| /* |
| * R210 decoder |
| * |
| * Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de> |
| * |
| * 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 "libavutil/bswap.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==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 = { |
| "r210", |
| AVMEDIA_TYPE_VIDEO, |
| CODEC_ID_R210, |
| 0, |
| decode_init, |
| NULL, |
| decode_close, |
| decode_frame, |
| CODEC_CAP_DR1, |
| .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"), |
| }; |
| #endif |
| #if CONFIG_R10K_DECODER |
| AVCodec ff_r10k_decoder = { |
| "r10k", |
| AVMEDIA_TYPE_VIDEO, |
| CODEC_ID_R10K, |
| 0, |
| decode_init, |
| NULL, |
| decode_close, |
| decode_frame, |
| CODEC_CAP_DR1, |
| .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"), |
| }; |
| #endif |