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v308 Quicktim Uncompressed 4:4:4 encoder and decoder.
Reviewed-by: Derek Buitenhuis Reviewed-by: Paul B Mahol
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Original file line number | Diff line number | Diff line change |
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/* | ||
* v308 decoder | ||
* Copyright (c) 2011 Carl Eugen Hoyos | ||
* | ||
* 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 | ||
*/ | ||
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#include "avcodec.h" | ||
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static av_cold int v308_decode_init(AVCodecContext *avctx) | ||
{ | ||
avctx->pix_fmt = PIX_FMT_YUV444P; | ||
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if (avctx->width & 1) | ||
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) { | ||
av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); | ||
return AVERROR(ENOMEM); | ||
} | ||
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return 0; | ||
} | ||
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static int v308_decode_frame(AVCodecContext *avctx, void *data, | ||
int *data_size, AVPacket *avpkt) | ||
{ | ||
AVFrame *pic = avctx->coded_frame; | ||
const uint8_t *src = avpkt->data; | ||
uint8_t *y, *u, *v; | ||
int i, j; | ||
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if (pic->data[0]) | ||
avctx->release_buffer(avctx, pic); | ||
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if (avpkt->size < 3 * avctx->height * avctx->width) { | ||
av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); | ||
return AVERROR(EINVAL); | ||
} | ||
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pic->reference = 0; | ||
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if (avctx->get_buffer(avctx, pic) < 0) { | ||
av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n"); | ||
return AVERROR(ENOMEM); | ||
} | ||
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pic->key_frame = 1; | ||
pic->pict_type = FF_I_TYPE; | ||
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y = pic->data[0]; | ||
u = pic->data[1]; | ||
v = pic->data[2]; | ||
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for (i = 0; i < avctx->height; i++) { | ||
for (j = 0; j < avctx->width; j++) { | ||
v[j] = *src++; | ||
y[j] = *src++; | ||
u[j] = *src++; | ||
} | ||
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y += pic->linesize[0]; | ||
u += pic->linesize[1]; | ||
v += pic->linesize[2]; | ||
} | ||
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*data_size = sizeof(AVFrame); | ||
*(AVFrame *)data = *pic; | ||
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return avpkt->size; | ||
} | ||
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static av_cold int v308_decode_close(AVCodecContext *avctx) | ||
{ | ||
if (avctx->coded_frame->data[0]) | ||
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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AVCodec ff_v308_decoder = { | ||
.name = "v308", | ||
.type = AVMEDIA_TYPE_VIDEO, | ||
.id = CODEC_ID_V308, | ||
.init = v308_decode_init, | ||
.decode = v308_decode_frame, | ||
.close = v308_decode_close, | ||
.capabilities = CODEC_CAP_DR1, | ||
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"), | ||
}; |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,96 @@ | ||
/* | ||
* v308 encoder | ||
* | ||
* Copyright (c) 2011 Carl Eugen Hoyos | ||
* | ||
* 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 | ||
*/ | ||
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#include "libavutil/intreadwrite.h" | ||
#include "avcodec.h" | ||
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static av_cold int v308_encode_init(AVCodecContext *avctx) | ||
{ | ||
if (avctx->width & 1) { | ||
av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n"); | ||
return AVERROR_INVALIDDATA; | ||
} | ||
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avctx->coded_frame = avcodec_alloc_frame(); | ||
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if (!avctx->coded_frame) { | ||
av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); | ||
return AVERROR(ENOMEM); | ||
} | ||
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return 0; | ||
} | ||
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static int v308_encode_frame(AVCodecContext *avctx, uint8_t *buf, | ||
int buf_size, void *data) | ||
{ | ||
AVFrame *pic = data; | ||
uint8_t *dst = buf; | ||
uint8_t *y, *u, *v; | ||
int i, j; | ||
int output_size = 0; | ||
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if (buf_size < avctx->width * avctx->height * 3) { | ||
av_log(avctx, AV_LOG_ERROR, "Out buffer is too small.\n"); | ||
return AVERROR(ENOMEM); | ||
} | ||
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avctx->coded_frame->reference = 0; | ||
avctx->coded_frame->key_frame = 1; | ||
avctx->coded_frame->pict_type = FF_I_TYPE; | ||
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y = pic->data[0]; | ||
u = pic->data[1]; | ||
v = pic->data[2]; | ||
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for (i = 0; i < avctx->height; i++) { | ||
for (j = 0; j < avctx->width; j++) { | ||
*dst++ = v[j]; | ||
*dst++ = y[j]; | ||
*dst++ = u[j]; | ||
output_size += 3; | ||
} | ||
y += pic->linesize[0]; | ||
u += pic->linesize[1]; | ||
v += pic->linesize[2]; | ||
} | ||
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return output_size; | ||
} | ||
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static av_cold int v308_encode_close(AVCodecContext *avctx) | ||
{ | ||
av_freep(&avctx->coded_frame); | ||
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return 0; | ||
} | ||
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AVCodec ff_v308_encoder = { | ||
.name = "v308", | ||
.type = AVMEDIA_TYPE_VIDEO, | ||
.id = CODEC_ID_V308, | ||
.init = v308_encode_init, | ||
.encode = v308_encode_frame, | ||
.close = v308_encode_close, | ||
.pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV444P, PIX_FMT_NONE }, | ||
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"), | ||
}; |
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