diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/rawdec.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/rawdec.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/contrib/ffmpeg/libavcodec/rawdec.c b/contrib/ffmpeg/libavcodec/rawdec.c deleted file mode 100644 index 11d2a185e..000000000 --- a/contrib/ffmpeg/libavcodec/rawdec.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Raw Video Decoder - * Copyright (c) 2001 Fabrice Bellard. - * - * 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 - */ - -/** - * @file rawdec.c - * Raw Video Decoder - */ - -#include "avcodec.h" -#include "raw.h" - -typedef struct RawVideoContext { - unsigned char * buffer; /* block of memory for holding one frame */ - int length; /* number of bytes in buffer */ - AVFrame pic; ///< AVCodecContext.coded_frame -} RawVideoContext; - -static const PixelFormatTag pixelFormatBpsAVI[] = { - { PIX_FMT_PAL8, 4 }, - { PIX_FMT_PAL8, 8 }, - { PIX_FMT_RGB555, 15 }, - { PIX_FMT_RGB555, 16 }, - { PIX_FMT_BGR24, 24 }, - { PIX_FMT_RGB32, 32 }, - { -1, 0 }, -}; - -static const PixelFormatTag pixelFormatBpsMOV[] = { - /* FIXME fix swscaler to support those */ - /* http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/chapter_4_section_2.html */ - { PIX_FMT_PAL8, 4 }, - { PIX_FMT_PAL8, 8 }, - { PIX_FMT_BGR555, 16 }, - { PIX_FMT_RGB24, 24 }, - { PIX_FMT_BGR32_1, 32 }, - { -1, 0 }, -}; - -static int findPixelFormat(const PixelFormatTag *tags, unsigned int fourcc) -{ - while (tags->pix_fmt >= 0) { - if (tags->fourcc == fourcc) - return tags->pix_fmt; - tags++; - } - return PIX_FMT_YUV420P; -} - -static int raw_init_decoder(AVCodecContext *avctx) -{ - RawVideoContext *context = avctx->priv_data; - - if (avctx->codec_tag == MKTAG('r','a','w',' ')) - avctx->pix_fmt = findPixelFormat(pixelFormatBpsMOV, avctx->bits_per_sample); - else if (avctx->codec_tag) - avctx->pix_fmt = findPixelFormat(ff_raw_pixelFormatTags, avctx->codec_tag); - else if (avctx->bits_per_sample) - avctx->pix_fmt = findPixelFormat(pixelFormatBpsAVI, avctx->bits_per_sample); - - context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height); - context->buffer = av_malloc(context->length); - context->pic.pict_type = FF_I_TYPE; - context->pic.key_frame = 1; - - avctx->coded_frame= &context->pic; - - if (!context->buffer) - return -1; - - return 0; -} - -static void flip(AVCodecContext *avctx, AVPicture * picture){ - if(!avctx->codec_tag && avctx->bits_per_sample && picture->linesize[2]==0){ - picture->data[0] += picture->linesize[0] * (avctx->height-1); - picture->linesize[0] *= -1; - } -} - -static int raw_decode(AVCodecContext *avctx, - void *data, int *data_size, - const uint8_t *buf, int buf_size) -{ - RawVideoContext *context = avctx->priv_data; - - AVFrame * frame = (AVFrame *) data; - AVPicture * picture = (AVPicture *) data; - - frame->interlaced_frame = avctx->coded_frame->interlaced_frame; - frame->top_field_first = avctx->coded_frame->top_field_first; - - //4bpp raw in avi and mov (yes this is ugly ...) - if(avctx->bits_per_sample == 4 && avctx->pix_fmt==PIX_FMT_PAL8 && - (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))){ - int i; - for(i=256*2; i+1 < context->length>>1; i++){ - context->buffer[2*i+0]= buf[i-256*2]>>4; - context->buffer[2*i+1]= buf[i-256*2]&15; - } - buf= context->buffer + 256*4; - buf_size= context->length - 256*4; - } - - if(buf_size < context->length - (avctx->pix_fmt==PIX_FMT_PAL8 ? 256*4 : 0)) - return -1; - - avpicture_fill(picture, buf, avctx->pix_fmt, avctx->width, avctx->height); - if(avctx->pix_fmt==PIX_FMT_PAL8 && buf_size < context->length){ - frame->data[1]= context->buffer; - } - if (avctx->palctrl && avctx->palctrl->palette_changed) { - memcpy(frame->data[1], avctx->palctrl->palette, AVPALETTE_SIZE); - avctx->palctrl->palette_changed = 0; - } - - flip(avctx, picture); - - if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2')) - { - // swap fields - unsigned char *tmp = picture->data[1]; - picture->data[1] = picture->data[2]; - picture->data[2] = tmp; - } - - *data_size = sizeof(AVPicture); - return buf_size; -} - -static int raw_close_decoder(AVCodecContext *avctx) -{ - RawVideoContext *context = avctx->priv_data; - - av_freep(&context->buffer); - return 0; -} - -AVCodec rawvideo_decoder = { - "rawvideo", - CODEC_TYPE_VIDEO, - CODEC_ID_RAWVIDEO, - sizeof(RawVideoContext), - raw_init_decoder, - NULL, - raw_close_decoder, - raw_decode, -}; |