diff options
Diffstat (limited to 'ffmpeg1/libavcodec/cljr.c')
| -rw-r--r-- | ffmpeg1/libavcodec/cljr.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/ffmpeg1/libavcodec/cljr.c b/ffmpeg1/libavcodec/cljr.c deleted file mode 100644 index 2120864..0000000 --- a/ffmpeg1/libavcodec/cljr.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * Cirrus Logic AccuPak (CLJR) codec - * Copyright (c) 2003 Alex Beregszaszi - * - * 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 - * Cirrus Logic AccuPak codec. - */ - -#include "avcodec.h" -#include "libavutil/opt.h" -#include "get_bits.h" -#include "internal.h" -#include "put_bits.h" - -#if CONFIG_CLJR_DECODER -static int decode_frame(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) -{ - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - GetBitContext gb; - AVFrame * const p = data; - int x, y, ret; - - if (avctx->height <= 0 || avctx->width <= 0) { - av_log(avctx, AV_LOG_ERROR, "Invalid width or height\n"); - return AVERROR_INVALIDDATA; - } - - if (buf_size / avctx->height < avctx->width) { - av_log(avctx, AV_LOG_ERROR, - "Resolution larger than buffer size. Invalid header?\n"); - return AVERROR_INVALIDDATA; - } - - if ((ret = ff_get_buffer(avctx, p, 0)) < 0) - return ret; - p->pict_type = AV_PICTURE_TYPE_I; - p->key_frame = 1; - - init_get_bits(&gb, buf, buf_size * 8); - - for (y = 0; y < avctx->height; y++) { - uint8_t *luma = &p->data[0][y * p->linesize[0]]; - uint8_t *cb = &p->data[1][y * p->linesize[1]]; - uint8_t *cr = &p->data[2][y * p->linesize[2]]; - for (x = 0; x < avctx->width; x += 4) { - luma[3] = (get_bits(&gb, 5)*33) >> 2; - luma[2] = (get_bits(&gb, 5)*33) >> 2; - luma[1] = (get_bits(&gb, 5)*33) >> 2; - luma[0] = (get_bits(&gb, 5)*33) >> 2; - luma += 4; - *(cb++) = get_bits(&gb, 6) << 2; - *(cr++) = get_bits(&gb, 6) << 2; - } - } - - *got_frame = 1; - - return buf_size; -} - -static av_cold int decode_init(AVCodecContext *avctx) -{ - avctx->pix_fmt = AV_PIX_FMT_YUV411P; - return 0; -} - -AVCodec ff_cljr_decoder = { - .name = "cljr", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_CLJR, - .init = decode_init, - .decode = decode_frame, - .capabilities = CODEC_CAP_DR1, - .long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"), -}; -#endif - -#if CONFIG_CLJR_ENCODER -typedef struct CLJRContext { - AVClass *avclass; - AVFrame picture; - int dither_type; -} CLJRContext; - -static av_cold int encode_init(AVCodecContext *avctx) -{ - CLJRContext * const a = avctx->priv_data; - - avctx->coded_frame = &a->picture; - - return 0; -} - -static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, - const AVFrame *p, int *got_packet) -{ - CLJRContext *a = avctx->priv_data; - PutBitContext pb; - int x, y, ret; - uint32_t dither= avctx->frame_number; - static const uint32_t ordered_dither[2][2] = - { - { 0x10400000, 0x104F0000 }, - { 0xCB2A0000, 0xCB250000 }, - }; - - if ((ret = ff_alloc_packet2(avctx, pkt, 32*avctx->height*avctx->width/4)) < 0) - return ret; - - avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; - avctx->coded_frame->key_frame = 1; - - init_put_bits(&pb, pkt->data, pkt->size); - - for (y = 0; y < avctx->height; y++) { - uint8_t *luma = &p->data[0][y * p->linesize[0]]; - uint8_t *cb = &p->data[1][y * p->linesize[1]]; - uint8_t *cr = &p->data[2][y * p->linesize[2]]; - for (x = 0; x < avctx->width; x += 4) { - switch (a->dither_type) { - case 0: dither = 0x492A0000; break; - case 1: dither = dither * 1664525 + 1013904223; break; - case 2: dither = ordered_dither[ y&1 ][ (x>>2)&1 ];break; - } - put_bits(&pb, 5, (249*(luma[3] + (dither>>29) )) >> 11); - put_bits(&pb, 5, (249*(luma[2] + ((dither>>26)&7))) >> 11); - put_bits(&pb, 5, (249*(luma[1] + ((dither>>23)&7))) >> 11); - put_bits(&pb, 5, (249*(luma[0] + ((dither>>20)&7))) >> 11); - luma += 4; - put_bits(&pb, 6, (253*(*(cb++) + ((dither>>18)&3))) >> 10); - put_bits(&pb, 6, (253*(*(cr++) + ((dither>>16)&3))) >> 10); - } - } - - flush_put_bits(&pb); - - pkt->size = put_bits_count(&pb) / 8; - pkt->flags |= AV_PKT_FLAG_KEY; - *got_packet = 1; - return 0; -} - -#define OFFSET(x) offsetof(CLJRContext, x) -#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM -static const AVOption options[] = { - { "dither_type", "Dither type", OFFSET(dither_type), AV_OPT_TYPE_INT, { .i64=1 }, 0, 2, VE}, - { NULL }, -}; - -static const AVClass class = { - .class_name = "cljr encoder", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVCodec ff_cljr_encoder = { - .name = "cljr", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_CLJR, - .priv_data_size = sizeof(CLJRContext), - .init = encode_init, - .encode2 = encode_frame, - .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P, - AV_PIX_FMT_NONE }, - .long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"), - .priv_class = &class, -}; -#endif |