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122 lines
3.6 KiB
122 lines
3.6 KiB
/* |
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* R210 decoder |
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* |
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* Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avcodec.h" |
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#include "libavutil/bswap.h" |
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static av_cold int decode_init(AVCodecContext *avctx) |
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{ |
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avctx->pix_fmt = PIX_FMT_RGB48; |
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avctx->bits_per_raw_sample = 10; |
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avctx->coded_frame = avcodec_alloc_frame(); |
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return 0; |
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} |
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static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, |
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AVPacket *avpkt) |
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{ |
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int h, w; |
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AVFrame *pic = avctx->coded_frame; |
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const uint32_t *src = (const uint32_t *)avpkt->data; |
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int aligned_width = FFALIGN(avctx->width, 64); |
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uint8_t *dst_line; |
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if (pic->data[0]) |
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avctx->release_buffer(avctx, pic); |
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if (avpkt->size < 4 * aligned_width * avctx->height) { |
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av_log(avctx, AV_LOG_ERROR, "packet too small\n"); |
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return -1; |
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} |
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pic->reference = 0; |
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if (avctx->get_buffer(avctx, pic) < 0) |
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return -1; |
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pic->pict_type = AV_PICTURE_TYPE_I; |
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pic->key_frame = 1; |
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dst_line = pic->data[0]; |
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for (h = 0; h < avctx->height; h++) { |
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uint16_t *dst = (uint16_t *)dst_line; |
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for (w = 0; w < avctx->width; w++) { |
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uint32_t pixel = av_be2ne32(*src++); |
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uint16_t r, g, b; |
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if (avctx->codec_id==CODEC_ID_R210) { |
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b = pixel << 6; |
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g = (pixel >> 4) & 0xffc0; |
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r = (pixel >> 14) & 0xffc0; |
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} else { |
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b = pixel << 4; |
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g = (pixel >> 6) & 0xffc0; |
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r = (pixel >> 16) & 0xffc0; |
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} |
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*dst++ = r | (r >> 10); |
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*dst++ = g | (g >> 10); |
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*dst++ = b | (b >> 10); |
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} |
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src += aligned_width - avctx->width; |
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dst_line += pic->linesize[0]; |
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} |
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*data_size = sizeof(AVFrame); |
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*(AVFrame*)data = *avctx->coded_frame; |
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return avpkt->size; |
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} |
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static av_cold int decode_close(AVCodecContext *avctx) |
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{ |
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AVFrame *pic = avctx->coded_frame; |
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if (pic->data[0]) |
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avctx->release_buffer(avctx, pic); |
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av_freep(&avctx->coded_frame); |
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return 0; |
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} |
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#if CONFIG_R210_DECODER |
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AVCodec ff_r210_decoder = { |
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.name = "r210", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = CODEC_ID_R210, |
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.init = decode_init, |
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.close = decode_close, |
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.decode = decode_frame, |
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.capabilities = CODEC_CAP_DR1, |
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"), |
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}; |
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#endif |
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#if CONFIG_R10K_DECODER |
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AVCodec ff_r10k_decoder = { |
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.name = "r10k", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = CODEC_ID_R10K, |
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.init = decode_init, |
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.close = decode_close, |
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.decode = decode_frame, |
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.capabilities = CODEC_CAP_DR1, |
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.long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"), |
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}; |
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#endif
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