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y41p is a packed 12-bit 4:1:1 YUV format used by Brooktree. Fixes issue 1123 / ticket #102. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Original file line number | Diff line number | Diff line change |
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/* | ||
* y41p decoder | ||
* | ||
* Copyright (c) 2012 Paul B Mahol | ||
* | ||
* 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 y41p_decode_init(AVCodecContext *avctx) | ||
{ | ||
avctx->pix_fmt = PIX_FMT_YUV411P; | ||
avctx->bits_per_raw_sample = 12; | ||
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if (avctx->width & 7) { | ||
av_log(avctx, AV_LOG_WARNING, "y41p requires width to be divisible by 8.\n"); | ||
} | ||
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avctx->coded_frame = avcodec_alloc_frame(); | ||
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 y41p_decode_frame(AVCodecContext *avctx, void *data, | ||
int *data_size, AVPacket *avpkt) | ||
{ | ||
AVFrame *pic = avctx->coded_frame; | ||
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 < 1.5 * 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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for (i = avctx->height - 1; i >= 0 ; i--) { | ||
y = &pic->data[0][i * pic->linesize[0]]; | ||
u = &pic->data[1][i * pic->linesize[1]]; | ||
v = &pic->data[2][i * pic->linesize[2]]; | ||
for (j = 0; j < avctx->width; j += 8) { | ||
*(u++) = *src++; | ||
*(y++) = *src++; | ||
*(v++) = *src++; | ||
*(y++) = *src++; | ||
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*(u++) = *src++; | ||
*(y++) = *src++; | ||
*(v++) = *src++; | ||
*(y++) = *src++; | ||
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*(y++) = *src++; | ||
*(y++) = *src++; | ||
*(y++) = *src++; | ||
*(y++) = *src++; | ||
} | ||
} | ||
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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 y41p_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_y41p_decoder = { | ||
.name = "y41p", | ||
.type = AVMEDIA_TYPE_VIDEO, | ||
.id = CODEC_ID_Y41P, | ||
.init = y41p_decode_init, | ||
.decode = y41p_decode_frame, | ||
.close = y41p_decode_close, | ||
.capabilities = CODEC_CAP_DR1, | ||
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"), | ||
}; |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,101 @@ | ||
/* | ||
* y41p encoder | ||
* | ||
* Copyright (c) 2012 Paul B Mahol | ||
* | ||
* 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 y41p_encode_init(AVCodecContext *avctx) | ||
{ | ||
if (avctx->width & 7) { | ||
av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\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 y41p_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; | ||
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if (buf_size < avctx->width * avctx->height * 1.5) { | ||
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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for (i = avctx->height - 1; i >= 0; i--) { | ||
y = &pic->data[0][i * pic->linesize[0]]; | ||
u = &pic->data[1][i * pic->linesize[1]]; | ||
v = &pic->data[2][i * pic->linesize[2]]; | ||
for (j = 0; j < avctx->width; j += 8) { | ||
*(dst++) = *(u++); | ||
*(dst++) = *(y++); | ||
*(dst++) = *(v++); | ||
*(dst++) = *(y++); | ||
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*(dst++) = *(u++); | ||
*(dst++) = *(y++); | ||
*(dst++) = *(v++); | ||
*(dst++) = *(y++); | ||
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*(dst++) = *(y++); | ||
*(dst++) = *(y++); | ||
*(dst++) = *(y++); | ||
*(dst++) = *(y++); | ||
} | ||
} | ||
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return avctx->width * avctx->height * 1.5; | ||
} | ||
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static av_cold int y41p_encode_close(AVCodecContext *avctx) | ||
{ | ||
av_freep(&avctx->coded_frame); | ||
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return 0; | ||
} | ||
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AVCodec ff_y41p_encoder = { | ||
.name = "y41p", | ||
.type = AVMEDIA_TYPE_VIDEO, | ||
.id = CODEC_ID_Y41P, | ||
.init = y41p_encode_init, | ||
.encode = y41p_encode_frame, | ||
.close = y41p_encode_close, | ||
.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV411P, | ||
PIX_FMT_NONE }, | ||
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"), | ||
}; |
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