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444e9874a7
* commit 'def97856de6021965db86c25a732d78689bd6bb0': lavc: AV-prefix all codec capabilities Conflicts: cmdutils.c ffmpeg.c ffplay.c libavcodec/8svx.c libavcodec/aacenc.c libavcodec/ac3dec.c libavcodec/adpcm.c libavcodec/alac.c libavcodec/atrac3plusdec.c libavcodec/bink.c libavcodec/dnxhddec.c libavcodec/dvdec.c libavcodec/dvenc.c libavcodec/ffv1dec.c libavcodec/ffv1enc.c libavcodec/fic.c libavcodec/flacdec.c libavcodec/flacenc.c libavcodec/flvdec.c libavcodec/fraps.c libavcodec/frwu.c libavcodec/gifdec.c libavcodec/h261dec.c libavcodec/hevc.c libavcodec/iff.c libavcodec/imc.c libavcodec/libopenjpegdec.c libavcodec/libvo-aacenc.c libavcodec/libvorbisenc.c libavcodec/libvpxdec.c libavcodec/libvpxenc.c libavcodec/libx264.c libavcodec/mjpegbdec.c libavcodec/mjpegdec.c libavcodec/mpegaudiodec_float.c libavcodec/msmpeg4dec.c libavcodec/mxpegdec.c libavcodec/nvenc_h264.c libavcodec/nvenc_hevc.c libavcodec/pngdec.c libavcodec/qpeg.c libavcodec/ra288.c libavcodec/rv10.c libavcodec/s302m.c libavcodec/sp5xdec.c libavcodec/takdec.c libavcodec/tiff.c libavcodec/tta.c libavcodec/utils.c libavcodec/v210dec.c libavcodec/vp6.c libavcodec/vp9.c libavcodec/wavpack.c libavcodec/yop.c Merged-by: Michael Niedermayer <michael@niedermayer.cc>
127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
/*
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* Sunplus JPEG decoder (SP5X)
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* Copyright (c) 2003 Alex Beregszaszi
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* 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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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 FFmpeg; 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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* @file
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* Sunplus JPEG decoder (SP5X).
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*/
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#include "avcodec.h"
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#include "internal.h"
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#include "mjpeg.h"
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#include "mjpegdec.h"
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#include "sp5x.h"
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static int sp5x_decode_frame(AVCodecContext *avctx,
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void *data, int *got_frame,
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AVPacket *avpkt)
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{
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const uint8_t *buf = avpkt->data;
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int buf_size = avpkt->size;
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AVPacket avpkt_recoded;
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const int qscale = 5;
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uint8_t *recoded;
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int i = 0, j = 0;
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if (!avctx->width || !avctx->height)
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return -1;
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recoded = av_mallocz(buf_size + 1024);
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if (!recoded)
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return -1;
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/* SOI */
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recoded[j++] = 0xFF;
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recoded[j++] = 0xD8;
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memcpy(recoded+j, &sp5x_data_dqt[0], sizeof(sp5x_data_dqt));
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memcpy(recoded+j+5, &sp5x_quant_table[qscale * 2], 64);
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memcpy(recoded+j+70, &sp5x_quant_table[(qscale * 2) + 1], 64);
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j += sizeof(sp5x_data_dqt);
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memcpy(recoded+j, &sp5x_data_dht[0], sizeof(sp5x_data_dht));
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j += sizeof(sp5x_data_dht);
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memcpy(recoded+j, &sp5x_data_sof[0], sizeof(sp5x_data_sof));
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AV_WB16(recoded+j+5, avctx->coded_height);
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AV_WB16(recoded+j+7, avctx->coded_width);
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j += sizeof(sp5x_data_sof);
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memcpy(recoded+j, &sp5x_data_sos[0], sizeof(sp5x_data_sos));
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j += sizeof(sp5x_data_sos);
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if(avctx->codec_id==AV_CODEC_ID_AMV)
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for (i = 2; i < buf_size-2 && j < buf_size+1024-2; i++)
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recoded[j++] = buf[i];
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else
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for (i = 14; i < buf_size && j < buf_size+1024-3; i++)
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{
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recoded[j++] = buf[i];
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if (buf[i] == 0xff)
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recoded[j++] = 0;
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}
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/* EOI */
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recoded[j++] = 0xFF;
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recoded[j++] = 0xD9;
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av_init_packet(&avpkt_recoded);
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avpkt_recoded.data = recoded;
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avpkt_recoded.size = j;
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i = ff_mjpeg_decode_frame(avctx, data, got_frame, &avpkt_recoded);
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av_free(recoded);
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return i < 0 ? i : avpkt->size;
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}
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#if CONFIG_SP5X_DECODER
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AVCodec ff_sp5x_decoder = {
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.name = "sp5x",
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.long_name = NULL_IF_CONFIG_SMALL("Sunplus JPEG (SP5X)"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_SP5X,
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.priv_data_size = sizeof(MJpegDecodeContext),
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.init = ff_mjpeg_decode_init,
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.close = ff_mjpeg_decode_end,
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.decode = sp5x_decode_frame,
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.capabilities = AV_CODEC_CAP_DR1,
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.max_lowres = 3,
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.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
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};
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#endif
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#if CONFIG_AMV_DECODER
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AVCodec ff_amv_decoder = {
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.name = "amv",
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.long_name = NULL_IF_CONFIG_SMALL("AMV Video"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_AMV,
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.priv_data_size = sizeof(MJpegDecodeContext),
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.init = ff_mjpeg_decode_init,
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.close = ff_mjpeg_decode_end,
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.decode = sp5x_decode_frame,
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.max_lowres = 3,
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.capabilities = AV_CODEC_CAP_DR1,
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.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
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};
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#endif
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