mirror of
https://github.com/FFmpeg/FFmpeg.git
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236 lines
7.0 KiB
C
236 lines
7.0 KiB
C
/*
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* V210 encoder
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*
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* Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
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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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#include "bytestream.h"
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#include "internal.h"
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#include "v210enc.h"
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#define CLIP(v) av_clip(v, 4, 1019)
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#define CLIP8(v) av_clip(v, 1, 254)
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#define WRITE_PIXELS(a, b, c) \
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do { \
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val = CLIP(*a++); \
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val |= (CLIP(*b++) << 10) | \
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(CLIP(*c++) << 20); \
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AV_WL32(dst, val); \
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dst += 4; \
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} while (0)
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#define WRITE_PIXELS8(a, b, c) \
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do { \
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val = (CLIP8(*a++) << 2); \
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val |= (CLIP8(*b++) << 12) | \
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(CLIP8(*c++) << 22); \
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AV_WL32(dst, val); \
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dst += 4; \
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} while (0)
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static void v210_planar_pack_8_c(const uint8_t *y, const uint8_t *u,
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const uint8_t *v, uint8_t *dst, ptrdiff_t width)
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{
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uint32_t val;
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int i;
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/* unroll this to match the assembly */
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for( i = 0; i < width-11; i += 12 ){
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WRITE_PIXELS8(u, y, v);
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WRITE_PIXELS8(y, u, y);
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WRITE_PIXELS8(v, y, u);
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WRITE_PIXELS8(y, v, y);
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WRITE_PIXELS8(u, y, v);
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WRITE_PIXELS8(y, u, y);
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WRITE_PIXELS8(v, y, u);
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WRITE_PIXELS8(y, v, y);
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}
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}
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static void v210_planar_pack_10_c(const uint16_t *y, const uint16_t *u,
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const uint16_t *v, uint8_t *dst, ptrdiff_t width)
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{
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uint32_t val;
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int i;
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for( i = 0; i < width-5; i += 6 ){
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WRITE_PIXELS(u, y, v);
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WRITE_PIXELS(y, u, y);
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WRITE_PIXELS(v, y, u);
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WRITE_PIXELS(y, v, y);
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}
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}
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static av_cold int encode_init(AVCodecContext *avctx)
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{
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V210EncContext *s = avctx->priv_data;
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if (avctx->width & 1) {
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av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
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return AVERROR(EINVAL);
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}
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avctx->coded_frame = av_frame_alloc();
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if (!avctx->coded_frame)
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return AVERROR(ENOMEM);
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avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
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s->pack_line_8 = v210_planar_pack_8_c;
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s->pack_line_10 = v210_planar_pack_10_c;
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if (ARCH_X86)
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ff_v210enc_init_x86(s);
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return 0;
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}
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static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *pic, int *got_packet)
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{
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V210EncContext *s = avctx->priv_data;
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int aligned_width = ((avctx->width + 47) / 48) * 48;
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int stride = aligned_width * 8 / 3;
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int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
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int h, w, ret;
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uint8_t *dst;
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if ((ret = ff_alloc_packet(pkt, avctx->height * stride)) < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
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return ret;
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}
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dst = pkt->data;
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if (pic->format == AV_PIX_FMT_YUV422P10) {
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const uint16_t *y = (const uint16_t*)pic->data[0];
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const uint16_t *u = (const uint16_t*)pic->data[1];
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const uint16_t *v = (const uint16_t*)pic->data[2];
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for (h = 0; h < avctx->height; h++) {
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uint32_t val;
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w = (avctx->width / 6) * 6;
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s->pack_line_10(y, u, v, dst, w);
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y += w;
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u += w >> 1;
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v += w >> 1;
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dst += (w / 6) * 16;
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if (w < avctx->width - 1) {
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WRITE_PIXELS(u, y, v);
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val = CLIP(*y++);
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if (w == avctx->width - 2) {
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AV_WL32(dst, val);
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dst += 4;
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}
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}
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if (w < avctx->width - 3) {
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val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20);
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AV_WL32(dst, val);
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dst += 4;
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val = CLIP(*v++) | (CLIP(*y++) << 10);
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AV_WL32(dst, val);
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dst += 4;
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}
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memset(dst, 0, line_padding);
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dst += line_padding;
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y += pic->linesize[0] / 2 - avctx->width;
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u += pic->linesize[1] / 2 - avctx->width / 2;
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v += pic->linesize[2] / 2 - avctx->width / 2;
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}
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}
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else if(pic->format == AV_PIX_FMT_YUV422P) {
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const uint8_t *y = pic->data[0];
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const uint8_t *u = pic->data[1];
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const uint8_t *v = pic->data[2];
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for (h = 0; h < avctx->height; h++) {
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uint32_t val;
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w = (avctx->width / 12) * 12;
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s->pack_line_8(y, u, v, dst, w);
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y += w;
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u += w >> 1;
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v += w >> 1;
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dst += (w / 12) * 32;
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for( ; w < avctx->width-5; w += 6 ){
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WRITE_PIXELS8(u, y, v);
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WRITE_PIXELS8(y, u, y);
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WRITE_PIXELS8(v, y, u);
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WRITE_PIXELS8(y, v, y);
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}
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if (w < avctx->width - 1) {
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WRITE_PIXELS8(u, y, v);
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val = CLIP8(*y++) << 2;
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if (w == avctx->width - 2) {
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AV_WL32(dst, val);
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dst += 4;
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}
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}
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if (w < avctx->width - 3) {
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val |= (CLIP8(*u++) << 12) | (CLIP8(*y++) << 22);
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AV_WL32(dst, val);
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dst += 4;
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val = (CLIP8(*v++) << 2) | (CLIP8(*y++) << 12);
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AV_WL32(dst, val);
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dst += 4;
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}
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memset(dst, 0, line_padding);
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dst += line_padding;
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y += pic->linesize[0] - avctx->width;
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u += pic->linesize[1] - avctx->width / 2;
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v += pic->linesize[2] - avctx->width / 2;
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}
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}
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pkt->flags |= AV_PKT_FLAG_KEY;
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*got_packet = 1;
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return 0;
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}
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static av_cold int encode_close(AVCodecContext *avctx)
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{
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av_freep(&avctx->coded_frame);
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return 0;
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}
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AVCodec ff_v210_encoder = {
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.name = "v210",
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_V210,
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.priv_data_size = sizeof(V210EncContext),
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.init = encode_init,
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.encode2 = encode_frame,
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.close = encode_close,
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE },
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};
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