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* Sunplus JPEG decoder (SP5X)
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* Copyright (c) 2003 Alex Beregszaszi
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* This file is part of Libav.
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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
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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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* 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
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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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* 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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* Sunplus JPEG decoder (SP5X).
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static int sp5x_decode_frame(AVCodecContext *avctx,
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void *data, int *data_size,
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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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if (!avctx->width || !avctx->height)
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recoded = av_mallocz(buf_size + 1024);
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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==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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for (i = 14; i < buf_size && j < buf_size+1024-2; i++)
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recoded[j++] = buf[i];
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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, data_size, &avpkt_recoded);
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AVCodec ff_sp5x_decoder = {
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sizeof(MJpegDecodeContext),
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ff_mjpeg_decode_init,
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.long_name = NULL_IF_CONFIG_SMALL("Sunplus JPEG (SP5X)"),
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AVCodec ff_amv_decoder = {
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sizeof(MJpegDecodeContext),
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ff_mjpeg_decode_init,
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.long_name = NULL_IF_CONFIG_SMALL("AMV Video"),