mirror of https://git.ffmpeg.org/ffmpeg.git
249 lines
8.2 KiB
C
249 lines
8.2 KiB
C
/*
|
|
* V210 decoder
|
|
*
|
|
* Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
|
|
* Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include "avcodec.h"
|
|
#include "codec_internal.h"
|
|
#include "v210dec.h"
|
|
#include "v210dec_init.h"
|
|
#include "libavutil/bswap.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/mem.h"
|
|
#include "thread.h"
|
|
|
|
typedef struct ThreadData {
|
|
AVFrame *frame;
|
|
const uint8_t *buf;
|
|
int stride;
|
|
} ThreadData;
|
|
|
|
static av_cold int decode_init(AVCodecContext *avctx)
|
|
{
|
|
V210DecContext *s = avctx->priv_data;
|
|
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
|
|
avctx->bits_per_raw_sample = 10;
|
|
|
|
s->thread_count = av_clip(avctx->thread_count, 1, avctx->height/4);
|
|
s->aligned_input = 0;
|
|
ff_v210dec_init(s);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void decode_row(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, const int width,
|
|
void (*unpack_frame)(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width))
|
|
{
|
|
uint32_t val;
|
|
int w = (FFMAX(0, width - 12) / 12) * 12;
|
|
|
|
unpack_frame(src, y, u, v, w);
|
|
|
|
y += w;
|
|
u += w >> 1;
|
|
v += w >> 1;
|
|
src += (w << 1) / 3;
|
|
|
|
while (w < width - 5) {
|
|
READ_PIXELS(u, y, v);
|
|
READ_PIXELS(y, u, y);
|
|
READ_PIXELS(v, y, u);
|
|
READ_PIXELS(y, v, y);
|
|
w += 6;
|
|
}
|
|
|
|
if (w++ < width) {
|
|
READ_PIXELS(u, y, v);
|
|
|
|
if (w++ < width) {
|
|
val = av_le2ne32(*src++);
|
|
*y++ = val & 0x3FF;
|
|
|
|
if (w++ < width) {
|
|
*u++ = (val >> 10) & 0x3FF;
|
|
*y++ = (val >> 20) & 0x3FF;
|
|
val = av_le2ne32(*src++);
|
|
*v++ = val & 0x3FF;
|
|
|
|
if (w++ < width) {
|
|
*y++ = (val >> 10) & 0x3FF;
|
|
|
|
if (w++ < width) {
|
|
*u++ = (val >> 20) & 0x3FF;
|
|
val = av_le2ne32(*src++);
|
|
*y++ = val & 0x3FF;
|
|
*v++ = (val >> 10) & 0x3FF;
|
|
|
|
if (w++ < width)
|
|
*y++ = (val >> 20) & 0x3FF;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int v210_decode_slice(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
|
|
{
|
|
V210DecContext *s = avctx->priv_data;
|
|
ThreadData *td = arg;
|
|
AVFrame *frame = td->frame;
|
|
int stride = td->stride;
|
|
int slice_start = (avctx->height * jobnr) / s->thread_count;
|
|
int slice_end = (avctx->height * (jobnr+1)) / s->thread_count;
|
|
const uint8_t *psrc = td->buf + stride * slice_start;
|
|
int16_t *py = (uint16_t*)frame->data[0] + slice_start * frame->linesize[0] / 2;
|
|
int16_t *pu = (uint16_t*)frame->data[1] + slice_start * frame->linesize[1] / 2;
|
|
int16_t *pv = (uint16_t*)frame->data[2] + slice_start * frame->linesize[2] / 2;
|
|
|
|
for (int h = slice_start; h < slice_end; h++) {
|
|
decode_row((const uint32_t *)psrc, py, pu, pv, avctx->width, s->unpack_frame);
|
|
psrc += stride;
|
|
py += frame->linesize[0] / 2;
|
|
pu += frame->linesize[1] / 2;
|
|
pv += frame->linesize[2] / 2;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int v210_stride(int width, int align) {
|
|
int aligned_width = ((width + align - 1) / align) * align;
|
|
return aligned_width * 8 / 3;
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx, AVFrame *pic,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
V210DecContext *s = avctx->priv_data;
|
|
ThreadData td;
|
|
int ret, stride, aligned_input;
|
|
const uint8_t *psrc = avpkt->data;
|
|
|
|
if (s->custom_stride )
|
|
stride = s->custom_stride > 0 ? s->custom_stride : 0;
|
|
else {
|
|
stride = v210_stride(avctx->width, 48);
|
|
if (avpkt->size < stride * avctx->height) {
|
|
int align;
|
|
for (align = 24; align >= 6; align >>= 1) {
|
|
int small_stride = v210_stride(avctx->width, align);
|
|
if (avpkt->size == small_stride * avctx->height) {
|
|
stride = small_stride;
|
|
if (!s->stride_warning_shown)
|
|
av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (%d byte) detected\n", align * 8 / 3);
|
|
s->stride_warning_shown = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (align < 6 && avctx->codec_tag == MKTAG('b', 'x', 'y', '2'))
|
|
stride = 0;
|
|
}
|
|
}
|
|
|
|
if (stride == 0 && ((avctx->width & 1) || (int64_t)avctx->width * avctx->height > INT_MAX / 6)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Strideless v210 is not supported for size %dx%d\n", avctx->width, avctx->height);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (stride > 0 && avpkt->size < (int64_t)stride * avctx->height ||
|
|
stride == 0 && avpkt->size < v210_stride(avctx->width * avctx->height, 6)) {
|
|
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if ( avctx->codec_tag == MKTAG('C', '2', '1', '0')
|
|
&& avpkt->size > 64
|
|
&& AV_RN32(psrc) == AV_RN32("INFO")
|
|
&& avpkt->size - 64 >= stride * avctx->height)
|
|
psrc += 64;
|
|
|
|
aligned_input = !((uintptr_t)psrc & 0x1f) && !(stride & 0x1f);
|
|
if (aligned_input != s->aligned_input) {
|
|
s->aligned_input = aligned_input;
|
|
ff_v210dec_init(s);
|
|
}
|
|
|
|
if ((ret = ff_thread_get_buffer(avctx, pic, 0)) < 0)
|
|
return ret;
|
|
|
|
pic->pict_type = AV_PICTURE_TYPE_I;
|
|
pic->flags |= AV_FRAME_FLAG_KEY;
|
|
|
|
if (stride) {
|
|
td.stride = stride;
|
|
td.buf = psrc;
|
|
td.frame = pic;
|
|
avctx->execute2(avctx, v210_decode_slice, &td, NULL, s->thread_count);
|
|
} else {
|
|
uint8_t *pointers[4];
|
|
int linesizes[4];
|
|
int ret = av_image_alloc(pointers, linesizes, avctx->width, avctx->height, avctx->pix_fmt, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
decode_row((const uint32_t *)psrc, (uint16_t *)pointers[0], (uint16_t *)pointers[1], (uint16_t *)pointers[2], avctx->width * avctx->height, s->unpack_frame);
|
|
av_image_copy2(pic->data, pic->linesize, pointers, linesizes,
|
|
avctx->pix_fmt, avctx->width, avctx->height);
|
|
av_freep(&pointers[0]);
|
|
}
|
|
|
|
if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
|
|
/* we have interlaced material flagged in container */
|
|
pic->flags |= AV_FRAME_FLAG_INTERLACED;
|
|
if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
|
|
pic->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
|
|
}
|
|
|
|
*got_frame = 1;
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
#define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
|
|
static const AVOption v210dec_options[] = {
|
|
{"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), AV_OPT_TYPE_INT,
|
|
{.i64 = 0}, -1, INT_MAX, V210DEC_FLAGS},
|
|
{NULL}
|
|
};
|
|
|
|
static const AVClass v210dec_class = {
|
|
.class_name = "V210 Decoder",
|
|
.item_name = av_default_item_name,
|
|
.option = v210dec_options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
const FFCodec ff_v210_decoder = {
|
|
.p.name = "v210",
|
|
CODEC_LONG_NAME("Uncompressed 4:2:2 10-bit"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_V210,
|
|
.priv_data_size = sizeof(V210DecContext),
|
|
.init = decode_init,
|
|
FF_CODEC_DECODE_CB(decode_frame),
|
|
.p.capabilities = AV_CODEC_CAP_DR1 |
|
|
AV_CODEC_CAP_SLICE_THREADS |
|
|
AV_CODEC_CAP_FRAME_THREADS,
|
|
.p.priv_class = &v210dec_class,
|
|
};
|