8 Commits

Author SHA1 Message Date
deadbeef
37f5ecfd8f Replace NULL with nullptr or null in webrtc/base/.
BUG=webrtc:7147

Review-Url: https://codereview.webrtc.org/2718663005
Cr-Commit-Position: refs/heads/master@{#16878}
2017-02-27 22:06:41 +00:00
kwiberg
af476c737f RTC_[D]CHECK_op: Remove "u" suffix on integer constants
There's no longer any need to make the two arguments have the same
signedness, so we can drop the "u" suffix on literal integer
arguments.

NOPRESUBMIT=true
BUG=webrtc:6645

Review-Url: https://codereview.webrtc.org/2535593002
Cr-Commit-Position: refs/heads/master@{#15280}
2016-11-28 23:21:51 +00:00
sprang
52033d6ea1 Add H264 bitstream rewriting to limit frame reordering marker in header
The VUI part an SPS may specify max_num_reorder_frames and
max_dec_frame_buffering. These may cause a decoder to buffer a number
of frame prior allowing decode, leading to delays, even if no frames
using such references (ie B-frames) are sent.

Because of this we update any SPS block emitted by the encoder.

Also, a bunch of refactoring of H264-related code to reduce code
duplication.

BUG=

Review-Url: https://codereview.webrtc.org/1979443004
Cr-Commit-Position: refs/heads/master@{#13010}
2016-06-02 09:43:38 +00:00
Peter Boström
8c266e6baf H264 bitstream parser.
Parsing the encoded bitstream is required for doing downscaling
decisions based on average encoded QP to improve perceived quality.

BUG=webrtc:4968
R=noahric@chromium.org, stefan@webrtc.org
TBR=pthatcher@webrtc.org

Review URL: https://codereview.webrtc.org/1314473008 .

Cr-Commit-Position: refs/heads/master@{#10051}
2015-09-24 13:07:04 +00:00
henrikg
91d6edef35 Add RTC_ prefix to (D)CHECKs and related macros.
We must remove dependency on Chromium, i.e. we can't use Chromium's base/logging.h. That means we need to define these macros in WebRTC also when doing Chromium builds. And this causes redefinition.

Alternative solutions:
* Check if we already have defined e.g. CHECK, and don't define them in that case. This makes us depend on include order in Chromium, which is not acceptable.
* Don't allow using the macros in WebRTC headers. Error prone since if someone adds it there by mistake it may compile fine, but later break if a header in added or order is changed in Chromium. That will be confusing and hard to enforce.
* Ensure that headers that are included by an embedder don't include our macros. This would require some heavy refactoring to be maintainable and enforcable.
* Changes in Chromium for this is obviously not an option.

BUG=chromium:468375
NOTRY=true

Review URL: https://codereview.webrtc.org/1335923002

Cr-Commit-Position: refs/heads/master@{#9964}
2015-09-17 07:24:51 +00:00
Noah Richards
9b9f1c4562 Remove basictypes.h dependency from bitbuffer.
This reduces the types exported in webrtc proper, which can cause other
issues (since it doesn't generally use webrtc/base/basictypes.h).
basictypes.h integral types (e.g. uint8) have been replaced by the
stdint counterparts (e.g. uint8_t), which matches general webrtc style.

The include for common.h has been replaced by constructormagic.h, which
was the only part used.

BUG=
R=pthatcher@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/50859004

Cr-Commit-Position: refs/heads/master@{#9181}
2015-05-12 19:20:44 +00:00
Noah Richards
86153c26a0 Added a BitBufferWriter subclass that contains methods for writing bit and byte-sized data, along with exponential golomb encoded data.
This pattern (read-only base, writable subclass) was picked to maintain a *Buffer option that doesn't copy the source bits when parsing. ByteBuffer and Buffer both copy. I'm open to discussion on what the type relationship would be, though :)

Tests have been added to ensure the symmetric nature of read/write operations.

BUG=
R=bcornell@google.com, pthatcher@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/45259005

Cr-Commit-Position: refs/heads/master@{#9107}
2015-04-28 22:13:50 +00:00
Noah Richards
bbf7c864ad Add a new BitBuffer class to webrtc base.
Provides a read-only interface for reading byte and bit-sized data from
an underlying buffer in network/big-endian order. Also provides a method
for reading exponential golomb encoded values, which will be useful in
H.264 packet parsing (separate CL).

BUG=
R=pthatcher@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/49719004

Cr-Commit-Position: refs/heads/master@{#9046}
2015-04-21 23:29:53 +00:00