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ffmpeg/libavcodec/v210enc.c

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/*
* V210 encoder
*
* 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 "bytestream.h"
#include "internal.h"
#include "v210enc.h"
#define CLIP(v) av_clip(v, 4, 1019)
#define CLIP8(v) av_clip(v, 1, 254)
#define WRITE_PIXELS(a, b, c) \
do { \
val = CLIP(*a++); \
val |= (CLIP(*b++) << 10) | \
(CLIP(*c++) << 20); \
AV_WL32(dst, val); \
dst += 4; \
} while (0)
#define WRITE_PIXELS8(a, b, c) \
do { \
val = (CLIP8(*a++) << 2); \
val |= (CLIP8(*b++) << 12) | \
(CLIP8(*c++) << 22); \
AV_WL32(dst, val); \
dst += 4; \
} while (0)
static void v210_planar_pack_8_c(const uint8_t *y, const uint8_t *u,
const uint8_t *v, uint8_t *dst,
ptrdiff_t width)
{
uint32_t val;
int i;
/* unroll this to match the assembly */
for (i = 0; i < width - 11; i += 12) {
WRITE_PIXELS8(u, y, v);
WRITE_PIXELS8(y, u, y);
WRITE_PIXELS8(v, y, u);
WRITE_PIXELS8(y, v, y);
WRITE_PIXELS8(u, y, v);
WRITE_PIXELS8(y, u, y);
WRITE_PIXELS8(v, y, u);
WRITE_PIXELS8(y, v, y);
}
}
static void v210_planar_pack_10_c(const uint16_t *y, const uint16_t *u,
const uint16_t *v, uint8_t *dst,
ptrdiff_t width)
{
uint32_t val;
int i;
for (i = 0; i < width - 5; i += 6) {
WRITE_PIXELS(u, y, v);
WRITE_PIXELS(y, u, y);
WRITE_PIXELS(v, y, u);
WRITE_PIXELS(y, v, y);
}
}
av_cold void ff_v210enc_init(V210EncContext *s)
{
s->pack_line_8 = v210_planar_pack_8_c;
s->pack_line_10 = v210_planar_pack_10_c;
s->sample_factor_8 = 1;
s->sample_factor_10 = 1;
if (ARCH_X86)
ff_v210enc_init_x86(s);
}
static av_cold int encode_init(AVCodecContext *avctx)
{
V210EncContext *s = avctx->priv_data;
if (avctx->width & 1) {
av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
return AVERROR(EINVAL);
}
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
ff_v210enc_init(s);
return 0;
}
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pic, int *got_packet)
{
V210EncContext *s = avctx->priv_data;
int aligned_width = ((avctx->width + 47) / 48) * 48;
int stride = aligned_width * 8 / 3;
int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
int h, w, ret;
uint8_t *dst;
ret = ff_alloc_packet2(avctx, pkt, avctx->height * stride, avctx->height * stride);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
return ret;
}
dst = pkt->data;
if (pic->format == AV_PIX_FMT_YUV422P10) {
const uint16_t *y = (const uint16_t *)pic->data[0];
const uint16_t *u = (const uint16_t *)pic->data[1];
const uint16_t *v = (const uint16_t *)pic->data[2];
const int sample_size = 6 * s->sample_factor_10;
const int sample_w = avctx->width / sample_size;
for (h = 0; h < avctx->height; h++) {
uint32_t val;
w = sample_w * sample_size;
s->pack_line_10(y, u, v, dst, w);
y += w;
u += w >> 1;
v += w >> 1;
dst += sample_w * 16 * s->sample_factor_10;
for (; w < avctx->width - 5; w += 6) {
WRITE_PIXELS(u, y, v);
WRITE_PIXELS(y, u, y);
WRITE_PIXELS(v, y, u);
WRITE_PIXELS(y, v, y);
}
if (w < avctx->width - 1) {
WRITE_PIXELS(u, y, v);
val = CLIP(*y++);
if (w == avctx->width - 2) {
AV_WL32(dst, val);
dst += 4;
}
}
if (w < avctx->width - 3) {
val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20);
AV_WL32(dst, val);
dst += 4;
val = CLIP(*v++) | (CLIP(*y++) << 10);
AV_WL32(dst, val);
dst += 4;
}
memset(dst, 0, line_padding);
dst += line_padding;
y += pic->linesize[0] / 2 - avctx->width;
u += pic->linesize[1] / 2 - avctx->width / 2;
v += pic->linesize[2] / 2 - avctx->width / 2;
}
} else if(pic->format == AV_PIX_FMT_YUV422P) {
const uint8_t *y = pic->data[0];
const uint8_t *u = pic->data[1];
const uint8_t *v = pic->data[2];
const int sample_size = 12 * s->sample_factor_8;
const int sample_w = avctx->width / sample_size;
for (h = 0; h < avctx->height; h++) {
uint32_t val;
w = sample_w * sample_size;
s->pack_line_8(y, u, v, dst, w);
y += w;
u += w >> 1;
v += w >> 1;
dst += sample_w * 32 * s->sample_factor_8;
for (; w < avctx->width - 5; w += 6) {
WRITE_PIXELS8(u, y, v);
WRITE_PIXELS8(y, u, y);
WRITE_PIXELS8(v, y, u);
WRITE_PIXELS8(y, v, y);
}
if (w < avctx->width - 1) {
WRITE_PIXELS8(u, y, v);
val = CLIP8(*y++) << 2;
if (w == avctx->width - 2) {
AV_WL32(dst, val);
dst += 4;
}
}
if (w < avctx->width - 3) {
val |= (CLIP8(*u++) << 12) | (CLIP8(*y++) << 22);
AV_WL32(dst, val);
dst += 4;
val = (CLIP8(*v++) << 2) | (CLIP8(*y++) << 12);
AV_WL32(dst, val);
dst += 4;
}
memset(dst, 0, line_padding);
dst += line_padding;
y += pic->linesize[0] - avctx->width;
u += pic->linesize[1] - avctx->width / 2;
v += pic->linesize[2] - avctx->width / 2;
}
}
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
AVCodec ff_v210_encoder = {
.name = "v210",
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_V210,
.priv_data_size = sizeof(V210EncContext),
.init = encode_init,
.encode2 = encode_frame,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE },
};
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