/* * 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 "libavcodec/bytestream.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 -1; } if (avctx->pix_fmt != PIX_FMT_YUV422P16) { av_log(avctx, AV_LOG_ERROR, "v210 needs YUV422P16\n"); return -1; } 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(); avctx->coded_frame->key_frame = 1; avctx->coded_frame->pict_type = FF_I_TYPE; return 0; } static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data) { const AVFrame *pic = data; int aligned_width = ((avctx->width + 47) / 48) * 48; int stride = aligned_width * 8 / 3; int h, w; 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]; uint8_t *p = buf; uint8_t *pdst = buf; if (buf_size < aligned_width * avctx->height * 8 / 3) { av_log(avctx, AV_LOG_ERROR, "output buffer too small\n"); return -1; } #define WRITE_PIXELS(a, b, c) \ do { \ val = (*a++ >> 6) | \ ((*b++ & 0xFFC0) << 4); \ val|= (*c++ & 0xFFC0) << 14; \ bytestream_put_le32(&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 = *y++ >> 6; if (w == avctx->width - 2) bytestream_put_le32(&p, val); } if (w < avctx->width - 3) { val |=((*u++ & 0xFFC0) << 4) | ((*y++ & 0xFFC0) << 14); bytestream_put_le32(&p, val); val = (*v++ >> 6) | (*y++ & 0xFFC0) << 4; bytestream_put_le32(&p, val); } pdst += stride; memset(p, 0, pdst - p); p = pdst; y += pic->linesize[0] / 2 - avctx->width; u += pic->linesize[1] / 2 - avctx->width / 2; v += pic->linesize[2] / 2 - avctx->width / 2; } return p - buf; } static av_cold int encode_close(AVCodecContext *avctx) { av_freep(&avctx->coded_frame); return 0; } AVCodec v210_encoder = { "v210", AVMEDIA_TYPE_VIDEO, CODEC_ID_V210, 0, encode_init, encode_frame, encode_close, .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV422P16, PIX_FMT_NONE}, .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"), };