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181 Commits

Author SHA1 Message Date
Paul B Mahol
8a7295beeb tiff: frame multithreading support 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2013-08-13 19:29:10 +00:00
Thilo Borgmann
b7ba7cbd6e avcodec/tiff: Refactor TIFF tag related functions to share the code. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-13 00:30:02 +02:00
Michael Niedermayer
61e0e80999 tiff: continue parsing on non fatal errors 
Reviewed-by: Thilo Borgmann <thilo.borgmann@mail.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-11 18:11:36 +02:00
Michael Niedermayer
200170e8c0 avcodec/tiff: remove redundant check 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-09 14:58:07 +02:00
Michael Niedermayer
a9553e8f37 avcodec/tiff: avoid seek back on reading tags 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-09 14:53:13 +02:00
Michael Niedermayer
d0b27eab92 Merge commit '9c2216976907336dfae0e8e38a4d70ca2465a92c' 
* commit '9c2216976907336dfae0e8e38a4d70ca2465a92c':
  tiff: do not overread the source buffer

Conflicts:
	libavcodec/tiff.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-08 12:21:14 +02:00
Michael Niedermayer
dc318505d0 Merge commit '999ccd2d0a43640921088578f138c874f6cc0f8a' 
* commit '999ccd2d0a43640921088578f138c874f6cc0f8a':
  tiff: cleanup the error paths

Conflicts:
	libavcodec/tiff.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-08 11:41:58 +02:00
Michael Niedermayer
1fec361f35 Merge commit '016c5b066de08a93a5f6b5beb0ef377356b35cde' 
* commit '016c5b066de08a93a5f6b5beb0ef377356b35cde':
  tiff: refactor fax support in a separate function

Conflicts:
	libavcodec/tiff.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-08 11:32:34 +02:00
Michael Niedermayer
a804632b15 Merge commit '103937681d7e6afd3e8caf8937272575e450fb55' 
* commit '103937681d7e6afd3e8caf8937272575e450fb55':
  tiff: refactor deflate support in a separate function

Conflicts:
	libavcodec/tiff.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-08 11:23:49 +02:00
Luca Barbato
9c22169769 tiff: do not overread the source buffer 
At least 2 bytes from the source are read every loop.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
 2013-06-07 17:23:53 +02:00
Luca Barbato
999ccd2d0a tiff: cleanup the error paths 
Return the proper error values and optionally report them.
 2013-06-07 17:23:53 +02:00
Luca Barbato
016c5b066d tiff: refactor fax support in a separate function 2013-06-07 17:23:53 +02:00
Luca Barbato
103937681d tiff: refactor deflate support in a separate function 
Report when zlib support is missing.
 2013-06-07 17:23:53 +02:00
Paul B Mahol
86005184e3 tiff: simplify picking right pixel format 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2013-06-06 21:42:02 +00:00
Paul B Mahol
8cc8adaa88 tiff: correctly decode saparate planes with horizontal differencing predictor 
Closes #2648.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2013-06-06 19:47:46 +00:00
Michael Niedermayer
bbae652113 tiff: fix memleak 
Fixes CID1026764
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-03 14:59:52 +02:00
Michael Niedermayer
7cb5467a52 Merge commit '46ce9ded96ffcb798b03da894cdb5fdac376a6ee' 
* commit '46ce9ded96ffcb798b03da894cdb5fdac376a6ee':
  tiff: K&R formatting cosmetics

Conflicts:
	libavcodec/tiff.c
	libavcodec/tiff.h
	libavcodec/tiffenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-03 11:44:11 +02:00
Diego Biurrun
46ce9ded96 tiff: K&R formatting cosmetics 2013-06-02 17:59:34 +02:00
Carl Eugen Hoyos
a4b5863eea Fix compilation of libavcodec/tiff.c 2013-06-02 16:50:39 +02:00
Paul B Mahol
379ad9788b tiff: planar rgb 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2013-06-02 14:22:40 +00:00
Paul B Mahol
7984ed87c1 tiff: support inverted fill_order for packbits compression 
Fixes #1995.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2013-05-29 13:43:03 +00:00
Paul B Mahol
30d7dcce4c tiff: add helper function for fill_order case 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2013-05-29 13:42:55 +00:00
Hendrik Leppkes
edcc51fb8e tiff: fix handling of metadata with refcounted frames 
Since the conversion to refcounted frames, the tiff decoder
only wrote the metadata into its internal "picture" in its own context,
never exposing the metadata to the user, and eventually leaking the
metadata.

Instead, properly store the metadata directly into the frame being decoded into.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-03-13 22:13:59 +01:00
Clément Bœsch
1ec94b0f06 lavc: factorize ff_{thread_,re,}get_buffer error messages. 
Coccinelle profile used:

  @@
  expression r, ctx, f, loglevel, str, flags;
  @@

  -if ((r = ff_get_buffer(ctx, f, flags)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_get_buffer(ctx, f, flags)) < 0)
  +    return r;

  @@
  expression r, ctx, f, loglevel, str;
  @@

  -if ((r = ff_reget_buffer(ctx, f)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_reget_buffer(ctx, f)) < 0)
  +    return r;

  @@
  expression r, ctx, f, loglevel, str, flags;
  @@

  -if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) {
  -    av_log(ctx, loglevel, str);
  -    return r;
  -}
  +if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0)
  +    return r;

...along with some manual patches for the remaining ones.
 2013-03-13 19:00:10 +01:00
Michael Niedermayer
80e9e63c94 Merge commit '759001c534287a96dc96d1e274665feb7059145d' 
* commit '759001c534287a96dc96d1e274665feb7059145d':
  lavc decoders: work with refcounted frames.

Anton Khirnov (1):
      lavc decoders: work with refcounted frames.

Clément Bœsch (47):
      lavc/ansi: reset file
      lavc/ansi: re-do refcounted frame changes from Anton
      fraps: reset file
      lavc/fraps: switch to refcounted frames
      gifdec: reset file
      lavc/gifdec: switch to refcounted frames
      dsicinav: resolve conflicts
      smc: resolve conflicts
      zmbv: resolve conflicts
      rpza: resolve conflicts
      vble: resolve conflicts
      xxan: resolve conflicts
      targa: resolve conflicts
      vmnc: resolve conflicts
      utvideodec: resolve conflicts
      tscc: resolve conflicts
      ulti: resolve conflicts
      ffv1dec: resolve conflicts
      dnxhddec: resolve conflicts
      v210dec: resolve conflicts
      vp3: resolve conflicts
      vcr1: resolve conflicts
      v210x: resolve conflicts
      wavpack: resolve conflicts
      pngdec: fix compilation
      roqvideodec: resolve conflicts
      pictordec: resolve conflicts
      mdec: resolve conflicts
      tiertexseqv: resolve conflicts
      smacker: resolve conflicts
      vb: resolve conflicts
      vqavideo: resolve conflicts
      xl: resolve conflicts
      tmv: resolve conflicts
      vmdav: resolve conflicts
      truemotion1: resolve conflicts
      truemotion2: resolve conflicts
      lcldec: fix compilation
      libcelt_dec: fix compilation
      qdrw: fix compilation
      r210dec: fix compilation
      rl2: fix compilation
      wnv1: fix compilation
      yop: fix compilation
      tiff: resolve conflicts
      interplayvideo: fix compilation
      qpeg: resolve conflicts (FIXME/TESTME).

Hendrik Leppkes (33):
      012v: convert to refcounted frames
      8bps: fix compilation
      8svx: resolve conflicts
      4xm: resolve conflicts
      aasc: resolve conflicts
      bfi: fix compilation
      aura: fix compilation
      alsdec: resolve conflicts
      avrndec: convert to refcounted frames
      avuidec: convert to refcounted frames
      bintext: convert to refcounted frames
      cavsdec: resolve conflicts
      brender_pix: convert to refcounted frames
      cinepak: resolve conflicts
      cinepak: avoid using AVFrame struct directly in private context
      cljr: fix compilation
      cpia: convert to refcounted frames
      cscd: resolve conflicts
      iff: resolve conflicts and do proper conversion to refcounted frames
      4xm: fix reference frame handling
      cyuv: fix compilation
      dxa: fix compilation
      eacmv: fix compilation
      eamad: fix compilation
      eatgv: fix compilation
      escape124: remove unused variable.
      escape130: convert to refcounted frames
      evrcdec: convert to refcounted frames
      exr: convert to refcounted frames
      mvcdec: convert to refcounted frames
      paf: properly free the frame data on decode close
      sgirle: convert to refcounted frames
      lavfi/moviesrc: use refcounted frames

Michael Niedermayer (56):
      Merge commit '759001c534287a96dc96d1e274665feb7059145d'
      resolve conflicts in headers
      motion_est: resolve conflict
      mpeg4videodec: fix conflicts
      dpcm conflict fix
      dpx: fix conflicts
      indeo3: resolve confilcts
      kmvc: resolve conflicts
      kmvc: resolve conflicts
      h264: resolve conflicts
      utils: resolve conflicts
      rawdec: resolve conflcits
      mpegvideo: resolve conflicts
      svq1enc: resolve conflicts
      mpegvideo: dont clear data, fix assertion failure on fate vsynth1 with threads
      pthreads: resolve conflicts
      frame_thread_encoder: simple compilefix not yet tested
      snow: update to buffer refs
      crytsalhd: fix compile
      dirac: switch to new API
      sonic: update to new API
      svq1: resolve conflict, update to new API
      ffwavesynth: update to new buffer API
      g729: update to new API
      indeo5: fix compile
      j2kdec: update to new buffer API
      linopencore-amr: fix compile
      libvorbisdec: update to new API
      loco: fix compile
      paf: update to new API
      proresdec: update to new API
      vp56: update to new api / resolve conflicts
      xface: convert to refcounted frames
      xan: fix compile&fate
      v408: update to ref counted buffers
      v308: update to ref counted buffers
      yuv4dec: update to ref counted buffers
      y41p: update to ref counted frames
      xbm: update to refcounted frames
      targa_y216: update to refcounted buffers
      qpeg: fix fate/crash
      cdxl: fix fate
      tscc: fix reget buffer useage
      targa_y216dec: fix style
      msmpeg4: fix fate
      h264: ref_picture() copy fields that have been lost too
      update_frame_pool: use channel field
      h264: Put code that prevents deadlocks back
      mpegvideo: dont allow last == current
      wmalossless: fix buffer ref messup
      ff_alloc_picture: free tables in case of dimension mismatches
      h264: fix null pointer dereference and assertion failure
      frame_thread_encoder: update to bufrefs
      ec: fix used arrays
      snowdec: fix off by 1 error in dimensions check
      h264: disallow single unpaired fields as references of frames

Paul B Mahol (2):
      lavc/vima: convert to refcounted frames
      sanm: convert to refcounted frames

Conflicts:
	libavcodec/4xm.c
	libavcodec/8bps.c
	libavcodec/8svx.c
	libavcodec/aasc.c
	libavcodec/alsdec.c
	libavcodec/anm.c
	libavcodec/ansi.c
	libavcodec/avs.c
	libavcodec/bethsoftvideo.c
	libavcodec/bfi.c
	libavcodec/c93.c
	libavcodec/cavsdec.c
	libavcodec/cdgraphics.c
	libavcodec/cinepak.c
	libavcodec/cljr.c
	libavcodec/cscd.c
	libavcodec/dnxhddec.c
	libavcodec/dpcm.c
	libavcodec/dpx.c
	libavcodec/dsicinav.c
	libavcodec/dvdec.c
	libavcodec/dxa.c
	libavcodec/eacmv.c
	libavcodec/eamad.c
	libavcodec/eatgq.c
	libavcodec/eatgv.c
	libavcodec/eatqi.c
	libavcodec/error_resilience.c
	libavcodec/escape124.c
	libavcodec/ffv1.h
	libavcodec/ffv1dec.c
	libavcodec/flicvideo.c
	libavcodec/fraps.c
	libavcodec/frwu.c
	libavcodec/g723_1.c
	libavcodec/gifdec.c
	libavcodec/h264.c
	libavcodec/h264.h
	libavcodec/h264_direct.c
	libavcodec/h264_loopfilter.c
	libavcodec/h264_refs.c
	libavcodec/huffyuvdec.c
	libavcodec/idcinvideo.c
	libavcodec/iff.c
	libavcodec/indeo2.c
	libavcodec/indeo3.c
	libavcodec/internal.h
	libavcodec/interplayvideo.c
	libavcodec/ivi_common.c
	libavcodec/jvdec.c
	libavcodec/kgv1dec.c
	libavcodec/kmvc.c
	libavcodec/lagarith.c
	libavcodec/libopenjpegdec.c
	libavcodec/mdec.c
	libavcodec/mimic.c
	libavcodec/mjpegbdec.c
	libavcodec/mjpegdec.c
	libavcodec/mmvideo.c
	libavcodec/motion_est.c
	libavcodec/motionpixels.c
	libavcodec/mpc7.c
	libavcodec/mpeg12.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo.h
	libavcodec/msrle.c
	libavcodec/msvideo1.c
	libavcodec/nuv.c
	libavcodec/options_table.h
	libavcodec/pcx.c
	libavcodec/pictordec.c
	libavcodec/pngdec.c
	libavcodec/pnmdec.c
	libavcodec/pthread.c
	libavcodec/qpeg.c
	libavcodec/qtrle.c
	libavcodec/r210dec.c
	libavcodec/rawdec.c
	libavcodec/roqvideodec.c
	libavcodec/rpza.c
	libavcodec/smacker.c
	libavcodec/smc.c
	libavcodec/svq1dec.c
	libavcodec/svq1enc.c
	libavcodec/targa.c
	libavcodec/tiertexseqv.c
	libavcodec/tiff.c
	libavcodec/tmv.c
	libavcodec/truemotion1.c
	libavcodec/truemotion2.c
	libavcodec/tscc.c
	libavcodec/ulti.c
	libavcodec/utils.c
	libavcodec/utvideodec.c
	libavcodec/v210dec.c
	libavcodec/v210x.c
	libavcodec/vb.c
	libavcodec/vble.c
	libavcodec/vcr1.c
	libavcodec/vmdav.c
	libavcodec/vmnc.c
	libavcodec/vp3.c
	libavcodec/vp56.c
	libavcodec/vp56.h
	libavcodec/vp6.c
	libavcodec/vqavideo.c
	libavcodec/wavpack.c
	libavcodec/xl.c
	libavcodec/xxan.c
	libavcodec/zmbv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-03-12 03:23:28 +01:00
Michael Niedermayer
c4e8821732 Merge commit '7ecc2d403ce5c7b6ea3b1f368dccefd105209c7e' 
* commit '7ecc2d403ce5c7b6ea3b1f368dccefd105209c7e':
  Move AVFrame from lavc to lavu.

Conflicts:
	libavcodec/avcodec.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-03-08 20:33:26 +01:00
Anton Khirnov
759001c534 lavc decoders: work with refcounted frames. 2013-03-08 07:38:30 +01:00
Michael Niedermayer
f232659130 tiff: use AVFrame accessor functions 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-03-01 23:18:22 +01:00
Michael Niedermayer
a34418c28e tiff: check bppcount 
Fixes division by 0

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-19 17:57:36 +01:00
Michael Niedermayer
e1219cdaf9 tiff: Check buffer allocation and pointer increment more carefully in shorts2str() and double2str() 
Fixes out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-12 23:49:41 +01:00
Michael Niedermayer
0e3dacb11e tiff: dont leave geotag_count in an invalid state on errors. 
Fixes out of array reads

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-10 20:24:53 +01:00
Michael Niedermayer
f28043d0a3 tiff: check for failure in search_keyval() 
Fixes null pointer dereference

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-10 20:18:16 +01:00
Michael Niedermayer
b16830840e tiff: in add_string_metadata() check the count more completely 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-27 04:53:03 +01:00
Michael Niedermayer
659546b42d tiff: Fix assignments in if() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-14 05:05:39 +01:00
Michael Niedermayer
501db2f32b Merge commit '9dbbda235d93d628777b986e502213f1ed390973' 
* commit '9dbbda235d93d628777b986e502213f1ed390973':
  vb: return meaningful error codes.
  ptx: return meaningful error codes.
  tiff: return meaningful error codes.
  vqavideo: return meaningful error codes.
  mss2: return meaningful error codes.
  v210dec: return meaningful error codes
  indeo2: cosmetics, reformat

Conflicts:
	libavcodec/indeo2.c
	libavcodec/tiff.c
	libavcodec/v210dec.c
	libavcodec/vb.c
	libavcodec/vqavideo.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-07 01:24:32 +01:00
Anton Khirnov
b2a7b81b9c tiff: return meaningful error codes. 2013-01-06 13:31:40 +01:00
Piotr Bandurski
4784a135b2 tiffdec: Use the correct height field. 
Fixes Ticket913

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-06 01:56:53 +01:00
Michael Niedermayer
52334f5be2 tiff: print error for old style LZW 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-03 04:26:57 +01:00
Piotr Bandurski
17714adbf8 tiffdec: support LZW compression with inverted FillOrder 2012-12-20 15:38:52 +00:00
Piotr Bandurski
7f01247572 tiff: support zlib with invertedFillOrder 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-12-09 01:00:54 +01:00
Michael Niedermayer
fc1152de41 Merge commit 'df9b9567518f2840d79a4a96b447ebe1aa326408' 
* commit 'df9b9567518f2840d79a4a96b447ebe1aa326408':
  lavc: fix decode_frame() third parameter semantics for video decoders

Conflicts:
	libavcodec/cscd.c
	libavcodec/eamad.c
	libavcodec/ffv1dec.c
	libavcodec/gifdec.c
	libavcodec/h264.c
	libavcodec/iff.c
	libavcodec/mjpegdec.c
	libavcodec/pcx.c
	libavcodec/vp56.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-12-05 17:20:19 +01:00
Michael Niedermayer
874c5b02c4 Merge commit '594d4d5df3c70404168701dd5c90b7e6e5587793' 
* commit '594d4d5df3c70404168701dd5c90b7e6e5587793':
  lavc: add a wrapper for AVCodecContext.get_buffer().

Conflicts:
	libavcodec/4xm.c
	libavcodec/8svx.c
	libavcodec/bmv.c
	libavcodec/cljr.c
	libavcodec/cscd.c
	libavcodec/dnxhddec.c
	libavcodec/dpcm.c
	libavcodec/dpx.c
	libavcodec/eacmv.c
	libavcodec/eamad.c
	libavcodec/frwu.c
	libavcodec/g723_1.c
	libavcodec/gifdec.c
	libavcodec/idcinvideo.c
	libavcodec/iff.c
	libavcodec/indeo3.c
	libavcodec/internal.h
	libavcodec/interplayvideo.c
	libavcodec/kmvc.c
	libavcodec/mpc7.c
	libavcodec/mpegaudiodec.c
	libavcodec/pcx.c
	libavcodec/pngdec.c
	libavcodec/pnmdec.c
	libavcodec/rl2.c
	libavcodec/snow.c
	libavcodec/targa.c
	libavcodec/tscc.c
	libavcodec/txd.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/vb.c
	libavcodec/vmdav.c
	libavcodec/vp56.c
	libavcodec/vqavideo.c
	libavcodec/wavpack.c
	libavcodec/wnv1.c
	libavcodec/xl.c
	libavcodec/yop.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2012-12-05 15:18:12 +01:00
Anton Khirnov
df9b956751 lavc: fix decode_frame() third parameter semantics for video decoders 
It's got_frame, not data size
 2012-12-04 21:45:36 +01:00
Anton Khirnov
594d4d5df3 lavc: add a wrapper for AVCodecContext.get_buffer(). 
It will be useful in the upcoming transition to refcounted AVFrames.
 2012-12-04 21:41:59 +01:00
Michael Niedermayer
27eada287a tiffdec: better checks for bitstream offsets, fixes out of array reads 
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-11-29 15:35:05 +01:00
Michael Niedermayer
02a325cb6f tiffdec: check rps, fix infinite loop. 
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-11-09 19:28:57 +01:00
Michael Niedermayer
6d1c5ea04a tiffdec: check count in metadata reading. 
Fixes out of array access

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-11-09 12:14:28 +01:00
Michael Niedermayer
ce1ebb31a9 tiffdec: use checked reads for tget*() 
Fixes out of array reads

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-11-09 12:05:03 +01:00
Clément Bœsch
6fb2fd895e lavc: add lavfi metadata support. 
This commit introduces a new AVPacket side data type:
AV_PKT_DATA_STRINGS_METADATA. Its main goal is to provide a way to
transmit the metadata from the AVFilterBufferRef up to the AVFrame. This
is at the moment "only" useful for lavfi input from libavdevice:
lavd/lavfi only outputs packets, and the metadata from the buffer ref
kept in its context needs to be transmitted from the packet to the frame
by the decoders. The buffer ref can be destroyed at any time (along with
the metadata), and a duplication of the AVPacket needs to duplicate the
metadata as well, so the choice of using the side data to store them was
selected.

Making sure lavd/lavfi raises the metadata is useful to allow tools like
ffprobe to access the filters metadata (it is at the moment the only
way); ffprobe will now automatically show the AVFrame metadata in any
customizable output format for users. API users will also be able to
access the AVFrame->metadata pointer the same way ffprobe does
(av_frame_get_metadata).

All the changes are done in this single commit to avoid some memory
leaks: for instances, the changes in lavfi/avcodec.c are meant to
duplicate the metadata from the buffer ref into the AVFrame. Unless we
have an internal way of freeing the AVFrame->metadata automatically, it
will leak in most of the user apps. To fix this problem, we introduce
AVCodecContext->metadata and link avctx->metadata to the current
frame->metadata and free it at each decode frame call (and in the codec
closing callback for the last one). But doing this also means to update
the way the tiff decoder already handles the AVFrame->metadata (it's the
only one decoder with frame metadata at the moment), by making sure it
is not trying to free a pointer already freed by the lavc internals.

The lavfi/avcodec.c buffer ref code is based on an old Thomas Kühnel
work, the rest of the code belongs to the commit author.

Signed-off-by: Thomas Kühnel <kuehnelth@googlemail.com>
Signed-off-by: Clément Bœsch <ubitux@gmail.com>
 2012-10-21 17:29:10 +02:00
Michael Niedermayer
d185c8a79b tiff: run strlen() after setting the pointer 
Fixes CID733803
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-10-17 20:58:08 +02:00