Use AV_PIX_FMT_FLAG_ALPHA for detecting transparency where nb_components was used
Temporarily keep the old method for ffmpeg_filters.c choose_pix_fmt and
avfiltergraph.c pick_format() until a paletted pixel format without alpha is
introduced.
avcodec/wavpack: Fix integer overflow in DEC_MED() / INC_MED()
Fixes: runtime error: signed integer overflow: 2147483637 + 128 cannot be represented in type 'int' Fixes: 6701/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVPACK_fuzzer-5358324934508544 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
avcodec/wavpack: Fix integer overflow in wv_unpack_stereo()
Fixes: runtime error: signed integer overflow: 2147483531 + 16384 cannot be represented in type 'int' Fixes: 6615/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVPACK_fuzzer-5165715515506688 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
In vc1_decode_i_blocks_adv mquant needs to be reset to its default value for
each macroblock, instead of once at the beginning of the slice.
DQPROFILE specifies which macroblocks can have an alternative quantizer step
size. When DQPROFILE specifies edges, the selection is applicable to the edges
of the picture. Slice edges are not selected by DQPROFILE.
Signed-off-by: Jerome Borsboom <jerome.borsboom@carpalis.nl> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
avformat/mpegts: set AV_DISPOSITION_DESCRIPTIONS for OIPF cases
1. an audio component with an ISO_639_language_descriptor in the PMT with the
audio_type field set to 0x03
2. a supplementary_audio_descriptor with the editorial_classification field set
to 0x01
3. an ac-3_descriptor or an enhanced_ac-3_descriptor with a component_type field
with the service_type flags set to Visually Impaired
Tested-by: Łukasz Krzciuk <lkrzciuk@vewd.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
James Almer [Wed, 25 Apr 2018 22:27:04 +0000 (19:27 -0300)]
avcodec/cbs: create reference counted fragments in ff_cbs_read_extradata()
This way, every CodedBitstreamType->split_fragment() function can
safely assume the fragment passed to them will be reference counted,
potentially simplifying code.
Reviewed-by: Mark Thompson <sw@jkqxz.net> Signed-off-by: James Almer <jamrial@gmail.com>
Carl Eugen Hoyos [Sun, 15 Apr 2018 22:14:24 +0000 (00:14 +0200)]
lavf/rtmpcrypt: Add a cast to silence an unavoidable warning.
The av_rc4_crypt() documentation allows src == dst.
Silences the following warning:
libavformat/rtmpcrypt.c:304:36: warning: passing argument 2 of 'av_rc4_crypt' discards 'const' qualifier from pointer target type
avformat/dashenc: Set mp4 as the default format for VP9
There is a separate muxer(webmdashenc.c) for supporting VP9+webm output in DASH.
Hence in this muxer we will focus on supporting VP9 in MP4
Have verified playout support of VP9+MP4 in Chrome and Firefox.
avcodec/error_resilience: Fix integer overflow in filter181()
Fixes: runtime error: signed integer overflow: 197710 * 10923 cannot be represented in type 'int' Fixes: 7010/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-5667127596941312 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
avcodec/vc1: more corrections for AC inverse quantization scaling
HALFQP should only be added to the inverse quantizer when the block is
coded with PQUANT. When PQUANT is equal to ALTPQUANT, the original test
for the addition of HALFQP fails. A negative value for mquant indicates
that the value was derived from VOPDQUANT.
avcodec/vc1: add overlap smooting and loop filter for frame/field-interlace
Add previously omitted overlap smooting and loop filtering for
frame/field-interlace pictures. For progressive pictures switch to the
re-implemented versions of overlap smooting and loop filtering.
The existing implementation only used vc1_put_signed_blocks_clamped for I and
BI frames. This rewritten version is also applicable to P frame both
progressive and frame/field-interlace.
The existing implementation did out-of-bounds reference pixel replication for
progressive reference frames. In interlaced reference frames both the even and
odd line on the horizontal edges need to be replicated.
avcodec/vc1: store color-difference reference field type
The loop filter for P interlace field pictures needs the reference field type.
For luma, the reference field type was already available. Store the reference
field type for color-difference as well.
avcodec/vc1: re-implement and expand VC-1 loop filtering
The existing implementation did loop filtering for progressive
frames only. This rewritten version implements loop filtering for
all applicable frame types for both progessive and
frame/field-interlace.
avcodec/vc1: change to using v->block instead of s->block for P frames
The new overlap smooting filter smoothes image pixels stored in v->block.
Switch to v->block instead of s->block for storing decoded image pixels for P
frames. Additionally, we must take incrementing *_blk_idx out of the
vc1_put_signed_blocks_clamped function.
avcodec/vc1: re-implement and expand VC-1 overlap smoothing
The existing implementation did overlap smoothing for progressive
frames only. This rewritten version implements overlap smoothing
for all applicable frame types for both progessive and
frame/field-interlace.
Aman Gupta [Tue, 24 Apr 2018 02:21:19 +0000 (19:21 -0700)]
avcodec/mediacodecdec: clarify delay_flush specific code
As of 2a0eb8685, ff_mediacodec_dec_is_flushing() only returns
true in delay_flush mode. Make this more obvious by adding
delay_flush to the if statement.
Signed-off-by: Matthieu Bouron <matthieu.bouron@gmail.com> Signed-off-by: Aman Gupta <aman@tmm1.net>
Jerome Borsboom [Thu, 29 Mar 2018 11:43:34 +0000 (13:43 +0200)]
avcodec/vaapi: do not parse MVMODE for VC-1 interlaced frame pictures
Interlaced frame pictures do not contain the MVMODE or MVMODE2 bitstream
element. Trying to parse this element and passing a nonzero value to the
hardware decoder results in small inaccuracies in the decoded picture.
projects / ffmpeg / log