mirror of https://github.com/FFmpeg/FFmpeg.git
Reviewed-by: Derek Buitenhuis Reviewed-by: Paul B Maholpull/3/head
parent
64e4f4836a
commit
2754514787
10 changed files with 213 additions and 1 deletions
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/*
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* v308 decoder |
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* Copyright (c) 2011 Carl Eugen Hoyos |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avcodec.h" |
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static av_cold int v308_decode_init(AVCodecContext *avctx) |
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{ |
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avctx->pix_fmt = PIX_FMT_YUV444P; |
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if (avctx->width & 1) |
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av_log(avctx, AV_LOG_WARNING, "v308 requires width to be even.\n"); |
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avctx->coded_frame = avcodec_alloc_frame(); |
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if (!avctx->coded_frame) { |
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av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); |
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return AVERROR(ENOMEM); |
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} |
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return 0; |
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} |
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static int v308_decode_frame(AVCodecContext *avctx, void *data, |
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int *data_size, AVPacket *avpkt) |
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{ |
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AVFrame *pic = avctx->coded_frame; |
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const uint8_t *src = avpkt->data; |
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uint8_t *y, *u, *v; |
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int i, j; |
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if (pic->data[0]) |
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avctx->release_buffer(avctx, pic); |
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if (avpkt->size < 3 * avctx->height * avctx->width) { |
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av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); |
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return AVERROR(EINVAL); |
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} |
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pic->reference = 0; |
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if (avctx->get_buffer(avctx, pic) < 0) { |
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av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n"); |
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return AVERROR(ENOMEM); |
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} |
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pic->key_frame = 1; |
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pic->pict_type = FF_I_TYPE; |
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y = pic->data[0]; |
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u = pic->data[1]; |
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v = pic->data[2]; |
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for (i = 0; i < avctx->height; i++) { |
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for (j = 0; j < avctx->width; j++) { |
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v[j] = *src++; |
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y[j] = *src++; |
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u[j] = *src++; |
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} |
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y += pic->linesize[0]; |
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u += pic->linesize[1]; |
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v += pic->linesize[2]; |
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} |
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*data_size = sizeof(AVFrame); |
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*(AVFrame *)data = *pic; |
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return avpkt->size; |
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} |
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static av_cold int v308_decode_close(AVCodecContext *avctx) |
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{ |
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if (avctx->coded_frame->data[0]) |
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avctx->release_buffer(avctx, avctx->coded_frame); |
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av_freep(&avctx->coded_frame); |
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return 0; |
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} |
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AVCodec ff_v308_decoder = { |
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.name = "v308", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = CODEC_ID_V308, |
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.init = v308_decode_init, |
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.decode = v308_decode_frame, |
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.close = v308_decode_close, |
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.capabilities = CODEC_CAP_DR1, |
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"), |
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}; |
@ -0,0 +1,96 @@ |
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/*
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* v308 encoder |
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* |
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* Copyright (c) 2011 Carl Eugen Hoyos |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/intreadwrite.h" |
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#include "avcodec.h" |
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static av_cold int v308_encode_init(AVCodecContext *avctx) |
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{ |
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if (avctx->width & 1) { |
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av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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avctx->coded_frame = avcodec_alloc_frame(); |
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if (!avctx->coded_frame) { |
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av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); |
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return AVERROR(ENOMEM); |
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} |
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return 0; |
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} |
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static int v308_encode_frame(AVCodecContext *avctx, uint8_t *buf, |
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int buf_size, void *data) |
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{ |
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AVFrame *pic = data; |
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uint8_t *dst = buf; |
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uint8_t *y, *u, *v; |
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int i, j; |
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int output_size = 0; |
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if (buf_size < avctx->width * avctx->height * 3) { |
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av_log(avctx, AV_LOG_ERROR, "Out buffer is too small.\n"); |
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return AVERROR(ENOMEM); |
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} |
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avctx->coded_frame->reference = 0; |
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avctx->coded_frame->key_frame = 1; |
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avctx->coded_frame->pict_type = FF_I_TYPE; |
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y = pic->data[0]; |
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u = pic->data[1]; |
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v = pic->data[2]; |
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for (i = 0; i < avctx->height; i++) { |
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for (j = 0; j < avctx->width; j++) { |
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*dst++ = v[j]; |
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*dst++ = y[j]; |
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*dst++ = u[j]; |
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output_size += 3; |
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} |
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y += pic->linesize[0]; |
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u += pic->linesize[1]; |
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v += pic->linesize[2]; |
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} |
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return output_size; |
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} |
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static av_cold int v308_encode_close(AVCodecContext *avctx) |
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{ |
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av_freep(&avctx->coded_frame); |
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return 0; |
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} |
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AVCodec ff_v308_encoder = { |
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.name = "v308", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = CODEC_ID_V308, |
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.init = v308_encode_init, |
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.encode = v308_encode_frame, |
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.close = v308_encode_close, |
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.pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV444P, PIX_FMT_NONE }, |
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"), |
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}; |
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