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hxxx_helper is a H264/HEVC helper used by mediacodec and videtoolbox. For
mediacodec, it's used to convert (and validate) xvcC to AnnexB or used to
detect SPS/PPS change when decoding AnnexB. For videotoolbox, it's used to
validate avcC or to convert AnnexB to avcC (and detect SPS/PPS change) when
decoding AnnexB.

Merge StartVideoToolbox with StartVideoToolboxSession, and merge
StopVideoToolbox with StopVideoToolboxSession.

Split decoder extra configuration from StartVideoToolbox.

We don't have to force output chroma on any platforms (let the system decide
for the best chroma).

Felix Paul Kühne authored Sep 22, 2016 and Thomas Guillem committed Feb 16, 2017

Signed-off-by: Thomas Guillem <thomas@gllm.fr>

This replaces the decoder_RequestReload() function. The module implementation
that returns this status should not have modified or released the input block
passed in pf_decoder parameter.

This replaces the decoder_t->b_error boolean.

For now, only decoders that were setting b_error return VLCDEC_ECRITICAL, but a
lot more decoders should use this value since critical errors are often ignored.

Use only one callback for every decoder types:

int (*pf_decode)(decoder_t *, block_t *p_block);

There is now only one way to send output frames/blocks from a decoder module:
using decoder_QueueVideo(), decoder_QueueAudio() and decoder_QueueSub()
functions.

This fixes transcoding not receiving any output when a decoder used
decoder_Queue*() function.

The pf_packetize callback is kept unchanged. A packetizer shouldn't be
asynchronous at all (and this simplify the locking for decoder core).

The pf_decode callback returns, for now, only one value: SUCCESS. This will
allow a module to send more status.

Ref #17971

This adds explicit casts where needed

Remove the videotoolbox-zero-copy variable since direct rendering is always
enabled.

Map the CVPX pixel format to a VLC fourcc, this buffer will be renderered by
the OpenGL vout with the cvpx converter (mapping an IOSurface to an OpenGL
texture).

On Macos, the destination pixel format shouldn't set touched at all to let the
decoder output frames in its native format (and don't do any color conversion).
This need to be tested on iOS (hence the #ifdef).

Since it's always mapped/converted as a NV12 buffer.

This case can't happen

ref #17855

Fix #16048

There was a leak in case the decoding didn't start.

Use the new decoder_QueuePicture() call to queue pictures directly from the
VideoToolBox render callback.

Replace the NSMutableDictionary/NSMutableArray frame reordering by using a
linked list of picture_t.

b_started was set to false before Flush() from RestartVideoToolbox(). Now that
these objects are always valid, we can clean-up without checking the state.

outputTimeStamps and outputFrames need to be locked together.

This path is totally reachable when h264 is not avcC.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Thomas Guillem authored Nov 21, 2016 and Jean-Baptiste Kempf committed Nov 21, 2016

This fixes a regression from 47467b96

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

maxime.chapelet.giroptic authored Oct 20, 2016 and François Cartegnie committed Oct 20, 2016

Signed-off-by: Francois Cartegnie <fcvlcdev@free.fr>