diff options
Diffstat (limited to 'ffmpeg1/libavcodec/sp5xdec.c')
| -rw-r--r-- | ffmpeg1/libavcodec/sp5xdec.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/ffmpeg1/libavcodec/sp5xdec.c b/ffmpeg1/libavcodec/sp5xdec.c deleted file mode 100644 index b083015..0000000 --- a/ffmpeg1/libavcodec/sp5xdec.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * Sunplus JPEG decoder (SP5X) - * Copyright (c) 2003 Alex Beregszaszi - * - * 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 - * Sunplus JPEG decoder (SP5X). - */ - -#include "avcodec.h" -#include "mjpeg.h" -#include "mjpegdec.h" -#include "sp5x.h" - - -static int sp5x_decode_frame(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) -{ - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - AVPacket avpkt_recoded; - const int qscale = 5; - uint8_t *recoded; - int i = 0, j = 0; - - if (!avctx->width || !avctx->height) - return -1; - - recoded = av_mallocz(buf_size + 1024); - if (!recoded) - return -1; - - /* SOI */ - recoded[j++] = 0xFF; - recoded[j++] = 0xD8; - - memcpy(recoded+j, &sp5x_data_dqt[0], sizeof(sp5x_data_dqt)); - memcpy(recoded+j+5, &sp5x_quant_table[qscale * 2], 64); - memcpy(recoded+j+70, &sp5x_quant_table[(qscale * 2) + 1], 64); - j += sizeof(sp5x_data_dqt); - - memcpy(recoded+j, &sp5x_data_dht[0], sizeof(sp5x_data_dht)); - j += sizeof(sp5x_data_dht); - - memcpy(recoded+j, &sp5x_data_sof[0], sizeof(sp5x_data_sof)); - AV_WB16(recoded+j+5, avctx->coded_height); - AV_WB16(recoded+j+7, avctx->coded_width); - j += sizeof(sp5x_data_sof); - - memcpy(recoded+j, &sp5x_data_sos[0], sizeof(sp5x_data_sos)); - j += sizeof(sp5x_data_sos); - - if(avctx->codec_id==AV_CODEC_ID_AMV) - for (i = 2; i < buf_size-2 && j < buf_size+1024-2; i++) - recoded[j++] = buf[i]; - else - for (i = 14; i < buf_size && j < buf_size+1024-3; i++) - { - recoded[j++] = buf[i]; - if (buf[i] == 0xff) - recoded[j++] = 0; - } - - /* EOI */ - recoded[j++] = 0xFF; - recoded[j++] = 0xD9; - - av_init_packet(&avpkt_recoded); - avpkt_recoded.data = recoded; - avpkt_recoded.size = j; - i = ff_mjpeg_decode_frame(avctx, data, got_frame, &avpkt_recoded); - - av_free(recoded); - - return i < 0 ? i : avpkt->size; -} - -#if CONFIG_SP5X_DECODER -AVCodec ff_sp5x_decoder = { - .name = "sp5x", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_SP5X, - .priv_data_size = sizeof(MJpegDecodeContext), - .init = ff_mjpeg_decode_init, - .close = ff_mjpeg_decode_end, - .decode = sp5x_decode_frame, - .capabilities = CODEC_CAP_DR1, - .max_lowres = 3, - .long_name = NULL_IF_CONFIG_SMALL("Sunplus JPEG (SP5X)"), -}; -#endif -#if CONFIG_AMV_DECODER -AVCodec ff_amv_decoder = { - .name = "amv", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_AMV, - .priv_data_size = sizeof(MJpegDecodeContext), - .init = ff_mjpeg_decode_init, - .close = ff_mjpeg_decode_end, - .decode = sp5x_decode_frame, - .long_name = NULL_IF_CONFIG_SMALL("AMV Video"), -}; -#endif |
