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author | Nidhi Makhijani <nidhimj22@gmail.com> | 2014-07-05 21:04:05 +0530 |
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committer | Diego Biurrun <diego@biurrun.de> | 2014-07-06 09:28:20 -0700 |
commit | 373a6dda5422186bc057297342a9e559a564595e (patch) | |
tree | 2f902f6ecc2524715e2e2e79feca8d68dc54b34b /libavcodec/cljr.c | |
parent | 02a7a5e330ec4373a761f63c292220a1de13b968 (diff) | |
download | ffmpeg-streaming-373a6dda5422186bc057297342a9e559a564595e.zip ffmpeg-streaming-373a6dda5422186bc057297342a9e559a564595e.tar.gz |
cljr: split decoder and encoder
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavcodec/cljr.c')
-rw-r--r-- | libavcodec/cljr.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/libavcodec/cljr.c b/libavcodec/cljr.c deleted file mode 100644 index ad0f729..0000000 --- a/libavcodec/cljr.c +++ /dev/null @@ -1,166 +0,0 @@ -/* - * Cirrus Logic AccuPak (CLJR) codec - * Copyright (c) 2003 Alex Beregszaszi - * - * This file is part of Libav. - * - * Libav 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. - * - * Libav 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 Libav; 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 "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) { - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); - 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) << 3; - luma[2] = get_bits(&gb, 5) << 3; - luma[1] = get_bits(&gb, 5) << 3; - luma[0] = get_bits(&gb, 5) << 3; - 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", - .long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_CLJR, - .init = decode_init, - .decode = decode_frame, - .capabilities = CODEC_CAP_DR1, -}; -#endif - -#if CONFIG_CLJR_ENCODER -static av_cold int encode_init(AVCodecContext *avctx) -{ - avctx->coded_frame = av_frame_alloc(); - if (!avctx->coded_frame) - return AVERROR(ENOMEM); - - return 0; -} - -static av_cold int encode_close(AVCodecContext *avctx) -{ - av_frame_free(&avctx->coded_frame); - return 0; -} - -static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, - const AVFrame *p, int *got_packet) -{ - PutBitContext pb; - int x, y, ret; - - if ((ret = ff_alloc_packet(pkt, 32*avctx->height*avctx->width/4)) < 0) { - av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n"); - 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) { - put_bits(&pb, 5, luma[3] >> 3); - put_bits(&pb, 5, luma[2] >> 3); - put_bits(&pb, 5, luma[1] >> 3); - put_bits(&pb, 5, luma[0] >> 3); - luma += 4; - put_bits(&pb, 6, *(cb++) >> 2); - put_bits(&pb, 6, *(cr++) >> 2); - } - } - - flush_put_bits(&pb); - - pkt->size = put_bits_count(&pb) / 8; - pkt->flags |= AV_PKT_FLAG_KEY; - *got_packet = 1; - return 0; -} - -AVCodec ff_cljr_encoder = { - .name = "cljr", - .long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_CLJR, - .init = encode_init, - .encode2 = encode_frame, - .close = encode_close, - .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P, - AV_PIX_FMT_NONE }, -}; -#endif |