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merge with mainline

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This commit is contained in:
BVK Chaitanya 2010-05-10 12:59:57 +05:30
commit 7361f78ca6
10 changed files with 616 additions and 578 deletions
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108
grub-core/video/readers/jpeg.c
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@ -153,10 +153,11 @@ grub_jpeg_get_number (struct grub_jpeg_data *data, int num)
static int
grub_jpeg_get_huff_code (struct grub_jpeg_data *data, int id)
{
int code, i;
int code;
unsigned i;
code = 0;
for (i = 0; i < 16; i++)
for (i = 0; i < ARRAY_SIZE (data->huff_maxval[id]); i++)
{
code <<= 1;
if (grub_jpeg_get_bit (data))
@ -171,47 +172,51 @@ grub_jpeg_get_huff_code (struct grub_jpeg_data *data, int id)
static grub_err_t
grub_jpeg_decode_huff_table (struct grub_jpeg_data *data)
{
int id, ac, i, n, base, ofs;
int id, ac, n, base, ofs;
grub_uint32_t next_marker;
grub_uint8_t count[16];
unsigned i;
next_marker = data->file->offset;
next_marker += grub_jpeg_get_word (data);
id = grub_jpeg_get_byte (data);
ac = (id >> 4);
id &= 0xF;
if (id > 1)
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"jpeg: too many huffman tables");
if (grub_file_read (data->file, &count, sizeof (count)) !=
sizeof (count))
return grub_errno;
n = 0;
for (i = 0; i < 16; i++)
n += count[i];
id += ac * 2;
data->huff_value[id] = grub_malloc (n);
if (grub_errno)
return grub_errno;
if (grub_file_read (data->file, data->huff_value[id], n) != n)
return grub_errno;
base = 0;
ofs = 0;
for (i = 0; i < 16; i++)
while (data->file->offset + sizeof (count) + 1 <= next_marker)
{
base += count[i];
ofs += count[i];
id = grub_jpeg_get_byte (data);
ac = (id >> 4) & 1;
id &= 0xF;
if (id > 1)
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"jpeg: too many huffman tables");
data->huff_maxval[id][i] = base;
data->huff_offset[id][i] = ofs - base;
if (grub_file_read (data->file, &count, sizeof (count)) !=
sizeof (count))
return grub_errno;
base <<= 1;
n = 0;
for (i = 0; i < ARRAY_SIZE (count); i++)
n += count[i];
id += ac * 2;
data->huff_value[id] = grub_malloc (n);
if (grub_errno)
return grub_errno;
if (grub_file_read (data->file, data->huff_value[id], n) != n)
return grub_errno;
base = 0;
ofs = 0;
for (i = 0; i < ARRAY_SIZE (count); i++)
{
base += count[i];
ofs += count[i];
data->huff_maxval[id][i] = base;
data->huff_offset[id][i] = ofs - base;
base <<= 1;
}
}
if (data->file->offset != next_marker)
@ -229,17 +234,24 @@ grub_jpeg_decode_quan_table (struct grub_jpeg_data *data)
next_marker = data->file->offset;
next_marker += grub_jpeg_get_word (data);
id = grub_jpeg_get_byte (data);
if (id >= 0x10) /* Upper 4-bit is precision. */
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"jpeg: only 8-bit precision is supported");
while (data->file->offset + sizeof (data->quan_table[id]) + 1
<= next_marker)
{
id = grub_jpeg_get_byte (data);
if (id >= 0x10) /* Upper 4-bit is precision. */
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"jpeg: only 8-bit precision is supported");
if (id > 1)
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"jpeg: too many quantization tables");
if (id > 1)
return grub_error (GRUB_ERR_BAD_FILE_TYPE,
"jpeg: too many quantization tables");
if (grub_file_read (data->file, &data->quan_table[id], 64) != 64)
return grub_errno;
if (grub_file_read (data->file, &data->quan_table[id],
sizeof (data->quan_table[id]))
!= sizeof (data->quan_table[id]))
return grub_errno;
}
if (data->file->offset != next_marker)
grub_error (GRUB_ERR_BAD_FILE_TYPE,
@ -444,7 +456,8 @@ grub_jpeg_idct_transform (jpeg_data_unit_t du)
static void
grub_jpeg_decode_du (struct grub_jpeg_data *data, int id, jpeg_data_unit_t du)
{
int pos, h1, h2, qt;
int h1, h2, qt;
unsigned pos;
grub_memset (du, 0, sizeof (jpeg_data_unit_t));
@ -457,7 +470,7 @@ grub_jpeg_decode_du (struct grub_jpeg_data *data, int id, jpeg_data_unit_t du)
du[0] = data->dc_value[id] * (int) data->quan_table[qt][0];
pos = 1;
while (pos < 64)
while (pos < ARRAY_SIZE (data->quan_table[qt]))
{
int num, val;
@ -700,7 +713,7 @@ grub_video_reader_jpeg (struct grub_video_bitmap **bitmap,
#if defined(JPEG_DEBUG)
static grub_err_t
grub_cmd_jpegtest (grub_command_t cmd __attribute__ ((unused)),
int argc, char **args)
int argc, char **args)
{
struct grub_video_bitmap *bitmap = 0;
@ -735,8 +748,7 @@ GRUB_MOD_INIT (jpeg)
grub_video_bitmap_reader_register (&jpeg_reader);
#if defined(JPEG_DEBUG)
cmd = grub_register_command ("jpegtest", grub_cmd_jpegtest,
"FILE",
"Tests loading of JPEG bitmap.");
"FILE", "Tests loading of JPEG bitmap.");
#endif
}