diff options
author | theuni <theuni-nospam-@xbmc.org> | 2011-01-24 16:05:21 -0500 |
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committer | theuni <theuni-nospam-@xbmc.org> | 2011-01-24 16:05:21 -0500 |
commit | c51b1189e3d5353e842991f5859ddcea0f73e426 (patch) | |
tree | ef2cb8a6184699aa614f3655dca4ce661cdc108e /lib/ffmpeg/libavcodec/mjpegdec.h | |
parent | be61ebdc9e897fe40c6f371111724de79ddee8d5 (diff) |
Merged cptspiff's code-reshuffle branch.
Squashed commit due to build breakage during code-reshuffle history.
Conflicts:
xbmc/Util.cpp
xbmc/cdrip/CDDARipper.cpp
xbmc/filesystem/Directory.cpp
xbmc/filesystem/File.cpp
Diffstat (limited to 'lib/ffmpeg/libavcodec/mjpegdec.h')
-rw-r--r-- | lib/ffmpeg/libavcodec/mjpegdec.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/lib/ffmpeg/libavcodec/mjpegdec.h b/lib/ffmpeg/libavcodec/mjpegdec.h new file mode 100644 index 0000000000..bbf734b56f --- /dev/null +++ b/lib/ffmpeg/libavcodec/mjpegdec.h @@ -0,0 +1,120 @@ +/* + * MJPEG decoder + * Copyright (c) 2000, 2001 Fabrice Bellard + * Copyright (c) 2003 Alex Beregszaszi + * Copyright (c) 2003-2004 Michael Niedermayer + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * MJPEG decoder. + */ + +#ifndef AVCODEC_MJPEGDEC_H +#define AVCODEC_MJPEGDEC_H + +#include "avcodec.h" +#include "get_bits.h" +#include "dsputil.h" + +#define MAX_COMPONENTS 4 + +typedef struct MJpegDecodeContext { + AVCodecContext *avctx; + GetBitContext gb; + + int start_code; /* current start code */ + int buffer_size; + uint8_t *buffer; + + int16_t quant_matrixes[4][64]; + VLC vlcs[2][4]; + int qscale[4]; ///< quantizer scale calculated from quant_matrixes + + int org_height; /* size given at codec init */ + int first_picture; /* true if decoding first picture */ + int interlaced; /* true if interlaced */ + int bottom_field; /* true if bottom field */ + int lossless; + int ls; + int progressive; + int rgb; + int rct; /* standard rct */ + int pegasus_rct; /* pegasus reversible colorspace transform */ + int bits; /* bits per component */ + + int maxval; + int near; ///< near lossless bound (si 0 for lossless) + int t1,t2,t3; + int reset; ///< context halfing intervall ?rename + + int width, height; + int mb_width, mb_height; + int nb_components; + int block_stride[MAX_COMPONENTS]; + int component_id[MAX_COMPONENTS]; + int h_count[MAX_COMPONENTS]; /* horizontal and vertical count for each component */ + int v_count[MAX_COMPONENTS]; + int comp_index[MAX_COMPONENTS]; + int dc_index[MAX_COMPONENTS]; + int ac_index[MAX_COMPONENTS]; + int nb_blocks[MAX_COMPONENTS]; + int h_scount[MAX_COMPONENTS]; + int v_scount[MAX_COMPONENTS]; + int h_max, v_max; /* maximum h and v counts */ + int quant_index[4]; /* quant table index for each component */ + int last_dc[MAX_COMPONENTS]; /* last DEQUANTIZED dc (XXX: am I right to do that ?) */ + AVFrame picture; /* picture structure */ + int got_picture; ///< we found a SOF and picture is valid, too. + int linesize[MAX_COMPONENTS]; ///< linesize << interlaced + int8_t *qscale_table; + DECLARE_ALIGNED(16, DCTELEM, block)[64]; + DCTELEM (*blocks[MAX_COMPONENTS])[64]; ///< intermediate sums (progressive mode) + uint8_t *last_nnz[MAX_COMPONENTS]; + uint64_t coefs_finished[MAX_COMPONENTS]; ///< bitmask of which coefs have been completely decoded (progressive mode) + ScanTable scantable; + DSPContext dsp; + + int restart_interval; + int restart_count; + + int buggy_avid; + int cs_itu601; + int interlace_polarity; + + int mjpb_skiptosod; + + int cur_scan; /* current scan, used by JPEG-LS */ + int flipped; /* true if picture is flipped */ + + uint16_t (*ljpeg_buffer)[4]; + unsigned int ljpeg_buffer_size; +} MJpegDecodeContext; + +int ff_mjpeg_decode_init(AVCodecContext *avctx); +int ff_mjpeg_decode_end(AVCodecContext *avctx); +int ff_mjpeg_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + AVPacket *avpkt); +int ff_mjpeg_decode_dqt(MJpegDecodeContext *s); +int ff_mjpeg_decode_dht(MJpegDecodeContext *s); +int ff_mjpeg_decode_sof(MJpegDecodeContext *s); +int ff_mjpeg_decode_sos(MJpegDecodeContext *s); + +#endif /* AVCODEC_MJPEGDEC_H */ |