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Diffstat (limited to 'src/libffmpeg/libavcodec/8bps.c')
| -rw-r--r-- | src/libffmpeg/libavcodec/8bps.c | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/src/libffmpeg/libavcodec/8bps.c b/src/libffmpeg/libavcodec/8bps.c deleted file mode 100644 index 297465043..000000000 --- a/src/libffmpeg/libavcodec/8bps.c +++ /dev/null @@ -1,236 +0,0 @@ -/* - * Quicktime Planar RGB (8BPS) Video Decoder - * Copyright (C) 2003 Roberto Togni - * - * 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 8bps.c - * QT 8BPS Video Decoder by Roberto Togni <rtogni at bresciaonline dot it> - * For more information about the 8BPS format, visit: - * http://www.pcisys.net/~melanson/codecs/ - * - * Supports: PAL8 (RGB 8bpp, paletted) - * : BGR24 (RGB 24bpp) (can also output it as RGBA32) - * : RGBA32 (RGB 32bpp, 4th plane is probably alpha and it's ignored) - * - */ - -#include <stdio.h> -#include <stdlib.h> - -#include "common.h" -#include "avcodec.h" - - -static const enum PixelFormat pixfmt_rgb24[] = {PIX_FMT_BGR24, PIX_FMT_RGBA32, -1}; - -/* - * Decoder context - */ -typedef struct EightBpsContext { - - AVCodecContext *avctx; - AVFrame pic; - - unsigned char planes; - unsigned char planemap[4]; -} EightBpsContext; - - -/* - * - * Decode a frame - * - */ -static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size) -{ - EightBpsContext * const c = (EightBpsContext *)avctx->priv_data; - unsigned char *encoded = (unsigned char *)buf; - unsigned char *pixptr, *pixptr_end; - unsigned int height = avctx->height; // Real image height - unsigned int dlen, p, row; - unsigned char *lp, *dp; - unsigned char count; - unsigned int px_inc; - unsigned int planes = c->planes; - unsigned char *planemap = c->planemap; - - if(c->pic.data[0]) - avctx->release_buffer(avctx, &c->pic); - - c->pic.reference = 0; - c->pic.buffer_hints = FF_BUFFER_HINTS_VALID; - if(avctx->get_buffer(avctx, &c->pic) < 0){ - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); - return -1; - } - - /* Set data pointer after line lengths */ - dp = encoded + planes * (height << 1); - - /* Ignore alpha plane, don't know what to do with it */ - if (planes == 4) - planes--; - - px_inc = planes + (avctx->pix_fmt == PIX_FMT_RGBA32); - - for (p = 0; p < planes; p++) { - /* Lines length pointer for this plane */ - lp = encoded + p * (height << 1); - - /* Decode a plane */ - for(row = 0; row < height; row++) { - pixptr = c->pic.data[0] + row * c->pic.linesize[0] + planemap[p]; - pixptr_end = pixptr + c->pic.linesize[0]; - dlen = be2me_16(*(unsigned short *)(lp+row*2)); - /* Decode a row of this plane */ - while(dlen > 0) { - if(dp + 1 >= buf+buf_size) return -1; - if ((count = *dp++) <= 127) { - count++; - dlen -= count + 1; - if (pixptr + count * px_inc > pixptr_end) - break; - if(dp + count > buf+buf_size) return -1; - while(count--) { - *pixptr = *dp++; - pixptr += px_inc; - } - } else { - count = 257 - count; - if (pixptr + count * px_inc > pixptr_end) - break; - while(count--) { - *pixptr = *dp; - pixptr += px_inc; - } - dp++; - dlen -= 2; - } - } - } - } - - if (avctx->palctrl) { - memcpy (c->pic.data[1], avctx->palctrl->palette, AVPALETTE_SIZE); - if (avctx->palctrl->palette_changed) { - c->pic.palette_has_changed = 1; - avctx->palctrl->palette_changed = 0; - } else - c->pic.palette_has_changed = 0; - } - - *data_size = sizeof(AVFrame); - *(AVFrame*)data = c->pic; - - /* always report that the buffer was completely consumed */ - return buf_size; -} - - -/* - * - * Init 8BPS decoder - * - */ -static int decode_init(AVCodecContext *avctx) -{ - EightBpsContext * const c = (EightBpsContext *)avctx->priv_data; - - c->avctx = avctx; - avctx->has_b_frames = 0; - - c->pic.data[0] = NULL; - - if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) { - return 1; - } - - switch (avctx->bits_per_sample) { - case 8: - avctx->pix_fmt = PIX_FMT_PAL8; - c->planes = 1; - c->planemap[0] = 0; // 1st plane is palette indexes - if (avctx->palctrl == NULL) { - av_log(avctx, AV_LOG_ERROR, "Error: PAL8 format but no palette from demuxer.\n"); - return -1; - } - break; - case 24: - avctx->pix_fmt = avctx->get_format(avctx, pixfmt_rgb24); - c->planes = 3; - c->planemap[0] = 2; // 1st plane is red - c->planemap[1] = 1; // 2nd plane is green - c->planemap[2] = 0; // 3rd plane is blue - break; - case 32: - avctx->pix_fmt = PIX_FMT_RGBA32; - c->planes = 4; -#ifdef WORDS_BIGENDIAN - c->planemap[0] = 1; // 1st plane is red - c->planemap[1] = 2; // 2nd plane is green - c->planemap[2] = 3; // 3rd plane is blue - c->planemap[3] = 0; // 4th plane is alpha??? -#else - c->planemap[0] = 2; // 1st plane is red - c->planemap[1] = 1; // 2nd plane is green - c->planemap[2] = 0; // 3rd plane is blue - c->planemap[3] = 3; // 4th plane is alpha??? -#endif - break; - default: - av_log(avctx, AV_LOG_ERROR, "Error: Unsupported color depth: %u.\n", avctx->bits_per_sample); - return -1; - } - - return 0; -} - - - - -/* - * - * Uninit 8BPS decoder - * - */ -static int decode_end(AVCodecContext *avctx) -{ - EightBpsContext * const c = (EightBpsContext *)avctx->priv_data; - - if (c->pic.data[0]) - avctx->release_buffer(avctx, &c->pic); - - return 0; -} - - - -AVCodec eightbps_decoder = { - "8bps", - CODEC_TYPE_VIDEO, - CODEC_ID_8BPS, - sizeof(EightBpsContext), - decode_init, - NULL, - decode_end, - decode_frame, - CODEC_CAP_DR1, -}; |