/* * R210 decoder * * Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de> * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "avcodec.h" #include "libavutil/bswap.h" #include "libavutil/common.h" static av_cold int decode_init(AVCodecContext *avctx) { avctx->pix_fmt = PIX_FMT_RGB48; avctx->bits_per_raw_sample = 10; avctx->coded_frame = avcodec_alloc_frame(); return 0; } static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) { int h, w; AVFrame *pic = avctx->coded_frame; const uint32_t *src = (const uint32_t *)avpkt->data; int aligned_width = FFALIGN(avctx->width, 64); uint8_t *dst_line; if (pic->data[0]) avctx->release_buffer(avctx, pic); if (avpkt->size < 4 * aligned_width * avctx->height) { av_log(avctx, AV_LOG_ERROR, "packet too small\n"); return -1; } pic->reference = 0; if (avctx->get_buffer(avctx, pic) < 0) return -1; pic->pict_type = AV_PICTURE_TYPE_I; pic->key_frame = 1; dst_line = pic->data[0]; for (h = 0; h < avctx->height; h++) { uint16_t *dst = (uint16_t *)dst_line; for (w = 0; w < avctx->width; w++) { uint32_t pixel = av_be2ne32(*src++); uint16_t r, g, b; if (avctx->codec_id==AV_CODEC_ID_R210) { b = pixel << 6; g = (pixel >> 4) & 0xffc0; r = (pixel >> 14) & 0xffc0; } else { b = pixel << 4; g = (pixel >> 6) & 0xffc0; r = (pixel >> 16) & 0xffc0; } *dst++ = r | (r >> 10); *dst++ = g | (g >> 10); *dst++ = b | (b >> 10); } src += aligned_width - avctx->width; dst_line += pic->linesize[0]; } *data_size = sizeof(AVFrame); *(AVFrame*)data = *avctx->coded_frame; return avpkt->size; } static av_cold int decode_close(AVCodecContext *avctx) { AVFrame *pic = avctx->coded_frame; if (pic->data[0]) avctx->release_buffer(avctx, pic); av_freep(&avctx->coded_frame); return 0; } #if CONFIG_R210_DECODER AVCodec ff_r210_decoder = { .name = "r210", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_R210, .init = decode_init, .close = decode_close, .decode = decode_frame, .capabilities = CODEC_CAP_DR1, .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"), }; #endif #if CONFIG_R10K_DECODER AVCodec ff_r10k_decoder = { .name = "r10k", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_R10K, .init = decode_init, .close = decode_close, .decode = decode_frame, .capabilities = CODEC_CAP_DR1, .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"), }; #endif