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ffmpeg/libavcodec/mediacodec_sw_buffer.c

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/*
* Android MediaCodec software buffer copy functions
*
* Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.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 <string.h>
#include <sys/types.h>
#include "libavutil/frame.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "mediacodecdec.h"
#include "mediacodec_wrapper.h"
#include "mediacodec_sw_buffer.h"
#define QCOM_TILE_WIDTH 64
#define QCOM_TILE_HEIGHT 32
#define QCOM_TILE_SIZE (QCOM_TILE_WIDTH * QCOM_TILE_HEIGHT)
#define QCOM_TILE_GROUP_SIZE (4 * QCOM_TILE_SIZE)
/**
* The code handling the various YUV color formats is taken from the
* GStreamer project.
*
* Gstreamer reference:
* https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/sys/androidmedia/
*
* Copyright (C) 2012, Collabora Ltd.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* Copyright (C) 2012, Rafaël Carré <funman@videolanorg>
*
* Copyright (C) 2015, Sebastian Dröge <sebastian@centricular.com>
*
* Copyright (C) 2014-2015, Collabora Ltd.
* Author: Matthieu Bouron <matthieu.bouron@gcollabora.com>
*
* Copyright (C) 2015, Edward Hervey
* Author: Edward Hervey <bilboed@gmail.com>
*
* Copyright (C) 2015, Matthew Waters <matthew@centricular.com>
*
* This library 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
* version 2.1 of the License.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
void ff_mediacodec_sw_buffer_copy_yuv420_planar(AVCodecContext *avctx,
MediaCodecDecContext *s,
uint8_t *data,
size_t size,
FFAMediaCodecBufferInfo *info,
AVFrame *frame)
{
int i;
uint8_t *src = NULL;
for (i = 0; i < 3; i++) {
int stride = s->stride;
int height;
src = data + info->offset;
if (i == 0) {
height = avctx->height;
src += s->crop_top * s->stride;
src += s->crop_left;
} else {
height = avctx->height / 2;
stride = (s->stride + 1) / 2;
src += s->slice_height * s->stride;
if (i == 2) {
src += ((s->slice_height + 1) / 2) * stride;
}
src += s->crop_top * stride;
src += (s->crop_left / 2);
}
if (frame->linesize[i] == stride) {
memcpy(frame->data[i], src, height * stride);
} else {
int j, width;
uint8_t *dst = frame->data[i];
if (i == 0) {
width = avctx->width;
} else if (i >= 1) {
width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2) / 2);
}
for (j = 0; j < height; j++) {
memcpy(dst, src, width);
src += stride;
dst += frame->linesize[i];
}
}
}
}
void ff_mediacodec_sw_buffer_copy_yuv420_semi_planar(AVCodecContext *avctx,
MediaCodecDecContext *s,
uint8_t *data,
size_t size,
FFAMediaCodecBufferInfo *info,
AVFrame *frame)
{
int i;
uint8_t *src = NULL;
for (i = 0; i < 2; i++) {
int height;
src = data + info->offset;
if (i == 0) {
height = avctx->height;
src += s->crop_top * s->stride;
src += s->crop_left;
} else if (i == 1) {
height = avctx->height / 2;
src += s->slice_height * s->stride;
src += s->crop_top * s->stride;
src += s->crop_left;
}
if (frame->linesize[i] == s->stride) {
memcpy(frame->data[i], src, height * s->stride);
} else {
int j, width;
uint8_t *dst = frame->data[i];
if (i == 0) {
width = avctx->width;
} else if (i == 1) {
width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2));
}
for (j = 0; j < height; j++) {
memcpy(dst, src, width);
src += s->stride;
dst += frame->linesize[i];
}
}
}
}
void ff_mediacodec_sw_buffer_copy_yuv420_packed_semi_planar(AVCodecContext *avctx,
MediaCodecDecContext *s,
uint8_t *data,
size_t size,
FFAMediaCodecBufferInfo *info,
AVFrame *frame)
{
int i;
uint8_t *src = NULL;
for (i = 0; i < 2; i++) {
int height;
src = data + info->offset;
if (i == 0) {
height = avctx->height;
} else if (i == 1) {
height = avctx->height / 2;
src += (s->slice_height - s->crop_top / 2) * s->stride;
src += s->crop_top * s->stride;
src += s->crop_left;
}
if (frame->linesize[i] == s->stride) {
memcpy(frame->data[i], src, height * s->stride);
} else {
int j, width;
uint8_t *dst = frame->data[i];
if (i == 0) {
width = avctx->width;
} else if (i == 1) {
width = FFMIN(frame->linesize[i], FFALIGN(avctx->width, 2));
}
for (j = 0; j < height; j++) {
memcpy(dst, src, width);
src += s->stride;
dst += frame->linesize[i];
}
}
}
}
/**
* The code handling the QCOM_FormatYUV420PackedSemiPlanar64x32Tile2m8ka
* color format is taken from the VLC project.
*
* VLC reference:
* http://git.videolan.org/?p=vlc.git;a=blob;f=modules/codec/omxil/qcom.c;hb=HEAD
*
* VLC copyright notice:
*
*****************************************************************************
* qcom.c : pixel format translation for Qualcomm tiled nv12
*****************************************************************************
* Copyright © 2012 Rafaël Carré
*
* Authors: Rafaël Carré <funman@videolanorg>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*
*/
static size_t qcom_tile_pos(size_t x, size_t y, size_t w, size_t h)
{
size_t flim = x + (y & ~1) * w;
if (y & 1) {
flim += (x & ~3) + 2;
} else if ((h & 1) == 0 || y != (h - 1)) {
flim += (x + 2) & ~3;
}
return flim;
}
void ff_mediacodec_sw_buffer_copy_yuv420_packed_semi_planar_64x32Tile2m8ka(AVCodecContext *avctx,
MediaCodecDecContext *s,
uint8_t *data,
size_t size,
FFAMediaCodecBufferInfo *info,
AVFrame *frame)
{
size_t width = frame->width;
size_t linesize = frame->linesize[0];
size_t height = frame->height;
const size_t tile_w = (width - 1) / QCOM_TILE_WIDTH + 1;
const size_t tile_w_align = (tile_w + 1) & ~1;
const size_t tile_h_luma = (height - 1) / QCOM_TILE_HEIGHT + 1;
const size_t tile_h_chroma = (height / 2 - 1) / QCOM_TILE_HEIGHT + 1;
size_t luma_size = tile_w_align * tile_h_luma * QCOM_TILE_SIZE;
if((luma_size % QCOM_TILE_GROUP_SIZE) != 0)
luma_size = (((luma_size - 1) / QCOM_TILE_GROUP_SIZE) + 1) * QCOM_TILE_GROUP_SIZE;
for(size_t y = 0; y < tile_h_luma; y++) {
size_t row_width = width;
for(size_t x = 0; x < tile_w; x++) {
size_t tile_width = row_width;
size_t tile_height = height;
/* dest luma memory index for this tile */
size_t luma_idx = y * QCOM_TILE_HEIGHT * linesize + x * QCOM_TILE_WIDTH;
/* dest chroma memory index for this tile */
/* XXX: remove divisions */
size_t chroma_idx = (luma_idx / linesize) * linesize / 2 + (luma_idx % linesize);
/* luma source pointer for this tile */
const uint8_t *src_luma = data
+ qcom_tile_pos(x, y,tile_w_align, tile_h_luma) * QCOM_TILE_SIZE;
/* chroma source pointer for this tile */
const uint8_t *src_chroma = data + luma_size
+ qcom_tile_pos(x, y/2, tile_w_align, tile_h_chroma) * QCOM_TILE_SIZE;
if (y & 1)
src_chroma += QCOM_TILE_SIZE/2;
/* account for right columns */
if (tile_width > QCOM_TILE_WIDTH)
tile_width = QCOM_TILE_WIDTH;
/* account for bottom rows */
if (tile_height > QCOM_TILE_HEIGHT)
tile_height = QCOM_TILE_HEIGHT;
tile_height /= 2;
while (tile_height--) {
memcpy(frame->data[0] + luma_idx, src_luma, tile_width);
src_luma += QCOM_TILE_WIDTH;
luma_idx += linesize;
memcpy(frame->data[0] + luma_idx, src_luma, tile_width);
src_luma += QCOM_TILE_WIDTH;
luma_idx += linesize;
memcpy(frame->data[1] + chroma_idx, src_chroma, tile_width);
src_chroma += QCOM_TILE_WIDTH;
chroma_idx += linesize;
}
row_width -= QCOM_TILE_WIDTH;
}
height -= QCOM_TILE_HEIGHT;
}
}
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