[1],
default_chrominance_quant_table);
build_quant_table (&quant_tables->quant_tables[2],
default_chrominance_quant_table);
}
gboolean
gst_jpeg_parse (GstJpegMarkerSegment * seg,
const guint8 * data, gsize size, guint offset)
{
GstByteReader br;
guint16 length;
g_return_val_if_fail (seg != NULL, FALSE);
if (size <= offset) {
GST_DEBUG ("failed to parse from offset %u, buffer is too small", offset);
return FALSE;
}
size -= offset;
gst_byte_reader_init (&br, &data[offset], size);
if (!jpeg_parse_to_next_marker (&br, &seg->marker)) {
GST_DEBUG ("failed to find marker code");
return FALSE;
}
seg->offset = offset + gst_byte_reader_get_pos (&br);
seg->size = -1;
/* Try to find end of segment */
switch (seg->marker) {
case GST_JPEG_MARKER_SOI:
case GST_JPEG_MARKER_EOI:
fixed_size_segment:
seg->size = 2;
break;
case (GST_JPEG_MARKER_SOF_MIN + 0): /* Lf */
case (GST_JPEG_MARKER_SOF_MIN + 1): /* Lf */
case (GST_JPEG_MARKER_SOF_MIN + 2): /* Lf */
case (GST_JPEG_MARKER_SOF_MIN + 3): /* Lf */
case (GST_JPEG_MARKER_SOF_MIN + 9): /* Lf */
case (GST_JPEG_MARKER_SOF_MIN + 10): /* Lf */
case (GST_JPEG_MARKER_SOF_MIN + 11): /* Lf */
case GST_JPEG_MARKER_SOS: /* Ls */
case GST_JPEG_MARKER_DQT: /* Lq */
case GST_JPEG_MARKER_DHT: /* Lh */
case GST_JPEG_MARKER_DAC: /* La */
case GST_JPEG_MARKER_DRI: /* Lr */
case GST_JPEG_MARKER_COM: /* Lc */
case GST_JPEG_MARKER_DNL: /* Ld */
variable_size_segment:
READ_UINT16 (&br, length);
seg->size = length;
break;
default:
/* Application data segment length (Lp) */
if (seg->marker >= GST_JPEG_MARKER_APP_MIN &&
seg->marker <= GST_JPEG_MARKER_APP_MAX)
goto variable_size_segment;
/* Restart markers (fixed size, two bytes only) */
if (seg->marker >= GST_JPEG_MARKER_RST_MIN &&
seg->marker <= GST_JPEG_MARKER_RST_MAX)
goto fixed_size_segment;
/* Fallback: scan for next marker */
if (!jpeg_parse_to_next_marker (&br, NULL))
goto failed;
seg->size = gst_byte_reader_get_pos (&br) - seg->offset;
break;
}
return TRUE;
failed:
return FALSE;
}

414
gst-libs/gst/codecparsers/gstjpegparser.h Normal file
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@ -0,0 +1,414 @@
/*
* gstjpegparser.h - JPEG parser
*
* Copyright (C) 2011-2012 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef GST_JPEG_PARSER_H
#define GST_JPEG_PARSER_H
#ifndef GST_USE_UNSTABLE_API
# warning "The JPEG parsing library is unstable API and may change in future."
# warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
#endif
#include <gst/gst.h>
G_BEGIN_DECLS
/**
* GST_JPEG_MAX_FRAME_COMPONENTS:
*
* Maximum number of image components in a frame (Nf).
*/
#define GST_JPEG_MAX_FRAME_COMPONENTS 256
/**
* GST_JPEG_MAX_SCAN_COMPONENTS:
*
* Maximum number of image components in a scan (Ns).
*/
#define GST_JPEG_MAX_SCAN_COMPONENTS 4
/**
* GST_JPEG_MAX_QUANT_ELEMENTS:
*
* Number of elements in the quantization table.
*/
#define GST_JPEG_MAX_QUANT_ELEMENTS 64
typedef struct _GstJpegQuantTable GstJpegQuantTable;
typedef struct _GstJpegQuantTables GstJpegQuantTables;
typedef struct _GstJpegHuffmanTable GstJpegHuffmanTable;
typedef struct _GstJpegHuffmanTables GstJpegHuffmanTables;
typedef struct _GstJpegScanComponent GstJpegScanComponent;
typedef struct _GstJpegScanHdr GstJpegScanHdr;
typedef struct _GstJpegFrameComponent GstJpegFrameComponent;
typedef struct _GstJpegFrameHdr GstJpegFrameHdr;
typedef struct _GstJpegMarkerSegment GstJpegMarkerSegment;
/**
* GstJpegMarkerCode:
* @GST_JPEG_MARKER_SOF_MIN: Start of frame min marker code
* @GST_JPEG_MARKER_SOF_MAX: Start of frame max marker code
* @GST_JPEG_MARKER_DHT: Huffman tabler marker code
* @GST_JPEG_MARKER_DAC: Arithmetic coding marker code
* @GST_JPEG_MARKER_RST_MIN: Restart interval min marker code
* @GST_JPEG_MARKER_RST_MAX: Restart interval max marker code
* @GST_JPEG_MARKER_SOI: Start of image marker code
* @GST_JPEG_MARKER_EOI: End of image marker code
* @GST_JPEG_MARKER_SOS: Start of scan marker code
* @GST_JPEG_MARKER_DQT: Define quantization table marker code
* @GST_JPEG_MARKER_DNL: Define number of lines marker code
* @GST_JPEG_MARKER_DRI: Define restart interval marker code
* @GST_JPEG_MARKER_APP_MIN: Application segment min marker code
* @GST_JPEG_MARKER_APP_MAX: Application segment max marker code
* @GST_JPEG_MARKER_COM: Comment marker code
*
* Indicates the type of JPEG segment.
*/
typedef enum {
GST_JPEG_MARKER_SOF_MIN = 0xC0,
GST_JPEG_MARKER_SOF_MAX = 0xCF,
GST_JPEG_MARKER_DHT = 0xC4,
GST_JPEG_MARKER_DAC = 0xCC,
GST_JPEG_MARKER_RST_MIN = 0xD0,
GST_JPEG_MARKER_RST_MAX = 0xD7,
GST_JPEG_MARKER_SOI = 0xD8,
GST_JPEG_MARKER_EOI = 0xD9,
GST_JPEG_MARKER_SOS = 0xDA,
GST_JPEG_MARKER_DQT = 0xDB,
GST_JPEG_MARKER_DNL = 0xDC,
GST_JPEG_MARKER_DRI = 0xDD,
GST_JPEG_MARKER_APP_MIN = 0xE0,
GST_JPEG_MARKER_APP_MAX = 0xEF,
GST_JPEG_MARKER_COM = 0xFE,
} GstJpegMarkerCode;
/**
* GstJpegProfile:
* @GST_JPEG_PROFILE_BASELINE: Baseline DCT
* @GST_JPEG_PROFILE_EXTENDED: Extended sequential DCT
* @GST_JPEG_PROFILE_PROGRESSIVE: Progressive DCT
* @GST_JPEG_PROFILE_LOSSLESS: Lossless (sequential)
*
* JPEG encoding processes.
*/
typedef enum {
GST_JPEG_PROFILE_BASELINE = 0x00,
GST_JPEG_PROFILE_EXTENDED = 0x01,
GST_JPEG_PROFILE_PROGRESSIVE = 0x02,
GST_JPEG_PROFILE_LOSSLESS = 0x03,
} GstJpegProfile;
/**
* GstJpegEntropyCodingMode:
* @GST_JPEG_ENTROPY_CODING_HUFFMAN: Huffman coding
* @GST_JPEG_ENTROPY_CODING_ARITHMETIC: arithmetic coding
*
* JPEG entropy coding mode.
*/
typedef enum {
GST_JPEG_ENTROPY_CODING_HUFFMAN = 0x00,
GST_JPEG_ENTROPY_CODING_ARITHMETIC = 0x08
} GstJpegEntropyCodingMode;
/**
* GstJpegQuantTable:
* @quant_precision: Quantization table element precision (Pq)
* @quant_table: Quantization table elements (Qk)
* @valid: If the quantization table is valid, which means it has
* already been parsed
*
* Quantization table.
*/
struct _GstJpegQuantTable
{
guint8 quant_precision;
guint16 quant_table[GST_JPEG_MAX_QUANT_ELEMENTS];
gboolean valid;
};
/**
* GstJpegQuantTables:
* @quant_tables: All quantization tables
*
* Helper data structure that holds all quantization tables used to
* decode an image.
*/
struct _GstJpegQuantTables
{
GstJpegQuantTable quant_tables[GST_JPEG_MAX_SCAN_COMPONENTS];
};
/**
* GstJpegHuffmanTable:
* @huf_bits: Number of Huffman codes of length i + 1 (Li)
* @huf_vales: Value associated with each Huffman code (Vij)
* @valid: If the Huffman table is valid, which means it has already
* been parsed
*
* Huffman table.
*/
struct _GstJpegHuffmanTable
{
guint8 huf_bits[16];
guint8 huf_values[256];
gboolean valid;
};
/**
* GstJpegHuffmanTables:
* @dc_tables: DC Huffman tables
* @ac_tables: AC Huffman tables
*
* Helper data structure that holds all AC/DC Huffman tables used to
* decode an image.
*/
struct _GstJpegHuffmanTables
{
GstJpegHuffmanTable dc_tables[GST_JPEG_MAX_SCAN_COMPONENTS];
GstJpegHuffmanTable ac_tables[GST_JPEG_MAX_SCAN_COMPONENTS];
};
/**
* GstJpegScanComponent:
* @component_selector: Scan component selector (Csj)
* @dc_selector: DC entropy coding table destination selector (Tdj)
* @ac_selector: AC entropy coding table destination selector (Taj)
* Component-specification parameters.
*/
struct _GstJpegScanComponent
{
guint8 component_selector; /* 0 .. 255 */
guint8 dc_selector; /* 0 .. 3 */
guint8 ac_selector; /* 0 .. 3 */
};
/**
* GstJpegScanHdr:
* @num_components: Number of image components in scan (Ns)
* @components: Image components
*
* Scan header.
*/
struct _GstJpegScanHdr
{
guint8 num_components; /* 1 .. 4 */
GstJpegScanComponent components[GST_JPEG_MAX_SCAN_COMPONENTS];
};
/**
* GstJpegFrameComponent:
* @identifier: Component identifier (Ci)
* @horizontal_factor: Horizontal sampling factor (Hi)
* @vertical_factor: Vertical sampling factor (Vi)
* @quant_table_selector: Quantization table destination selector (Tqi)
*
* Component-specification parameters.
*/
struct _GstJpegFrameComponent
{
guint8 identifier; /* 0 .. 255 */
guint8 horizontal_factor; /* 1 .. 4 */
guint8 vertical_factor; /* 1 .. 4 */
guint8 quant_table_selector; /* 0 .. 3 */
};
/**
* GstJpegFrameHdr:
* @sample_precision: Sample precision (P)
* @height: Number of lines (Y)
* @width: Number of samples per line (X)
* @num_components: Number of image components in frame (Nf)
* @components: Image components
* @restart_interval: Number of MCU in the restart interval (Ri)
*
* Frame header.
*/
struct _GstJpegFrameHdr
{
guint8 sample_precision; /* 2 .. 16 */
guint16 width; /* 1 .. 65535 */
guint16 height; /* 0 .. 65535 */
guint8 num_components; /* 1 .. 255 */
GstJpegFrameComponent components[GST_JPEG_MAX_FRAME_COMPONENTS];
};
/**
* GstJpegMarkerSegment:
* @type: The type of the segment that starts at @offset
* @offset: The offset to the segment start in bytes. This is the
* exact start of the segment, no marker code included
* @size: The size in bytes of the segment, or -1 if the end was not
* found. It is the exact size of the segment, no marker code included
*
* A structure that contains the type of a segment, its offset and its size.
*/
struct _GstJpegMarkerSegment
{
guint8 marker;
guint offset;
gint size;
};
/**
* gst_jpeg_scan_for_marker_code:
* @data: The data to parse
* @size: The size of @data
* @offset: The offset from which to start parsing
*
* Scans the JPEG bitstream contained in @data for the next marker
* code. If found, the function returns an offset to the marker code,
* including the 0xff prefix code but excluding any extra fill bytes.
*
* Returns: offset to the marker code if found, or -1 if not found.
*/
gint gst_jpeg_scan_for_marker_code (const guint8 * data,
gsize size,
guint offset);
/**
* gst_jpeg_parse:
* @data: The data to parse
* @size: The size of @data
* @offset: The offset from which to start parsing
*
* Parses the JPEG bitstream contained in @data, and returns the
* detected segment as a #GstJpegMarkerSegment.
*
* Returns: TRUE if a packet start code was found.
*/
gboolean gst_jpeg_parse (GstJpegMarkerSegment * seg,
const guint8 * data,
gsize size,
guint offset);
/**
* gst_jpeg_parse_frame_hdr:
* @hdr: (out): The #GstJpegFrameHdr structure to fill in
* @data: The data from which to parse the frame header
* @size: The size of @data
* @offset: The offset in bytes from which to start parsing @data
*
* Parses the @hdr JPEG frame header structure members from @data.
*
* Returns: TRUE if the frame header was correctly parsed.
*/
gboolean gst_jpeg_parse_frame_hdr (GstJpegFrameHdr * hdr,
const guint8 * data,
gsize size,
guint offset);
/**
* gst_jpeg_parse_scan_hdr:
* @hdr: (out): The #GstJpegScanHdr structure to fill in
* @data: The data from which to parse the scan header
* @size: The size of @data
* @offset: The offset in bytes from which to start parsing @data
*
* Parses the @hdr JPEG scan header structure members from @data.
*
* Returns: TRUE if the scan header was correctly parsed
*/
gboolean gst_jpeg_parse_scan_hdr (GstJpegScanHdr * hdr,
const guint8 * data,
gsize size,
guint offset);
/**
* gst_jpeg_parse_quantization_table:
* @quant_tables: (out): The #GstJpegQuantizationTable structure to fill in
* @num_quant_tables: The number of allocated quantization tables in @quant_tables
* @data: The data from which to parse the quantization table
* @size: The size of @data
* @offset: The offset in bytes from which to start parsing @data
*
* Parses the JPEG quantization table structure members from @data.
*
* Note: @quant_tables represents the complete set of possible
* quantization tables. However, the parser will only write to the
* quantization table specified by the table destination identifier
* (Tq). While doing so, the @valid flag of the specified quantization
* table will also be set to %TRUE.
*
* Returns: TRUE if the quantization table was correctly parsed.
*/
gboolean gst_jpeg_parse_quant_table (GstJpegQuantTables *quant_tables,
const guint8 * data,
gsize size,
guint offset);
/**
* gst_jpeg_parse_huffman_table:
* @huf_tables: (out): The #GstJpegHuffmanTable structure to fill in
* @data: The data from which to parse the Huffman table
* @size: The size of @data
* @offset: The offset in bytes from which to start parsing @data
*
* Parses the JPEG Huffman table structure members from @data.
*
* Note: @huf_tables represents the complete set of possible Huffman
* tables. However, the parser will only write to the Huffman table
* specified by the table destination identifier (Th). While doing so,
* the @valid flag of the specified Huffman table will also be set to
* %TRUE;
*
* Returns: TRUE if the Huffman table was correctly parsed.
*/
gboolean gst_jpeg_parse_huffman_table (GstJpegHuffmanTables *huf_tables,
const guint8 * data,
gsize size,
guint offset);
/**
* gst_jpeg_parse_restart_interval:
* @interval: (out): The parsed restart interval value
* @data: The data from which to parse the restart interval specification
* @size: The size of @data
* @offset: The offset in bytes from which to start parsing @data
*
* Returns: TRUE if the restart interval value was correctly parsed.
*/
gboolean gst_jpeg_parse_restart_interval (guint * interval,
const guint8 * data,
gsize size,
guint offset);
/**
* gst_jpeg_get_default_huffman_tables:
* @huf_tables: (out): The default DC/AC Huffman tables to fill in
*
* Fills in @huf_tables with the default AC/DC Huffman tables, as
* specified by the JPEG standard.
*/
void gst_jpeg_get_default_huffman_tables (GstJpegHuffmanTables *huf_tables);
/**
* gst_jpeg_get_default_quantization_table:
* @quant_tables: (out): The default luma/chroma quant-tables in zigzag mode
*
* Fills in @quant_tables with the default quantization tables, as
* specified by the JPEG standard.
*/
void gst_jpeg_get_default_quantization_tables (GstJpegQuantTables *quant_tables);
G_END_DECLS
#endif /* GST_JPEG_PARSER_H */