X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fsp5xdec.c;h=253c211709a271f44e677259e04bae029b7d4afe;hb=44dc9c6af0377faf2a99889d1f949e32a1102e84;hp=754926a4cef8a11aebf7bf530c0e626e4221e974;hpb=ba87f0801d77c21eb1e4891ca1f846500bbb0939;p=ffmpeg diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c index 754926a4cef..253c211709a 100644 --- a/libavcodec/sp5xdec.c +++ b/libavcodec/sp5xdec.c @@ -2,20 +2,20 @@ * Sunplus JPEG decoder (SP5X) * Copyright (c) 2003 Alex Beregszaszi * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * 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. * - * FFmpeg is distributed in the hope that it will be useful, + * 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 FFmpeg; if not, write to the Free Software + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -37,20 +37,13 @@ static int sp5x_decode_frame(AVCodecContext *avctx, const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; AVPacket avpkt_recoded; -#if 0 - MJpegDecodeContext *s = avctx->priv_data; -#endif const int qscale = 5; - const uint8_t *buf_ptr; uint8_t *recoded; int i = 0, j = 0; if (!avctx->width || !avctx->height) return -1; - buf_ptr = buf; - -#if 1 recoded = av_mallocz(buf_size + 1024); if (!recoded) return -1; @@ -90,7 +83,6 @@ static int sp5x_decode_frame(AVCodecContext *avctx, recoded[j++] = 0xFF; recoded[j++] = 0xD9; - avctx->flags &= ~CODEC_FLAG_EMU_EDGE; av_init_packet(&avpkt_recoded); avpkt_recoded.data = recoded; avpkt_recoded.size = j; @@ -98,124 +90,28 @@ static int sp5x_decode_frame(AVCodecContext *avctx, av_free(recoded); -#else - /* SOF */ - s->bits = 8; - s->width = avctx->coded_width; - s->height = avctx->coded_height; - s->nb_components = 3; - s->component_id[0] = 0; - s->h_count[0] = 2; - s->v_count[0] = 2; - s->quant_index[0] = 0; - s->component_id[1] = 1; - s->h_count[1] = 1; - s->v_count[1] = 1; - s->quant_index[1] = 1; - s->component_id[2] = 2; - s->h_count[2] = 1; - s->v_count[2] = 1; - s->quant_index[2] = 1; - s->h_max = 2; - s->v_max = 2; - - s->qscale_table = av_mallocz((s->width+15)/16); - avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV420P : PIX_FMT_YUVJ420; - s->interlaced = 0; - - s->picture.reference = 0; - if (avctx->get_buffer(avctx, &s->picture) < 0) - { - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); - return -1; - } - - s->picture.pict_type = FF_I_TYPE; - s->picture.key_frame = 1; - - for (i = 0; i < 3; i++) - s->linesize[i] = s->picture.linesize[i] << s->interlaced; - - /* DQT */ - for (i = 0; i < 64; i++) - { - j = s->scantable.permutated[i]; - s->quant_matrixes[0][j] = sp5x_quant_table[(qscale * 2) + i]; - } - s->qscale[0] = FFMAX( - s->quant_matrixes[0][s->scantable.permutated[1]], - s->quant_matrixes[0][s->scantable.permutated[8]]) >> 1; - - for (i = 0; i < 64; i++) - { - j = s->scantable.permutated[i]; - s->quant_matrixes[1][j] = sp5x_quant_table[(qscale * 2) + 1 + i]; - } - s->qscale[1] = FFMAX( - s->quant_matrixes[1][s->scantable.permutated[1]], - s->quant_matrixes[1][s->scantable.permutated[8]]) >> 1; - - /* DHT */ - - /* SOS */ - s->comp_index[0] = 0; - s->nb_blocks[0] = s->h_count[0] * s->v_count[0]; - s->h_scount[0] = s->h_count[0]; - s->v_scount[0] = s->v_count[0]; - s->dc_index[0] = 0; - s->ac_index[0] = 0; - - s->comp_index[1] = 1; - s->nb_blocks[1] = s->h_count[1] * s->v_count[1]; - s->h_scount[1] = s->h_count[1]; - s->v_scount[1] = s->v_count[1]; - s->dc_index[1] = 1; - s->ac_index[1] = 1; - - s->comp_index[2] = 2; - s->nb_blocks[2] = s->h_count[2] * s->v_count[2]; - s->h_scount[2] = s->h_count[2]; - s->v_scount[2] = s->v_count[2]; - s->dc_index[2] = 1; - s->ac_index[2] = 1; - - for (i = 0; i < 3; i++) - s->last_dc[i] = 1024; - - s->mb_width = (s->width * s->h_max * 8 -1) / (s->h_max * 8); - s->mb_height = (s->height * s->v_max * 8 -1) / (s->v_max * 8); - - init_get_bits(&s->gb, buf+14, (buf_size-14)*8); - - return mjpeg_decode_scan(s); -#endif - return i; } -AVCodec sp5x_decoder = { - "sp5x", - AVMEDIA_TYPE_VIDEO, - CODEC_ID_SP5X, - sizeof(MJpegDecodeContext), - ff_mjpeg_decode_init, - NULL, - ff_mjpeg_decode_end, - sp5x_decode_frame, - CODEC_CAP_DR1, - NULL, - .long_name = NULL_IF_CONFIG_SMALL("Sunplus JPEG (SP5X)"), +AVCodec ff_sp5x_decoder = { + .name = "sp5x", + .type = AVMEDIA_TYPE_VIDEO, + .id = 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, + .long_name = NULL_IF_CONFIG_SMALL("Sunplus JPEG (SP5X)"), }; -AVCodec amv_decoder = { - "amv", - AVMEDIA_TYPE_VIDEO, - CODEC_ID_AMV, - sizeof(MJpegDecodeContext), - ff_mjpeg_decode_init, - NULL, - ff_mjpeg_decode_end, - sp5x_decode_frame, - CODEC_CAP_DR1, - .long_name = NULL_IF_CONFIG_SMALL("AMV Video"), +AVCodec ff_amv_decoder = { + .name = "amv", + .type = AVMEDIA_TYPE_VIDEO, + .id = 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"), };