mirror of https://github.com/FFmpeg/FFmpeg.git
* qatar/master: Remove ffmpeg. aacenc: Simplify windowing aacenc: Move saved overlap samples to the beginning of the same buffer as incoming samples. aacenc: Deinterleave input samples before processing. aacenc: Store channel count in AACEncContext. aacenc: Move Q^3/4 calculation to it's own table aacenc: Request normalized float samples instead of converting s16 samples to float. aacpsy: Replace an if with FFMAX in LAME windowing. aacenc: cosmetics, replace 'rd' with 'bits' in codebook_trellis_rate to make it more clear what is being calculated. aacpsy: cosmetics, change a FIXME to a NOTE about subshort comparisons aacenc: cosmetics: move init() and end() to the bottom of the file. aacenc: aac_encode_init() cleanup XWD encoder and decoder vc1: don't read the interpfrm and bfraction elements for interlaced frames mxfdec: fix memleak on mxf_read_close() westwood: split the AUD and VQA demuxers into separate files. Conflicts: .gitignore Changelog Makefile configure doc/ffmpeg.texi ffmpeg.c libavcodec/Makefile libavcodec/aacenc.c libavcodec/allcodecs.c libavcodec/avcodec.h libavcodec/version.h libavformat/Makefile libavformat/img2.c Merged-by: Michael Niedermayer <michaelni@gmx.at>release/0.10
Michael Niedermayer
13 years ago
commit
0bb57f8bf0
20 changed files with 1027 additions and 342 deletions
@ -0,0 +1,41 @@ |
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/*
|
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* XWD image format |
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* |
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* Copyright (c) 2012 Paul B Mahol |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
||||
* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* 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. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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#ifndef AVCODEC_XWD_H |
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#define AVCODEC_XWD_H |
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|
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#define XWD_VERSION 7 |
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#define XWD_HEADER_SIZE 100 |
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#define XWD_CMAP_SIZE 12 |
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|
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#define XWD_XY_BITMAP 0 |
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#define XWD_XY_PIXMAP 1 |
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#define XWD_Z_PIXMAP 2 |
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|
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#define XWD_STATIC_GRAY 0 |
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#define XWD_GRAY_SCALE 1 |
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#define XWD_STATIC_COLOR 2 |
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#define XWD_PSEUDO_COLOR 3 |
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#define XWD_TRUE_COLOR 4 |
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#define XWD_DIRECT_COLOR 5 |
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|
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#endif /* AVCODEC_XWD_H */ |
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@ -0,0 +1,267 @@ |
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/*
|
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* XWD image format |
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* |
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* Copyright (c) 2012 Paul B Mahol |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav 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. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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#include "libavutil/imgutils.h" |
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#include "avcodec.h" |
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#include "bytestream.h" |
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#include "xwd.h" |
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|
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static av_cold int xwd_decode_init(AVCodecContext *avctx) |
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{ |
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avctx->coded_frame = avcodec_alloc_frame(); |
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if (!avctx->coded_frame) |
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return AVERROR(ENOMEM); |
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|
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return 0; |
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} |
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|
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static int xwd_decode_frame(AVCodecContext *avctx, void *data, |
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int *data_size, AVPacket *avpkt) |
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{ |
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AVFrame *p = avctx->coded_frame; |
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const uint8_t *buf = avpkt->data; |
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int i, ret, buf_size = avpkt->size; |
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uint32_t version, header_size, vclass, ncolors; |
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uint32_t xoffset, be, bpp, lsize, rsize; |
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uint32_t pixformat, pixdepth, bunit, bitorder, bpad; |
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uint32_t rgb[3]; |
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uint8_t *ptr; |
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if (buf_size < XWD_HEADER_SIZE) |
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return AVERROR_INVALIDDATA; |
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header_size = bytestream_get_be32(&buf); |
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if (buf_size < header_size) |
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return AVERROR_INVALIDDATA; |
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|
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version = bytestream_get_be32(&buf); |
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if (version != XWD_VERSION) { |
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av_log(avctx, AV_LOG_ERROR, "unsupported version\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (header_size < XWD_HEADER_SIZE) { |
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av_log(avctx, AV_LOG_ERROR, "invalid header size\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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pixformat = bytestream_get_be32(&buf); |
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pixdepth = bytestream_get_be32(&buf); |
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avctx->width = bytestream_get_be32(&buf); |
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avctx->height = bytestream_get_be32(&buf); |
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xoffset = bytestream_get_be32(&buf); |
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be = bytestream_get_be32(&buf); |
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bunit = bytestream_get_be32(&buf); |
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bitorder = bytestream_get_be32(&buf); |
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bpad = bytestream_get_be32(&buf); |
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bpp = bytestream_get_be32(&buf); |
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lsize = bytestream_get_be32(&buf); |
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vclass = bytestream_get_be32(&buf); |
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rgb[0] = bytestream_get_be32(&buf); |
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rgb[1] = bytestream_get_be32(&buf); |
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rgb[2] = bytestream_get_be32(&buf); |
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buf += 8; |
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ncolors = bytestream_get_be32(&buf); |
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buf += header_size - (XWD_HEADER_SIZE - 20); |
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av_log(avctx, AV_LOG_DEBUG, "pixformat %d, pixdepth %d, bunit %d, bitorder %d, bpad %d\n", |
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pixformat, pixdepth, bunit, bitorder, bpad); |
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av_log(avctx, AV_LOG_DEBUG, "vclass %d, ncolors %d, bpp %d, be %d, lsize %d, xoffset %d\n", |
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vclass, ncolors, bpp, be, lsize, xoffset); |
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av_log(avctx, AV_LOG_DEBUG, "red %0x, green %0x, blue %0x\n", rgb[0], rgb[1], rgb[2]); |
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|
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if (pixformat > XWD_Z_PIXMAP) { |
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av_log(avctx, AV_LOG_ERROR, "invalid pixmap format\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (pixdepth == 0 || pixdepth > 32) { |
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av_log(avctx, AV_LOG_ERROR, "invalid pixmap depth\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (xoffset) { |
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av_log_ask_for_sample(avctx, "unsupported xoffset %d\n", xoffset); |
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return AVERROR_PATCHWELCOME; |
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} |
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|
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if (be > 1) { |
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av_log(avctx, AV_LOG_ERROR, "invalid byte order\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (bitorder > 1) { |
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av_log(avctx, AV_LOG_ERROR, "invalid bitmap bit order\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (bunit != 8 && bunit != 16 && bunit != 32) { |
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av_log(avctx, AV_LOG_ERROR, "invalid bitmap unit\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (bpad != 8 && bpad != 16 && bpad != 32) { |
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av_log(avctx, AV_LOG_ERROR, "invalid bitmap scan-line pad\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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if (bpp == 0 || bpp > 32) { |
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av_log(avctx, AV_LOG_ERROR, "invalid bits per pixel\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (ncolors > 256) { |
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av_log(avctx, AV_LOG_ERROR, "invalid number of entries in colormap\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if ((ret = av_image_check_size(avctx->width, avctx->height, 0, NULL)) < 0) |
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return ret; |
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rsize = FFALIGN(avctx->width * bpp, bpad) / 8; |
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if (lsize < rsize) { |
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av_log(avctx, AV_LOG_ERROR, "invalid bytes per scan-line\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (buf_size < header_size + ncolors * XWD_CMAP_SIZE + avctx->height * lsize) { |
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av_log(avctx, AV_LOG_ERROR, "input buffer too small\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (pixformat != XWD_Z_PIXMAP) { |
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av_log(avctx, AV_LOG_ERROR, "pixmap format %d unsupported\n", pixformat); |
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return AVERROR_PATCHWELCOME; |
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} |
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|
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avctx->pix_fmt = PIX_FMT_NONE; |
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switch (vclass) { |
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case XWD_STATIC_GRAY: |
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case XWD_GRAY_SCALE: |
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if (bpp != 1) |
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return AVERROR_INVALIDDATA; |
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if (pixdepth == 1) |
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avctx->pix_fmt = PIX_FMT_MONOWHITE; |
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break; |
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case XWD_STATIC_COLOR: |
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case XWD_PSEUDO_COLOR: |
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if (bpp == 8) |
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avctx->pix_fmt = PIX_FMT_PAL8; |
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break; |
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case XWD_TRUE_COLOR: |
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case XWD_DIRECT_COLOR: |
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if (bpp != 16 && bpp != 24 && bpp != 32) |
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return AVERROR_INVALIDDATA; |
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if (bpp == 16 && pixdepth == 15) { |
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if (rgb[0] == 0x7C00 && rgb[1] == 0x3E0 && rgb[2] == 0x1F) |
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avctx->pix_fmt = be ? PIX_FMT_RGB555BE : PIX_FMT_RGB555LE; |
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else if (rgb[0] == 0x1F && rgb[1] == 0x3E0 && rgb[2] == 0x7C00) |
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avctx->pix_fmt = be ? PIX_FMT_BGR555BE : PIX_FMT_BGR555LE; |
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} else if (bpp == 16 && pixdepth == 16) { |
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if (rgb[0] == 0xF800 && rgb[1] == 0x7E0 && rgb[2] == 0x1F) |
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avctx->pix_fmt = be ? PIX_FMT_RGB565BE : PIX_FMT_RGB565LE; |
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else if (rgb[0] == 0x1F && rgb[1] == 0x7E0 && rgb[2] == 0xF800) |
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avctx->pix_fmt = be ? PIX_FMT_BGR565BE : PIX_FMT_BGR565LE; |
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} else if (bpp == 24) { |
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if (rgb[0] == 0xFF0000 && rgb[1] == 0xFF00 && rgb[2] == 0xFF) |
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avctx->pix_fmt = be ? PIX_FMT_RGB24 : PIX_FMT_BGR24; |
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else if (rgb[0] == 0xFF && rgb[1] == 0xFF00 && rgb[2] == 0xFF0000) |
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avctx->pix_fmt = be ? PIX_FMT_BGR24 : PIX_FMT_RGB24; |
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} else if (bpp == 32) { |
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if (rgb[0] == 0xFF0000 && rgb[1] == 0xFF00 && rgb[2] == 0xFF) |
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avctx->pix_fmt = be ? PIX_FMT_ARGB : PIX_FMT_BGRA; |
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else if (rgb[0] == 0xFF && rgb[1] == 0xFF00 && rgb[2] == 0xFF0000) |
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avctx->pix_fmt = be ? PIX_FMT_ABGR : PIX_FMT_RGBA; |
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} |
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buf += ncolors * XWD_CMAP_SIZE; |
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break; |
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default: |
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av_log(avctx, AV_LOG_ERROR, "invalid visual class\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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|
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if (avctx->pix_fmt == PIX_FMT_NONE) { |
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av_log_ask_for_sample(avctx, "unknown file: bpp %d, pixdepth %d, vclass %d\n", bpp, pixdepth, vclass); |
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return AVERROR_PATCHWELCOME; |
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} |
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if (p->data[0]) |
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avctx->release_buffer(avctx, p); |
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|
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p->reference = 0; |
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if ((ret = avctx->get_buffer(avctx, p)) < 0) { |
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av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); |
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return ret; |
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} |
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|
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p->key_frame = 1; |
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p->pict_type = AV_PICTURE_TYPE_I; |
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if (avctx->pix_fmt == PIX_FMT_PAL8) { |
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uint32_t *dst = (uint32_t *)p->data[1]; |
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uint8_t red, green, blue; |
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for (i = 0; i < ncolors; i++) { |
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buf += 4; // skip colormap entry number
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red = *buf; buf += 2; |
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green = *buf; buf += 2; |
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blue = *buf; buf += 2; |
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buf += 2; // skip bitmask flag and padding
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dst[i] = red << 16 | green << 8 | blue; |
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} |
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} |
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ptr = p->data[0]; |
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for (i = 0; i < avctx->height; i++) { |
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bytestream_get_buffer(&buf, ptr, rsize); |
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buf += lsize - rsize; |
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ptr += p->linesize[0]; |
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} |
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|
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*data_size = sizeof(AVFrame); |
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*(AVFrame *)data = *p; |
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|
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return buf_size; |
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} |
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|
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static av_cold int xwd_decode_close(AVCodecContext *avctx) |
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{ |
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if (avctx->coded_frame->data[0]) |
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avctx->release_buffer(avctx, avctx->coded_frame); |
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|
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av_freep(&avctx->coded_frame); |
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|
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return 0; |
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} |
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|
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AVCodec ff_xwd_decoder = { |
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.name = "xwd", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = CODEC_ID_XWD, |
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.init = xwd_decode_init, |
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.close = xwd_decode_close, |
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.decode = xwd_decode_frame, |
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.capabilities = CODEC_CAP_DR1, |
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.long_name = NULL_IF_CONFIG_SMALL("XWD (X Window Dump) image"), |
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}; |
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@ -0,0 +1,246 @@ |
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/*
|
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* XWD image format |
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* |
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* Copyright (c) 2012 Paul B Mahol |
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* |
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* This file is part of Libav. |
||||
* |
||||
* Libav 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. |
||||
* |
||||
* Libav 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 Libav; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/pixdesc.h" |
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#include "avcodec.h" |
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#include "bytestream.h" |
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#include "xwd.h" |
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|
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#define WINDOW_NAME "lavcxwdenc" |
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#define WINDOW_NAME_SIZE 11 |
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|
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static av_cold int xwd_encode_init(AVCodecContext *avctx) |
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{ |
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avctx->coded_frame = avcodec_alloc_frame(); |
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if (!avctx->coded_frame) |
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return AVERROR(ENOMEM); |
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|
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return 0; |
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} |
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|
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static int xwd_encode_frame(AVCodecContext *avctx, uint8_t *buf, |
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int buf_size, void *data) |
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{ |
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AVFrame *p = data; |
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enum PixelFormat pix_fmt = avctx->pix_fmt; |
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uint32_t pixdepth, bpp, bpad, ncolors = 0, lsize, vclass, be = 0; |
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uint32_t rgb[3] = { 0 }; |
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uint32_t header_size; |
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int i, out_size; |
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uint8_t *ptr; |
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|
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pixdepth = av_get_bits_per_pixel(&av_pix_fmt_descriptors[pix_fmt]); |
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if (av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_BE) |
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be = 1; |
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switch (pix_fmt) { |
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case PIX_FMT_ARGB: |
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case PIX_FMT_BGRA: |
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case PIX_FMT_RGBA: |
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case PIX_FMT_ABGR: |
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if (pix_fmt == PIX_FMT_ARGB || |
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pix_fmt == PIX_FMT_ABGR) |
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be = 1; |
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if (pix_fmt == PIX_FMT_ABGR || |
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pix_fmt == PIX_FMT_RGBA) { |
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rgb[0] = 0xFF; |
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rgb[1] = 0xFF00; |
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rgb[2] = 0xFF0000; |
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} else { |
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rgb[0] = 0xFF0000; |
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rgb[1] = 0xFF00; |
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rgb[2] = 0xFF; |
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} |
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bpp = 32; |
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pixdepth = 24; |
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vclass = XWD_TRUE_COLOR; |
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bpad = 32; |
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break; |
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case PIX_FMT_BGR24: |
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case PIX_FMT_RGB24: |
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if (pix_fmt == PIX_FMT_RGB24) |
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be = 1; |
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bpp = 24; |
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vclass = XWD_TRUE_COLOR; |
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bpad = 32; |
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rgb[0] = 0xFF0000; |
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rgb[1] = 0xFF00; |
||||
rgb[2] = 0xFF; |
||||
break; |
||||
case PIX_FMT_RGB565LE: |
||||
case PIX_FMT_RGB565BE: |
||||
case PIX_FMT_BGR565LE: |
||||
case PIX_FMT_BGR565BE: |
||||
if (pix_fmt == PIX_FMT_BGR565LE || |
||||
pix_fmt == PIX_FMT_BGR565BE) { |
||||
rgb[0] = 0x1F; |
||||
rgb[1] = 0x7E0; |
||||
rgb[2] = 0xF800; |
||||
} else { |
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rgb[0] = 0xF800; |
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rgb[1] = 0x7E0; |
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rgb[2] = 0x1F; |
||||
} |
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bpp = 16; |
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vclass = XWD_TRUE_COLOR; |
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bpad = 16; |
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break; |
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case PIX_FMT_RGB555LE: |
||||
case PIX_FMT_RGB555BE: |
||||
case PIX_FMT_BGR555LE: |
||||
case PIX_FMT_BGR555BE: |
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if (pix_fmt == PIX_FMT_BGR555LE || |
||||
pix_fmt == PIX_FMT_BGR555BE) { |
||||
rgb[0] = 0x1F; |
||||
rgb[1] = 0x3E0; |
||||
rgb[2] = 0x7C00; |
||||
} else { |
||||
rgb[0] = 0x7C00; |
||||
rgb[1] = 0x3E0; |
||||
rgb[2] = 0x1F; |
||||
} |
||||
bpp = 16; |
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vclass = XWD_TRUE_COLOR; |
||||
bpad = 16; |
||||
break; |
||||
case PIX_FMT_RGB8: |
||||
case PIX_FMT_BGR8: |
||||
case PIX_FMT_RGB4_BYTE: |
||||
case PIX_FMT_BGR4_BYTE: |
||||
case PIX_FMT_PAL8: |
||||
bpp = 8; |
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vclass = XWD_PSEUDO_COLOR; |
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bpad = 8; |
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ncolors = 256; |
||||
break; |
||||
case PIX_FMT_MONOWHITE: |
||||
bpp = 1; |
||||
bpad = 8; |
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vclass = XWD_STATIC_GRAY; |
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break; |
||||
default: |
||||
av_log(avctx, AV_LOG_INFO, "unsupported pixel format\n"); |
||||
return AVERROR(EINVAL); |
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} |
||||
|
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lsize = FFALIGN(bpp * avctx->width, bpad) / 8; |
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header_size = XWD_HEADER_SIZE + WINDOW_NAME_SIZE; |
||||
out_size = header_size + ncolors * XWD_CMAP_SIZE + avctx->height * lsize; |
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|
||||
if (buf_size < out_size) { |
||||
av_log(avctx, AV_LOG_ERROR, "output buffer too small\n"); |
||||
return AVERROR(ENOMEM); |
||||
} |
||||
|
||||
avctx->coded_frame->key_frame = 1; |
||||
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
||||
|
||||
bytestream_put_be32(&buf, header_size); |
||||
bytestream_put_be32(&buf, XWD_VERSION); // file version
|
||||
bytestream_put_be32(&buf, XWD_Z_PIXMAP); // pixmap format
|
||||
bytestream_put_be32(&buf, pixdepth); // pixmap depth in pixels
|
||||
bytestream_put_be32(&buf, avctx->width); // pixmap width in pixels
|
||||
bytestream_put_be32(&buf, avctx->height); // pixmap height in pixels
|
||||
bytestream_put_be32(&buf, 0); // bitmap x offset
|
||||
bytestream_put_be32(&buf, be); // byte order
|
||||
bytestream_put_be32(&buf, 32); // bitmap unit
|
||||
bytestream_put_be32(&buf, be); // bit-order of image data
|
||||
bytestream_put_be32(&buf, bpad); // bitmap scan-line pad in bits
|
||||
bytestream_put_be32(&buf, bpp); // bits per pixel
|
||||
bytestream_put_be32(&buf, lsize); // bytes per scan-line
|
||||
bytestream_put_be32(&buf, vclass); // visual class
|
||||
bytestream_put_be32(&buf, rgb[0]); // red mask
|
||||
bytestream_put_be32(&buf, rgb[1]); // green mask
|
||||
bytestream_put_be32(&buf, rgb[2]); // blue mask
|
||||
bytestream_put_be32(&buf, 8); // size of each bitmask in bits
|
||||
bytestream_put_be32(&buf, ncolors); // number of colors
|
||||
bytestream_put_be32(&buf, ncolors); // number of entries in color map
|
||||
bytestream_put_be32(&buf, avctx->width); // window width
|
||||
bytestream_put_be32(&buf, avctx->height); // window height
|
||||
bytestream_put_be32(&buf, 0); // window upper left X coordinate
|
||||
bytestream_put_be32(&buf, 0); // window upper left Y coordinate
|
||||
bytestream_put_be32(&buf, 0); // window border width
|
||||
bytestream_put_buffer(&buf, WINDOW_NAME, WINDOW_NAME_SIZE); |
||||
|
||||
for (i = 0; i < ncolors; i++) { |
||||
uint32_t val; |
||||
uint8_t red, green, blue; |
||||
|
||||
val = AV_RN32A(p->data[1] + i * 4); |
||||
red = (val >> 16) & 0xFF; |
||||
green = (val >> 8) & 0xFF; |
||||
blue = val & 0xFF; |
||||
|
||||
bytestream_put_be32(&buf, i); // colormap entry number
|
||||
bytestream_put_be16(&buf, red << 8); |
||||
bytestream_put_be16(&buf, green << 8); |
||||
bytestream_put_be16(&buf, blue << 8); |
||||
bytestream_put_byte(&buf, 0x7); // bitmask flag
|
||||
bytestream_put_byte(&buf, 0); // padding
|
||||
} |
||||
|
||||
ptr = p->data[0]; |
||||
for (i = 0; i < avctx->height; i++) { |
||||
bytestream_put_buffer(&buf, ptr, lsize); |
||||
ptr += p->linesize[0]; |
||||
} |
||||
|
||||
return out_size; |
||||
} |
||||
|
||||
static av_cold int xwd_encode_close(AVCodecContext *avctx) |
||||
{ |
||||
av_freep(&avctx->coded_frame); |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
AVCodec ff_xwd_encoder = { |
||||
.name = "xwd", |
||||
.type = AVMEDIA_TYPE_VIDEO, |
||||
.id = CODEC_ID_XWD, |
||||
.init = xwd_encode_init, |
||||
.encode = xwd_encode_frame, |
||||
.close = xwd_encode_close, |
||||
.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_BGRA, |
||||
PIX_FMT_RGBA, |
||||
PIX_FMT_ARGB, |
||||
PIX_FMT_ABGR, |
||||
PIX_FMT_RGB24, |
||||
PIX_FMT_BGR24, |
||||
PIX_FMT_RGB565BE, |
||||
PIX_FMT_RGB565LE, |
||||
PIX_FMT_BGR565BE, |
||||
PIX_FMT_BGR565LE, |
||||
PIX_FMT_RGB555BE, |
||||
PIX_FMT_RGB555LE, |
||||
PIX_FMT_BGR555BE, |
||||
PIX_FMT_BGR555LE, |
||||
PIX_FMT_RGB8, |
||||
PIX_FMT_BGR8, |
||||
PIX_FMT_RGB4_BYTE, |
||||
PIX_FMT_BGR4_BYTE, |
||||
PIX_FMT_PAL8, |
||||
PIX_FMT_MONOWHITE, |
||||
PIX_FMT_NONE }, |
||||
.long_name = NULL_IF_CONFIG_SMALL("XWD (X Window Dump) image"), |
||||
}; |
||||
@ -0,0 +1,173 @@ |
||||
/*
|
||||
* Westwood Studios AUD Format Demuxer |
||||
* Copyright (c) 2003 The ffmpeg Project |
||||
* |
||||
* This file is part of Libav. |
||||
* |
||||
* Libav 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. |
||||
* |
||||
* Libav 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 Libav; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
|
||||
/**
|
||||
* @file |
||||
* Westwood Studios AUD file demuxer |
||||
* by Mike Melanson (melanson@pcisys.net) |
||||
* for more information on the Westwood file formats, visit: |
||||
* http://www.pcisys.net/~melanson/codecs/
|
||||
* http://www.geocities.com/SiliconValley/8682/aud3.txt
|
||||
* |
||||
* Implementation note: There is no definite file signature for AUD files. |
||||
* The demuxer uses a probabilistic strategy for content detection. This |
||||
* entails performing sanity checks on certain header values in order to |
||||
* qualify a file. Refer to wsaud_probe() for the precise parameters. |
||||
*/ |
||||
|
||||
#include "libavutil/intreadwrite.h" |
||||
#include "avformat.h" |
||||
#include "internal.h" |
||||
|
||||
#define AUD_HEADER_SIZE 12 |
||||
#define AUD_CHUNK_PREAMBLE_SIZE 8 |
||||
#define AUD_CHUNK_SIGNATURE 0x0000DEAF |
||||
|
||||
typedef struct WsAudDemuxContext { |
||||
int audio_samplerate; |
||||
int audio_channels; |
||||
int audio_bits; |
||||
enum CodecID audio_type; |
||||
int audio_stream_index; |
||||
int64_t audio_frame_counter; |
||||
} WsAudDemuxContext; |
||||
|
||||
static int wsaud_probe(AVProbeData *p) |
||||
{ |
||||
int field; |
||||
|
||||
/* Probabilistic content detection strategy: There is no file signature
|
||||
* so perform sanity checks on various header parameters: |
||||
* 8000 <= sample rate (16 bits) <= 48000 ==> 40001 acceptable numbers |
||||
* flags <= 0x03 (2 LSBs are used) ==> 4 acceptable numbers |
||||
* compression type (8 bits) = 1 or 99 ==> 2 acceptable numbers |
||||
* first audio chunk signature (32 bits) ==> 1 acceptable number |
||||
* The number space contains 2^64 numbers. There are 40001 * 4 * 2 * 1 = |
||||
* 320008 acceptable number combinations. |
||||
*/ |
||||
|
||||
if (p->buf_size < AUD_HEADER_SIZE + AUD_CHUNK_PREAMBLE_SIZE) |
||||
return 0; |
||||
|
||||
/* check sample rate */ |
||||
field = AV_RL16(&p->buf[0]); |
||||
if ((field < 8000) || (field > 48000)) |
||||
return 0; |
||||
|
||||
/* enforce the rule that the top 6 bits of this flags field are reserved (0);
|
||||
* this might not be true, but enforce it until deemed unnecessary */ |
||||
if (p->buf[10] & 0xFC) |
||||
return 0; |
||||
|
||||
/* note: only check for WS IMA (type 99) right now since there is no
|
||||
* support for type 1 */ |
||||
if (p->buf[11] != 99) |
||||
return 0; |
||||
|
||||
/* read ahead to the first audio chunk and validate the first header signature */ |
||||
if (AV_RL32(&p->buf[16]) != AUD_CHUNK_SIGNATURE) |
||||
return 0; |
||||
|
||||
/* return 1/2 certainty since this file check is a little sketchy */ |
||||
return AVPROBE_SCORE_MAX / 2; |
||||
} |
||||
|
||||
static int wsaud_read_header(AVFormatContext *s, |
||||
AVFormatParameters *ap) |
||||
{ |
||||
WsAudDemuxContext *wsaud = s->priv_data; |
||||
AVIOContext *pb = s->pb; |
||||
AVStream *st; |
||||
unsigned char header[AUD_HEADER_SIZE]; |
||||
|
||||
if (avio_read(pb, header, AUD_HEADER_SIZE) != AUD_HEADER_SIZE) |
||||
return AVERROR(EIO); |
||||
wsaud->audio_samplerate = AV_RL16(&header[0]); |
||||
if (header[11] == 99) |
||||
wsaud->audio_type = CODEC_ID_ADPCM_IMA_WS; |
||||
else |
||||
return AVERROR_INVALIDDATA; |
||||
|
||||
/* flag 0 indicates stereo */ |
||||
wsaud->audio_channels = (header[10] & 0x1) + 1; |
||||
/* flag 1 indicates 16 bit audio */ |
||||
wsaud->audio_bits = (((header[10] & 0x2) >> 1) + 1) * 8; |
||||
|
||||
/* initialize the audio decoder stream */ |
||||
st = avformat_new_stream(s, NULL); |
||||
if (!st) |
||||
return AVERROR(ENOMEM); |
||||
avpriv_set_pts_info(st, 33, 1, wsaud->audio_samplerate); |
||||
st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
||||
st->codec->codec_id = wsaud->audio_type; |
||||
st->codec->codec_tag = 0; /* no tag */ |
||||
st->codec->channels = wsaud->audio_channels; |
||||
st->codec->sample_rate = wsaud->audio_samplerate; |
||||
st->codec->bits_per_coded_sample = wsaud->audio_bits; |
||||
st->codec->bit_rate = st->codec->channels * st->codec->sample_rate * |
||||
st->codec->bits_per_coded_sample / 4; |
||||
st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample; |
||||
|
||||
wsaud->audio_stream_index = st->index; |
||||
wsaud->audio_frame_counter = 0; |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static int wsaud_read_packet(AVFormatContext *s, |
||||
AVPacket *pkt) |
||||
{ |
||||
WsAudDemuxContext *wsaud = s->priv_data; |
||||
AVIOContext *pb = s->pb; |
||||
unsigned char preamble[AUD_CHUNK_PREAMBLE_SIZE]; |
||||
unsigned int chunk_size; |
||||
int ret = 0; |
||||
|
||||
if (avio_read(pb, preamble, AUD_CHUNK_PREAMBLE_SIZE) != |
||||
AUD_CHUNK_PREAMBLE_SIZE) |
||||
return AVERROR(EIO); |
||||
|
||||
/* validate the chunk */ |
||||
if (AV_RL32(&preamble[4]) != AUD_CHUNK_SIGNATURE) |
||||
return AVERROR_INVALIDDATA; |
||||
|
||||
chunk_size = AV_RL16(&preamble[0]); |
||||
ret= av_get_packet(pb, pkt, chunk_size); |
||||
if (ret != chunk_size) |
||||
return AVERROR(EIO); |
||||
pkt->stream_index = wsaud->audio_stream_index; |
||||
pkt->pts = wsaud->audio_frame_counter; |
||||
pkt->pts /= wsaud->audio_samplerate; |
||||
|
||||
/* 2 samples/byte, 1 or 2 samples per frame depending on stereo */ |
||||
wsaud->audio_frame_counter += (chunk_size * 2) / wsaud->audio_channels; |
||||
|
||||
return ret; |
||||
} |
||||
|
||||
AVInputFormat ff_wsaud_demuxer = { |
||||
.name = "wsaud", |
||||
.long_name = NULL_IF_CONFIG_SMALL("Westwood Studios audio format"), |
||||
.priv_data_size = sizeof(WsAudDemuxContext), |
||||
.read_probe = wsaud_probe, |
||||
.read_header = wsaud_read_header, |
||||
.read_packet = wsaud_read_packet, |
||||
}; |
||||
Loading…
Reference in new issue