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17 Commits

Author SHA1 Message Date
Martin Storsjö
90c784cc13 rtpdec: Pass the sequence number to depacketizers 
This allows depacketizers to figure out if packets have been lost.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-12-21 14:14:40 +02:00
Diego Biurrun
511cf612ac miscellaneous typo fixes 2012-12-21 00:18:34 +01:00
Anton Khirnov
179a5c37e0 rtpdec: factorize identical code used in several handlers 2012-11-02 07:58:37 +01:00
Martin Storsjö
c3bcd22ed3 rtpdec_jpeg: Error out on other unsupported type values as well 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:10:56 +03:00
Martin Storsjö
1743938df1 rtpdec_jpeg: Disallow using the reserved q values 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:10:45 +03:00
Martin Storsjö
1de9317bd0 rtpdec_jpeg: Fold the default qtables case into an existing if statement 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:10:32 +03:00
Martin Storsjö
a218deb856 rtpdec_jpeg: Store and reuse old qtables for q values 128-254 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:10:05 +03:00
Martin Storsjö
a252649059 rtpdec_jpeg: Simplify the calculation of the number of qtables 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:09:57 +03:00
Martin Storsjö
cbaa9eeda3 rtpdec_jpeg: Add more comments about the fields in the SOF0 section 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:09:30 +03:00
Martin Storsjö
31adff08a1 rtpdec_jpeg: Clarify where the subsampling magic numbers come from 
Write out the numbers the way they are constructed, not just the
final values.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:09:21 +03:00
Martin Storsjö
c64d2a63df rtpdec_jpeg: Don't use a bitstream writer for the EOI marker 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:09:02 +03:00
Martin Storsjö
20f325f320 rtpdec_jpeg: Don't needlessly use a bitstream writer for the header 
Everything written with this bitstream writer is 8/16 bit units
(except for a pair of 4 bit values), so using a bitstream writer
isn't necessary.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:08:33 +03:00
Martin Storsjö
43957fcc71 rtpdec_jpeg: Simplify writing of the jpeg header 
Generalize writing of any number of qtables. Don't manually write
16 bit values in two separate calls.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:08:09 +03:00
Martin Storsjö
932d8300d3 rtpdec_jpeg: Merge two if statements 
This makes the code more readable and robust.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:07:57 +03:00
Martin Storsjö
7ef4323405 rtpdec_jpeg: Write the DHT section properly 
Currently the size header of the generated DHT section is
incorrect, making the mjpeg decoder just skip it. Since the
written huffman tables are the default ones, this failure had
gone undetected.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-12 12:07:29 +03:00
Samuel Pitoiset
55e778bebd rtpdec_jpeg: Add support for default quantizers 
Generate quantization tables when they are not present in the
first chunk.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-11 11:53:08 +03:00
Samuel Pitoiset
3c19815416 rtp: Depacketization of JPEG (RFC 2435) 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-09 22:22:21 +03:00