diff options
Diffstat (limited to 'ffmpeg/libavcodec/frwu.c')
| -rw-r--r-- | ffmpeg/libavcodec/frwu.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/ffmpeg/libavcodec/frwu.c b/ffmpeg/libavcodec/frwu.c deleted file mode 100644 index c778dbd..0000000 --- a/ffmpeg/libavcodec/frwu.c +++ /dev/null @@ -1,128 +0,0 @@ -/* - * Forward Uncompressed - * - * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de> - * - * 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 - */ - -#include "avcodec.h" -#include "bytestream.h" -#include "internal.h" -#include "libavutil/opt.h" - -typedef struct { - AVClass *av_class; - int change_field_order; -} FRWUContext; - -static av_cold int decode_init(AVCodecContext *avctx) -{ - if (avctx->width & 1) { - av_log(avctx, AV_LOG_ERROR, "frwu needs even width\n"); - return AVERROR(EINVAL); - } - avctx->pix_fmt = AV_PIX_FMT_UYVY422; - - return 0; -} - -static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, - AVPacket *avpkt) -{ - FRWUContext *s = avctx->priv_data; - int field, ret; - AVFrame *pic = data; - const uint8_t *buf = avpkt->data; - const uint8_t *buf_end = buf + avpkt->size; - - if (avpkt->size < avctx->width * 2 * avctx->height + 4 + 2*8) { - av_log(avctx, AV_LOG_ERROR, "Packet is too small.\n"); - return AVERROR_INVALIDDATA; - } - if (bytestream_get_le32(&buf) != MKTAG('F', 'R', 'W', '1')) { - av_log(avctx, AV_LOG_ERROR, "incorrect marker\n"); - return AVERROR_INVALIDDATA; - } - - if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) - return ret; - - pic->pict_type = AV_PICTURE_TYPE_I; - pic->key_frame = 1; - - for (field = 0; field < 2; field++) { - int i; - int field_h = (avctx->height + !field) >> 1; - int field_size, min_field_size = avctx->width * 2 * field_h; - uint8_t *dst = pic->data[0]; - if (buf_end - buf < 8) - return AVERROR_INVALIDDATA; - buf += 4; // flags? 0x80 == bottom field maybe? - field_size = bytestream_get_le32(&buf); - if (field_size < min_field_size) { - av_log(avctx, AV_LOG_ERROR, "Field size %i is too small (required %i)\n", field_size, min_field_size); - return AVERROR_INVALIDDATA; - } - if (buf_end - buf < field_size) { - av_log(avctx, AV_LOG_ERROR, "Packet is too small, need %i, have %i\n", field_size, (int)(buf_end - buf)); - return AVERROR_INVALIDDATA; - } - if (field ^ s->change_field_order) { - dst += pic->linesize[0]; - } else if (s->change_field_order) { - dst += 2 * pic->linesize[0]; - } - for (i = 0; i < field_h; i++) { - if (s->change_field_order && field && i == field_h - 1) - dst = pic->data[0]; - memcpy(dst, buf, avctx->width * 2); - buf += avctx->width * 2; - dst += pic->linesize[0] << 1; - } - buf += field_size - min_field_size; - } - - *got_frame = 1; - - return avpkt->size; -} - -static const AVOption frwu_options[] = { - {"change_field_order", "Change field order", offsetof(FRWUContext, change_field_order), FF_OPT_TYPE_INT, - {.i64 = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM}, - {NULL} -}; - -static const AVClass frwu_class = { - .class_name = "frwu Decoder", - .item_name = av_default_item_name, - .option = frwu_options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVCodec ff_frwu_decoder = { - .name = "frwu", - .long_name = NULL_IF_CONFIG_SMALL("Forward Uncompressed"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_FRWU, - .priv_data_size = sizeof(FRWUContext), - .init = decode_init, - .decode = decode_frame, - .capabilities = CODEC_CAP_DR1, - .priv_class = &frwu_class, -}; |