| 0,0 → 1,112 |
|---|
| /* |
| * 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" |
| |
| static av_cold int avui_encode_init(AVCodecContext *avctx) |
| { |
| avctx->coded_frame = avcodec_alloc_frame(); |
| |
| 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->coded_frame) { |
| av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); |
| return AVERROR(ENOMEM); |
| } |
| if (!(avctx->extradata = av_mallocz(24 + FF_INPUT_BUFFER_PADDING_SIZE))) |
| return AVERROR(ENOMEM); |
| avctx->extradata_size = 24; |
| 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; |
| } |
| |
| |
| return 0; |
| } |
| |
| static int avui_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| const AVFrame *pic, int *got_packet) |
| { |
| uint8_t *dst, *src = pic->data[0]; |
| 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)) < 0) |
| return ret; |
| dst = pkt->data; |
| if (!interlaced) { |
| dst += avctx->width * skip; |
| } |
| |
| avctx->coded_frame->key_frame = 1; |
| avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
| |
| for (i = 0; i <= interlaced; i++) { |
| if (interlaced && avctx->height == 486) { |
| src = pic->data[0] + (1 - i) * pic->linesize[0]; |
| } else { |
| src = pic->data[0] + i * pic->linesize[0]; |
| } |
| 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; |
| } |
| |
| static av_cold int avui_encode_close(AVCodecContext *avctx) |
| { |
| av_freep(&avctx->coded_frame); |
| |
| 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, |
| .close = avui_encode_close, |
| .capabilities = CODEC_CAP_EXPERIMENTAL, |
| .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_UYVY422, AV_PIX_FMT_NONE }, |
| }; |