| 0,0 → 1,126 |
|---|
| /* |
| * V210 encoder |
| * |
| * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at> |
| * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> |
| * |
| * 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" |
| |
| static av_cold int encode_init(AVCodecContext *avctx) |
| { |
| if (avctx->width & 1) { |
| av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| if (avctx->bits_per_raw_sample != 10) |
| av_log(avctx, AV_LOG_WARNING, "bits per raw sample: %d != 10-bit\n", |
| avctx->bits_per_raw_sample); |
| |
| avctx->coded_frame = avcodec_alloc_frame(); |
| if (!avctx->coded_frame) |
| return AVERROR(ENOMEM); |
| |
| avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
| |
| return 0; |
| } |
| |
| static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| const AVFrame *pic, int *got_packet) |
| { |
| int aligned_width = ((avctx->width + 47) / 48) * 48; |
| int stride = aligned_width * 8 / 3; |
| int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4; |
| int h, w, ret; |
| const uint16_t *y = (const uint16_t*)pic->data[0]; |
| const uint16_t *u = (const uint16_t*)pic->data[1]; |
| const uint16_t *v = (const uint16_t*)pic->data[2]; |
| PutByteContext p; |
| |
| if ((ret = ff_alloc_packet2(avctx, pkt, avctx->height * stride)) < 0) |
| return ret; |
| |
| bytestream2_init_writer(&p, pkt->data, pkt->size); |
| |
| #define CLIP(v) av_clip(v, 4, 1019) |
| |
| #define WRITE_PIXELS(a, b, c) \ |
| do { \ |
| val = CLIP(*a++); \ |
| val |= (CLIP(*b++) << 10) | \ |
| (CLIP(*c++) << 20); \ |
| bytestream2_put_le32u(&p, val); \ |
| } while (0) |
| |
| for (h = 0; h < avctx->height; h++) { |
| uint32_t val; |
| for (w = 0; w < avctx->width - 5; w += 6) { |
| WRITE_PIXELS(u, y, v); |
| WRITE_PIXELS(y, u, y); |
| WRITE_PIXELS(v, y, u); |
| WRITE_PIXELS(y, v, y); |
| } |
| if (w < avctx->width - 1) { |
| WRITE_PIXELS(u, y, v); |
| |
| val = CLIP(*y++); |
| if (w == avctx->width - 2) |
| bytestream2_put_le32u(&p, val); |
| if (w < avctx->width - 3) { |
| val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20); |
| bytestream2_put_le32u(&p, val); |
| |
| val = CLIP(*v++) | (CLIP(*y++) << 10); |
| bytestream2_put_le32u(&p, val); |
| } |
| } |
| |
| bytestream2_set_buffer(&p, 0, line_padding); |
| |
| y += pic->linesize[0] / 2 - avctx->width; |
| u += pic->linesize[1] / 2 - avctx->width / 2; |
| v += pic->linesize[2] / 2 - avctx->width / 2; |
| } |
| |
| pkt->flags |= AV_PKT_FLAG_KEY; |
| *got_packet = 1; |
| return 0; |
| } |
| |
| static av_cold int encode_close(AVCodecContext *avctx) |
| { |
| av_freep(&avctx->coded_frame); |
| |
| return 0; |
| } |
| |
| AVCodec ff_v210_encoder = { |
| .name = "v210", |
| .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_V210, |
| .init = encode_init, |
| .encode2 = encode_frame, |
| .close = encode_close, |
| .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P10, AV_PIX_FMT_NONE }, |
| }; |