2012-01-01 15:16:42 +03:00
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/*
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* y41p decoder
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*
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* Copyright (c) 2012 Paul B Mahol
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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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2022-03-16 19:18:28 +02:00
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#include "codec_internal.h"
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2012-12-05 17:18:12 +03:00
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#include "internal.h"
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2012-01-01 15:16:42 +03:00
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static av_cold int y41p_decode_init(AVCodecContext *avctx)
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{
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2012-10-08 21:54:00 +03:00
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avctx->pix_fmt = AV_PIX_FMT_YUV411P;
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2012-01-01 15:16:42 +03:00
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avctx->bits_per_raw_sample = 12;
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if (avctx->width & 7) {
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av_log(avctx, AV_LOG_WARNING, "y41p requires width to be divisible by 8.\n");
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}
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return 0;
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}
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2022-03-30 21:33:24 +02:00
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static int y41p_decode_frame(AVCodecContext *avctx, AVFrame *pic,
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2012-12-05 21:24:43 +03:00
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int *got_frame, AVPacket *avpkt)
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2012-01-01 15:16:42 +03:00
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{
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2022-07-04 12:03:01 +02:00
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const uint8_t *src = avpkt->data;
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2012-01-01 15:16:42 +03:00
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uint8_t *y, *u, *v;
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lavc: factorize ff_{thread_,re,}get_buffer error messages.
Coccinelle profile used:
@@
expression r, ctx, f, loglevel, str, flags;
@@
-if ((r = ff_get_buffer(ctx, f, flags)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_get_buffer(ctx, f, flags)) < 0)
+ return r;
@@
expression r, ctx, f, loglevel, str;
@@
-if ((r = ff_reget_buffer(ctx, f)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_reget_buffer(ctx, f)) < 0)
+ return r;
@@
expression r, ctx, f, loglevel, str, flags;
@@
-if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0)
+ return r;
...along with some manual patches for the remaining ones.
2013-03-12 10:41:53 +03:00
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int i, j, ret;
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2012-01-01 15:16:42 +03:00
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2017-05-10 14:33:27 +02:00
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if (avpkt->size < 3LL * avctx->height * FFALIGN(avctx->width, 8) / 2) {
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2012-01-01 15:16:42 +03:00
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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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lavc: factorize ff_{thread_,re,}get_buffer error messages.
Coccinelle profile used:
@@
expression r, ctx, f, loglevel, str, flags;
@@
-if ((r = ff_get_buffer(ctx, f, flags)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_get_buffer(ctx, f, flags)) < 0)
+ return r;
@@
expression r, ctx, f, loglevel, str;
@@
-if ((r = ff_reget_buffer(ctx, f)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_reget_buffer(ctx, f)) < 0)
+ return r;
@@
expression r, ctx, f, loglevel, str, flags;
@@
-if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0)
+ return r;
...along with some manual patches for the remaining ones.
2013-03-12 10:41:53 +03:00
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if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
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return ret;
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2012-01-01 15:16:42 +03:00
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pic->key_frame = 1;
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2012-01-02 20:49:38 +03:00
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pic->pict_type = AV_PICTURE_TYPE_I;
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2012-01-01 15:16:42 +03:00
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for (i = avctx->height - 1; i >= 0 ; i--) {
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y = &pic->data[0][i * pic->linesize[0]];
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u = &pic->data[1][i * pic->linesize[1]];
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v = &pic->data[2][i * pic->linesize[2]];
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for (j = 0; j < avctx->width; j += 8) {
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*(u++) = *src++;
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*(y++) = *src++;
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*(v++) = *src++;
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*(y++) = *src++;
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*(u++) = *src++;
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*(y++) = *src++;
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*(v++) = *src++;
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*(y++) = *src++;
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*(y++) = *src++;
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*(y++) = *src++;
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*(y++) = *src++;
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*(y++) = *src++;
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}
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}
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2012-12-05 21:24:43 +03:00
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*got_frame = 1;
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2012-01-01 15:16:42 +03:00
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return avpkt->size;
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}
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2022-03-16 22:09:54 +02:00
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const FFCodec ff_y41p_decoder = {
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.p.name = "y41p",
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.p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"),
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_Y41P,
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2012-01-01 15:16:42 +03:00
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.init = y41p_decode_init,
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2022-03-30 23:28:24 +02:00
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FF_CODEC_DECODE_CB(y41p_decode_frame),
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2022-03-16 22:09:54 +02:00
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.p.capabilities = AV_CODEC_CAP_DR1,
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2012-01-01 15:16:42 +03:00
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};
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