diff options
Diffstat (limited to 'libavcodec/avuienc.c')
| -rw-r--r-- | libavcodec/avuienc.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/libavcodec/avuienc.c b/libavcodec/avuienc.c new file mode 100644 index 0000000000..b219906706 --- /dev/null +++ b/libavcodec/avuienc.c @@ -0,0 +1,103 @@ +/* + * AVID Meridien encoder + * + * Copyright (c) 2012 Carl Eugen Hoyos + * + * 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 "internal.h" +#include "libavutil/intreadwrite.h" + +static av_cold int avui_encode_init(AVCodecContext *avctx) +{ + if (avctx->width != 720 || avctx->height != 486 && avctx->height != 576) { + av_log(avctx, AV_LOG_ERROR, "Only 720x486 and 720x576 are supported.\n"); + return AVERROR(EINVAL); + } + if (!(avctx->extradata = av_mallocz(144 + AV_INPUT_BUFFER_PADDING_SIZE))) + return AVERROR(ENOMEM); + avctx->extradata_size = 144; + memcpy(avctx->extradata, "\0\0\0\x18""APRGAPRG0001", 16); + if (avctx->field_order > AV_FIELD_PROGRESSIVE) { + avctx->extradata[19] = 2; + } else { + avctx->extradata[19] = 1; + } + memcpy(avctx->extradata + 24, "\0\0\0\x78""ARESARES0001""\0\0\0\x98", 20); + AV_WB32(avctx->extradata + 44, avctx->width); + AV_WB32(avctx->extradata + 48, avctx->height); + memcpy(avctx->extradata + 52, "\0\0\0\x1\0\0\0\x20\0\0\0\x2", 12); + + + return 0; +} + +static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt, + const AVFrame *pic, int *got_packet) +{ + uint8_t *dst; + int i, j, skip, ret, size, interlaced; + + interlaced = avctx->field_order > AV_FIELD_PROGRESSIVE; + + if (avctx->height == 486) { + skip = 10; + } else { + skip = 16; + } + size = 2 * avctx->width * (avctx->height + skip) + 8 * interlaced; + if ((ret = ff_alloc_packet2(avctx, pkt, size, size)) < 0) + return ret; + dst = pkt->data; + if (!interlaced) { + memset(dst, 0, avctx->width * skip); + dst += avctx->width * skip; + } + + for (i = 0; i <= interlaced; i++) { + uint8_t *src; + if (interlaced && avctx->height == 486) { + src = pic->data[0] + (1 - i) * pic->linesize[0]; + } else { + src = pic->data[0] + i * pic->linesize[0]; + } + memset(dst, 0, avctx->width * skip + 4 * i); + dst += avctx->width * skip + 4 * i; + for (j = 0; j < avctx->height; j += interlaced + 1) { + memcpy(dst, src, avctx->width * 2); + src += (interlaced + 1) * pic->linesize[0]; + dst += avctx->width * 2; + } + } + + pkt->flags |= AV_PKT_FLAG_KEY; + *got_packet = 1; + return 0; +} + +AVCodec ff_avui_encoder = { + .name = "avui", + .long_name = NULL_IF_CONFIG_SMALL("Avid Meridien Uncompressed"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_AVUI, + .init = avui_encode_init, + .encode2 = avui_encode_frame, + .capabilities = AV_CODEC_CAP_EXPERIMENTAL | AV_CODEC_CAP_INTRA_ONLY, + .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_UYVY422, AV_PIX_FMT_NONE }, +}; |