diff options
Diffstat (limited to 'ffmpeg1/libavcodec/libutvideodec.cpp')
| -rw-r--r-- | ffmpeg1/libavcodec/libutvideodec.cpp | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/ffmpeg1/libavcodec/libutvideodec.cpp b/ffmpeg1/libavcodec/libutvideodec.cpp deleted file mode 100644 index bc491e2..0000000 --- a/ffmpeg1/libavcodec/libutvideodec.cpp +++ /dev/null @@ -1,199 +0,0 @@ -/* - * Copyright (c) 2011 Derek Buitenhuis - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; - * version 2 of the License. - * - * 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 - * General Public License for more details. - * - * You should have received a copy of the GNU 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 - */ - -/** - * @file - * Known FOURCCs: - * 'ULY0' (YCbCr 4:2:0), 'ULY2' (YCbCr 4:2:2), 'ULRG' (RGB), 'ULRA' (RGBA) - */ - -extern "C" { -#include "avcodec.h" -} - -#include "libutvideo.h" -#include "get_bits.h" - -static av_cold int utvideo_decode_init(AVCodecContext *avctx) -{ - UtVideoContext *utv = (UtVideoContext *)avctx->priv_data; - UtVideoExtra info; - int format; - int begin_ret; - - if (avctx->extradata_size != 4*4) { - av_log(avctx, AV_LOG_ERROR, "Extradata size mismatch.\n"); - return -1; - } - - /* Read extradata */ - info.version = AV_RL32(avctx->extradata); - info.original_format = AV_RL32(avctx->extradata + 4); - info.frameinfo_size = AV_RL32(avctx->extradata + 8); - info.flags = AV_RL32(avctx->extradata + 12); - - /* Pick format based on FOURCC */ - switch (avctx->codec_tag) { - case MKTAG('U', 'L', 'Y', '0'): - avctx->pix_fmt = AV_PIX_FMT_YUV420P; - format = UTVF_YV12; - break; - case MKTAG('U', 'L', 'Y', '2'): - avctx->pix_fmt = AV_PIX_FMT_YUYV422; - format = UTVF_YUY2; - break; - case MKTAG('U', 'L', 'R', 'G'): - avctx->pix_fmt = AV_PIX_FMT_BGR24; - format = UTVF_NFCC_BGR_BU; - break; - case MKTAG('U', 'L', 'R', 'A'): - avctx->pix_fmt = AV_PIX_FMT_RGB32; - format = UTVF_NFCC_BGRA_BU; - break; - default: - av_log(avctx, AV_LOG_ERROR, - "Not a Ut Video FOURCC: %X\n", avctx->codec_tag); - return -1; - } - - /* Only allocate the buffer once */ - utv->buf_size = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height); - utv->buffer = (uint8_t *)av_malloc(utv->buf_size * sizeof(uint8_t)); - - if (utv->buffer == NULL) { - av_log(avctx, AV_LOG_ERROR, "Unable to allocate output buffer.\n"); - return -1; - } - - /* Allocate the output frame */ - avctx->coded_frame = avcodec_alloc_frame(); - - /* Ut Video only supports 8-bit */ - avctx->bits_per_raw_sample = 8; - - /* Is it interlaced? */ - avctx->coded_frame->interlaced_frame = info.flags & 0x800 ? 1 : 0; - - /* Apparently Ut Video doesn't store this info... */ - avctx->coded_frame->top_field_first = 1; - - /* - * Create a Ut Video instance. Since the function wants - * an "interface name" string, pass it the name of the lib. - */ - utv->codec = CCodec::CreateInstance(UNFCC(avctx->codec_tag), "libavcodec"); - - /* Initialize Decoding */ - begin_ret = utv->codec->DecodeBegin(format, avctx->width, avctx->height, - CBGROSSWIDTH_WINDOWS, &info, sizeof(UtVideoExtra)); - - /* Check to see if the decoder initlized properly */ - if (begin_ret != 0) { - av_log(avctx, AV_LOG_ERROR, - "Could not initialize decoder: %d\n", begin_ret); - return -1; - } - - return 0; -} - -static int utvideo_decode_frame(AVCodecContext *avctx, void *data, - int *got_frame, AVPacket *avpkt) -{ - UtVideoContext *utv = (UtVideoContext *)avctx->priv_data; - AVFrame *pic = avctx->coded_frame; - int w = avctx->width, h = avctx->height; - - /* Set flags */ - pic->reference = 0; - pic->pict_type = AV_PICTURE_TYPE_I; - pic->key_frame = 1; - - /* Decode the frame */ - utv->codec->DecodeFrame(utv->buffer, avpkt->data, true); - - /* Set the output data depending on the colorspace */ - switch (avctx->pix_fmt) { - case AV_PIX_FMT_YUV420P: - pic->linesize[0] = w; - pic->linesize[1] = pic->linesize[2] = w / 2; - pic->data[0] = utv->buffer; - pic->data[2] = utv->buffer + (w * h); - pic->data[1] = pic->data[2] + (w * h / 4); - break; - case AV_PIX_FMT_YUYV422: - pic->linesize[0] = w * 2; - pic->data[0] = utv->buffer; - break; - case AV_PIX_FMT_BGR24: - case AV_PIX_FMT_RGB32: - /* Make the linesize negative, since Ut Video uses bottom-up BGR */ - pic->linesize[0] = -1 * w * (avctx->pix_fmt == AV_PIX_FMT_BGR24 ? 3 : 4); - pic->data[0] = utv->buffer + utv->buf_size + pic->linesize[0]; - break; - } - - *got_frame = 1; - *(AVFrame *)data = *pic; - - return avpkt->size; -} - -static av_cold int utvideo_decode_close(AVCodecContext *avctx) -{ - UtVideoContext *utv = (UtVideoContext *)avctx->priv_data; - - /* Free output */ - av_freep(&avctx->coded_frame); - av_freep(&utv->buffer); - - /* Finish decoding and clean up the instance */ - utv->codec->DecodeEnd(); - CCodec::DeleteInstance(utv->codec); - - return 0; -} - -AVCodec ff_libutvideo_decoder = { - "libutvideo", - NULL_IF_CONFIG_SMALL("Ut Video"), - AVMEDIA_TYPE_VIDEO, - AV_CODEC_ID_UTVIDEO, - 0, //capabilities - NULL, //supported_framerates - NULL, //pix_fmts - NULL, //supported_samplerates - NULL, //sample_fmts - NULL, //channel_layouts - 0, //max_lowres - NULL, //priv_class - NULL, //profiles - sizeof(UtVideoContext), - NULL, //next - NULL, //init_thread_copy - NULL, //update_thread_context - NULL, //defaults - NULL, //init_static_data - utvideo_decode_init, - NULL, //encode - NULL, //encode2 - utvideo_decode_frame, - utvideo_decode_close, -}; |