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"
30 #include "libavutil/intreadwrite.h"
33 #define READ_PIXELS(a, b, c) \
35 val = av_le2ne32(*src++); \
37 *b++ = (val >> 10) & 0x3FF; \
38 *c++ = (val >> 20) & 0x3FF; \
41 typedef struct ThreadData {
47 static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
52 for( i = 0; i < width-5; i += 6 ){
60 av_cold void ff_v210dec_init(V210DecContext *s)
62 s->unpack_frame = v210_planar_unpack_c;
67 static av_cold int decode_init(AVCodecContext *avctx)
69 V210DecContext *s = avctx->priv_data;
71 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
72 avctx->bits_per_raw_sample = 10;
74 s->thread_count = av_clip(avctx->thread_count, 1, avctx->height/4);
81 static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
83 V210DecContext *s = avctx->priv_data;
86 AVFrame *frame = td->frame;
87 int stride = td->stride;
88 int slice_start = (avctx->height * jobnr) / s->thread_count;
89 int slice_end = (avctx->height * (jobnr+1)) / s->thread_count;
90 uint8_t *psrc = td->buf + stride * slice_start;
93 y = (uint16_t*)frame->data[0] + slice_start * frame->linesize[0] / 2;
94 u = (uint16_t*)frame->data[1] + slice_start * frame->linesize[1] / 2;
95 v = (uint16_t*)frame->data[2] + slice_start * frame->linesize[2] / 2;
96 for (h = slice_start; h < slice_end; h++) {
97 const uint32_t *src = (const uint32_t*)psrc;
100 w = (avctx->width / 12) * 12;
101 s->unpack_frame(src, y, u, v, w);
108 if (w < avctx->width - 5) {
109 READ_PIXELS(u, y, v);
110 READ_PIXELS(y, u, y);
111 READ_PIXELS(v, y, u);
112 READ_PIXELS(y, v, y);
116 if (w < avctx->width - 1) {
117 READ_PIXELS(u, y, v);
119 val = av_le2ne32(*src++);
121 if (w < avctx->width - 3) {
122 *u++ = (val >> 10) & 0x3FF;
123 *y++ = (val >> 20) & 0x3FF;
125 val = av_le2ne32(*src++);
127 *y++ = (val >> 10) & 0x3FF;
132 y += frame->linesize[0] / 2 - avctx->width + (avctx->width & 1);
133 u += frame->linesize[1] / 2 - avctx->width / 2;
134 v += frame->linesize[2] / 2 - avctx->width / 2;
140 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
143 V210DecContext *s = avctx->priv_data;
145 int ret, stride, aligned_input;
146 ThreadFrame frame = { .f = data };
148 const uint8_t *psrc = avpkt->data;
150 if (s->custom_stride )
151 stride = s->custom_stride;
153 int aligned_width = ((avctx->width + 47) / 48) * 48;
154 stride = aligned_width * 8 / 3;
157 if (avpkt->size < stride * avctx->height) {
158 if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) {
159 stride = avpkt->size / avctx->height;
160 if (!s->stride_warning_shown)
161 av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n");
162 s->stride_warning_shown = 1;
164 av_log(avctx, AV_LOG_ERROR, "packet too small\n");
165 return AVERROR_INVALIDDATA;
169 if ( avctx->codec_tag == MKTAG('C', '2', '1', '0')
171 && AV_RN32(psrc) == AV_RN32("INFO")
172 && avpkt->size - 64 >= stride * avctx->height)
175 aligned_input = !((uintptr_t)psrc & 0x1f) && !(stride & 0x1f);
176 if (aligned_input != s->aligned_input) {
177 s->aligned_input = aligned_input;
181 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
184 pic->pict_type = AV_PICTURE_TYPE_I;
187 td.buf = (uint8_t*)psrc;
189 avctx->execute2(avctx, v210_decode_slice, &td, NULL, s->thread_count);
191 if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
192 /* we have interlaced material flagged in container */
193 pic->interlaced_frame = 1;
194 if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
195 pic->top_field_first = 1;
203 #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
204 static const AVOption v210dec_options[] = {
205 {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), AV_OPT_TYPE_INT,
206 {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
210 static const AVClass v210dec_class = {
211 .class_name = "V210 Decoder",
212 .item_name = av_default_item_name,
213 .option = v210dec_options,
214 .version = LIBAVUTIL_VERSION_INT,
217 AVCodec ff_v210_decoder = {
219 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
220 .type = AVMEDIA_TYPE_VIDEO,
221 .id = AV_CODEC_ID_V210,
222 .priv_data_size = sizeof(V210DecContext),
224 .decode = decode_frame,
225 .capabilities = AV_CODEC_CAP_DR1 |
226 AV_CODEC_CAP_SLICE_THREADS |
227 AV_CODEC_CAP_FRAME_THREADS,
228 .priv_class = &v210dec_class,