Commit graph

12 commits

Author SHA1 Message Date
Gwenole Beauchesne
c4ccc0a74b codecparsers: jpeg: add missing includes. 2012-09-12 10:40:06 +02:00
Gwenole Beauchesne
0b3d75f14b jpeg: fix default quantization tables.
Two elements in the luminance quantization table were wrong. So,
gst_jpeg_get_default_quantization_tables() now reconstructs tables
in zig-zag order from the standard ones (Tables K.1 and K.2).
2012-08-02 18:27:48 +02:00
Gwenole Beauchesne
f88323857d jpeg: compute default Huffman tables.
... instead of having them pre-calculated. This saves around 1.5 KB
of data in the DSO but requires gst_jpeg_get_default_huffman_tables()
to do more work. Though, the client application may have to call that
function at most once, only.
2012-08-02 15:17:57 +02:00
Gwenole Beauchesne
fbb9a5e1c0 jpeg: fix make dist. 2012-07-19 13:57:05 +02:00
Gwenole Beauchesne
8f93bbc937 codecparsers: jpeg: tweak parser API.
... to allow for more consistent parsing API among various codec parsers.
In particular, drop use of GList.
2012-07-17 18:02:16 +02:00
Gwenole Beauchesne
326a229636 codecparsers: jpeg: track valid quantization and Huffman tables.
Add valid flag to GstJpegQuantTable and GstJpegHuffmanTable so that
to determine whether a table actually changed since the last user
synchronization point. That way, this makes it possible for some
hardware accelerated decoding solution to upload only those tables
that changed.
2012-06-21 16:06:47 +02:00
Wind Yuan
e61f4c4445 codecparsers: jpeg: use U_READ_UINT*() wherever possible.
Use GstByteReader *_unchecked() variants as much as possible.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2012-06-21 15:30:54 +02:00
Wind Yuan
90e6532fd3 jpeg: add new GstJpegHuffmanTables structure.
Add new GstJpegHuffmanTables helper structure to hold all possible
AC/DC Huffman tables available to all components.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2012-06-21 15:30:54 +02:00
Wind Yuan
4c5cc7eff9 jpeg: make gst_jpeg_parse() support multiple scans.
gst_jpeg_parse() now gathers all scans available in the supplied
buffer. A scan comprises of the scan header and any entropy-coded
segments or restart marker following it. The size and offset to
the associated data (ECS + RST segments) are append to a new
GstJpegScanOffsetSize structure.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2012-06-21 15:30:53 +02:00
Wind Yuan
53cbdcc1e6 jpeg: update to match latest parser API.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2012-05-15 18:25:03 +02:00
Gwenole Beauchesne
0cf06cdbcb jpeg: simplify and optimize parser API. 2012-05-15 16:08:44 +02:00
Wind Yuan
c350a0809d codecparsers: add JPEG parser.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2012-04-11 19:38:12 +02:00