4 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
5 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "libavutil/bswap.h"
28 #include "libavutil/internal.h"
29 #include "libavutil/mem.h"
31 #define READ_PIXELS(a, b, c) \
33 val = av_le2ne32(*src++); \
35 *b++ = (val >> 10) & 0x3FF; \
36 *c++ = (val >> 20) & 0x3FF; \
39 static void v210_planar_unpack_c(const uint32_t *src
, uint16_t *y
, uint16_t *u
, uint16_t *v
, int width
)
44 for( i
= 0; i
< width
-5; i
+= 6 ){
52 static av_cold
int decode_init(AVCodecContext
*avctx
)
54 V210DecContext
*s
= avctx
->priv_data
;
56 if (avctx
->width
& 1) {
57 av_log(avctx
, AV_LOG_ERROR
, "v210 needs even width\n");
58 return AVERROR_INVALIDDATA
;
60 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P10
;
61 avctx
->bits_per_raw_sample
= 10;
63 s
->unpack_frame
= v210_planar_unpack_c
;
71 static int decode_frame(AVCodecContext
*avctx
, void *data
, int *got_frame
,
74 V210DecContext
*s
= avctx
->priv_data
;
76 int h
, w
, ret
, stride
, aligned_input
;
78 const uint8_t *psrc
= avpkt
->data
;
81 if (s
->custom_stride
)
82 stride
= s
->custom_stride
;
84 int aligned_width
= ((avctx
->width
+ 47) / 48) * 48;
85 stride
= aligned_width
* 8 / 3;
88 if (avpkt
->size
< stride
* avctx
->height
) {
89 if ((((avctx
->width
+ 23) / 24) * 24 * 8) / 3 * avctx
->height
== avpkt
->size
) {
90 stride
= avpkt
->size
/ avctx
->height
;
91 if (!s
->stride_warning_shown
)
92 av_log(avctx
, AV_LOG_WARNING
, "Broken v210 with too small padding (64 byte) detected\n");
93 s
->stride_warning_shown
= 1;
95 av_log(avctx
, AV_LOG_ERROR
, "packet too small\n");
96 return AVERROR_INVALIDDATA
;
100 aligned_input
= !((uintptr_t)psrc
& 0xf) && !(stride
& 0xf);
101 if (aligned_input
!= s
->aligned_input
) {
102 s
->aligned_input
= aligned_input
;
107 if ((ret
= ff_get_buffer(avctx
, pic
, 0)) < 0)
110 y
= (uint16_t*)pic
->data
[0];
111 u
= (uint16_t*)pic
->data
[1];
112 v
= (uint16_t*)pic
->data
[2];
113 pic
->pict_type
= AV_PICTURE_TYPE_I
;
116 for (h
= 0; h
< avctx
->height
; h
++) {
117 const uint32_t *src
= (const uint32_t*)psrc
;
120 w
= (avctx
->width
/ 6) * 6;
121 s
->unpack_frame(src
, y
, u
, v
, w
);
128 if (w
< avctx
->width
- 1) {
129 READ_PIXELS(u
, y
, v
);
131 val
= av_le2ne32(*src
++);
133 if (w
< avctx
->width
- 3) {
134 *u
++ = (val
>> 10) & 0x3FF;
135 *y
++ = (val
>> 20) & 0x3FF;
137 val
= av_le2ne32(*src
++);
139 *y
++ = (val
>> 10) & 0x3FF;
144 y
+= pic
->linesize
[0] / 2 - avctx
->width
;
145 u
+= pic
->linesize
[1] / 2 - avctx
->width
/ 2;
146 v
+= pic
->linesize
[2] / 2 - avctx
->width
/ 2;
149 if (avctx
->field_order
> AV_FIELD_PROGRESSIVE
) {
150 /* we have interlaced material flagged in container */
151 pic
->interlaced_frame
= 1;
152 if (avctx
->field_order
== AV_FIELD_TT
|| avctx
->field_order
== AV_FIELD_TB
)
153 pic
->top_field_first
= 1;
161 #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
162 static const AVOption v210dec_options
[] = {
163 {"custom_stride", "Custom V210 stride", offsetof(V210DecContext
, custom_stride
), FF_OPT_TYPE_INT
,
164 {.i64
= 0}, INT_MIN
, INT_MAX
, V210DEC_FLAGS
},
168 static const AVClass v210dec_class
= {
170 av_default_item_name
,
172 LIBAVUTIL_VERSION_INT
,
175 AVCodec ff_v210_decoder
= {
177 .long_name
= NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
178 .type
= AVMEDIA_TYPE_VIDEO
,
179 .id
= AV_CODEC_ID_V210
,
180 .priv_data_size
= sizeof(V210DecContext
),
182 .decode
= decode_frame
,
183 .capabilities
= CODEC_CAP_DR1
,
184 .priv_class
= &v210dec_class
,