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-rw-r--r--contrib/ffmpeg/libavcodec/flashsvenc.c346
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diff --git a/contrib/ffmpeg/libavcodec/flashsvenc.c b/contrib/ffmpeg/libavcodec/flashsvenc.c
deleted file mode 100644
index cbf488328..000000000
--- a/contrib/ffmpeg/libavcodec/flashsvenc.c
+++ /dev/null
@@ -1,346 +0,0 @@
-/*
- * Flash Screen Video encoder
- * Copyright (C) 2004 Alex Beregszaszi
- * Copyright (C) 2006 Benjamin Larsson
- *
- * 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
- */
-
-/* Encoding development sponsored by http://fh-campuswien.ac.at */
-
-/**
- * @file flashsvenc.c
- * Flash Screen Video encoder
- * @author Alex Beregszaszi
- * @author Benjamin Larsson
- */
-
-/* Bitstream description
- * The picture is divided into blocks that are zlib-compressed.
- *
- * The decoder is fed complete frames, the frameheader contains:
- * 4bits of block width
- * 12bits of frame width
- * 4bits of block height
- * 12bits of frame height
- *
- * Directly after the header are the compressed blocks. The blocks
- * have their compressed size represented with 16bits in the beginig.
- * If the size = 0 then the block is unchanged from the previous frame.
- * All blocks are decompressed until the buffer is consumed.
- *
- * Encoding ideas, a basic encoder would just use a fixed block size.
- * Block sizes can be multipels of 16, from 16 to 256. The blocks don't
- * have to be quadratic. A brute force search with a set of different
- * block sizes should give a better result than to just use a fixed size.
- */
-
-/* TODO:
- * Don't reencode the frame in brute force mode if the frame is a dupe. Speed up.
- * Make the difference check faster.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <zlib.h>
-
-#include "common.h"
-#include "avcodec.h"
-#include "bitstream.h"
-#include "bytestream.h"
-
-
-typedef struct FlashSVContext {
- AVCodecContext *avctx;
- uint8_t *previous_frame;
- AVFrame frame;
- int image_width, image_height;
- int block_width, block_height;
- uint8_t* tmpblock;
- uint8_t* encbuffer;
- int block_size;
- z_stream zstream;
- int last_key_frame;
-} FlashSVContext;
-
-static int copy_region_enc(uint8_t *sptr, uint8_t *dptr,
- int dx, int dy, int h, int w, int stride, uint8_t *pfptr) {
- int i,j;
- uint8_t *nsptr;
- uint8_t *npfptr;
- int diff = 0;
-
- for (i = dx+h; i > dx; i--) {
- nsptr = sptr+(i*stride)+dy*3;
- npfptr = pfptr+(i*stride)+dy*3;
- for (j=0 ; j<w*3 ; j++) {
- diff |=npfptr[j]^nsptr[j];
- dptr[j] = nsptr[j];
- }
- dptr += w*3;
- }
- if (diff)
- return 1;
- return 0;
-}
-
-static int flashsv_encode_init(AVCodecContext *avctx)
-{
- FlashSVContext *s = (FlashSVContext *)avctx->priv_data;
-
- s->avctx = avctx;
-
- if ((avctx->width > 4095) || (avctx->height > 4095)) {
- av_log(avctx, AV_LOG_ERROR, "Input dimensions too large, input must be max 4096x4096 !\n");
- return -1;
- }
-
- if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
- return -1;
- }
-
- // Needed if zlib unused or init aborted before deflateInit
- memset(&(s->zstream), 0, sizeof(z_stream));
-/*
- s->zstream.zalloc = NULL; //av_malloc;
- s->zstream.zfree = NULL; //av_free;
- s->zstream.opaque = NULL;
- zret = deflateInit(&(s->zstream), 9);
- if (zret != Z_OK) {
- av_log(avctx, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
- return -1;
- }
-*/
-
- s->last_key_frame=0;
-
- s->image_width = avctx->width;
- s->image_height = avctx->height;
-
- s->tmpblock = av_mallocz(3*256*256);
- s->encbuffer = av_mallocz(s->image_width*s->image_height*3);
-
- if (!s->tmpblock || !s->encbuffer) {
- av_log(avctx, AV_LOG_ERROR, "Memory allocation failed.\n");
- return -1;
- }
-
- return 0;
-}
-
-
-static int encode_bitstream(FlashSVContext *s, AVFrame *p, uint8_t *buf, int buf_size,
- int block_width, int block_height, uint8_t *previous_frame, int* I_frame) {
-
- PutBitContext pb;
- int h_blocks, v_blocks, h_part, v_part, i, j;
- int buf_pos, res;
- int pred_blocks = 0;
-
- init_put_bits(&pb, buf, buf_size*8);
-
- put_bits(&pb, 4, (block_width/16)-1);
- put_bits(&pb, 12, s->image_width);
- put_bits(&pb, 4, (block_height/16)-1);
- put_bits(&pb, 12, s->image_height);
- flush_put_bits(&pb);
- buf_pos=4;
-
- h_blocks = s->image_width / block_width;
- h_part = s->image_width % block_width;
- v_blocks = s->image_height / block_height;
- v_part = s->image_height % block_height;
-
- /* loop over all block columns */
- for (j = 0; j < v_blocks + (v_part?1:0); j++)
- {
-
- int hp = j*block_height; // horiz position in frame
- int hs = (j<v_blocks)?block_height:v_part; // size of block
-
- /* loop over all block rows */
- for (i = 0; i < h_blocks + (h_part?1:0); i++)
- {
- int wp = i*block_width; // vert position in frame
- int ws = (i<h_blocks)?block_width:h_part; // size of block
- int ret=Z_OK;
- uint8_t *ptr;
-
- ptr = buf+buf_pos;
-
- //copy the block to the temp buffer before compression (if it differs from the previous frame's block)
- res = copy_region_enc(p->data[0], s->tmpblock, s->image_height-(hp+hs+1), wp, hs, ws, p->linesize[0], previous_frame);
-
- if (res || *I_frame) {
- unsigned long zsize;
- zsize = 3*block_width*block_height;
- ret = compress2(ptr+2, &zsize, s->tmpblock, 3*ws*hs, 9);
-
-
- //ret = deflateReset(&(s->zstream));
- if (ret != Z_OK)
- av_log(s->avctx, AV_LOG_ERROR, "error while compressing block %dx%d\n", i, j);
- /*
- s->zstream.next_in = s->tmpblock;
- s->zstream.avail_in = 3*ws*hs;
- s->zstream.total_in = 0;
-
- s->zstream.next_out = ptr+2;
- s->zstream.avail_out = buf_size-buf_pos-2;
- s->zstream.total_out = 0;
-
- ret = deflate(&(s->zstream), Z_FINISH);
- if ((ret != Z_OK) && (ret != Z_STREAM_END))
- av_log(s->avctx, AV_LOG_ERROR, "error while compressing block %dx%d\n", i, j);
-
- size = s->zstream.total_out;
- //av_log(avctx, AV_LOG_INFO, "compressed blocks: %d\n", size);
- */
- bytestream_put_be16(&ptr,(unsigned int)zsize);
- buf_pos += zsize+2;
- //av_log(avctx, AV_LOG_ERROR, "buf_pos = %d\n", buf_pos);
- } else {
- pred_blocks++;
- bytestream_put_be16(&ptr,0);
- buf_pos += 2;
- }
- }
- }
-
- if (pred_blocks)
- *I_frame = 0;
- else
- *I_frame = 1;
-
- return buf_pos;
-}
-
-
-static int flashsv_encode_frame(AVCodecContext *avctx, uint8_t *buf, int buf_size, void *data)
-{
- FlashSVContext * const s = (FlashSVContext *)avctx->priv_data;
- AVFrame *pict = data;
- AVFrame * const p = &s->frame;
- int res;
- int I_frame = 0;
- int opt_w, opt_h;
-
- *p = *pict;
-
- /* First frame needs to be a keyframe */
- if (avctx->frame_number == 0) {
- s->previous_frame = av_mallocz(p->linesize[0]*s->image_height);
- if (!s->previous_frame) {
- av_log(avctx, AV_LOG_ERROR, "Memory allocation failed.\n");
- return -1;
- }
- I_frame = 1;
- }
-
- /* Check the placement of keyframes */
- if (avctx->gop_size > 0) {
- if (avctx->frame_number >= s->last_key_frame + avctx->gop_size) {
- I_frame = 1;
- }
- }
-
-#if 0
- int w, h;
- int optim_sizes[16][16];
- int smallest_size;
- //Try all possible combinations and store the encoded frame sizes
- for (w=1 ; w<17 ; w++) {
- for (h=1 ; h<17 ; h++) {
- optim_sizes[w-1][h-1] = encode_bitstream(s, p, s->encbuffer, s->image_width*s->image_height*4, w*16, h*16, s->previous_frame);
- //av_log(avctx, AV_LOG_ERROR, "[%d][%d]size = %d\n",w,h,optim_sizes[w-1][h-1]);
- }
- }
-
- //Search for the smallest framesize and encode the frame with those parameters
- smallest_size=optim_sizes[0][0];
- opt_w = 0;
- opt_h = 0;
- for (w=0 ; w<16 ; w++) {
- for (h=0 ; h<16 ; h++) {
- if (optim_sizes[w][h] < smallest_size) {
- smallest_size = optim_sizes[w][h];
- opt_w = w;
- opt_h = h;
- }
- }
- }
- res = encode_bitstream(s, p, buf, buf_size, (opt_w+1)*16, (opt_h+1)*16, s->previous_frame);
- av_log(avctx, AV_LOG_ERROR, "[%d][%d]optimal size = %d, res = %d|\n", opt_w, opt_h, smallest_size, res);
-
- if (buf_size < res)
- av_log(avctx, AV_LOG_ERROR, "buf_size %d < res %d\n", buf_size, res);
-
-#else
- opt_w=1;
- opt_h=1;
-
- if (buf_size < s->image_width*s->image_height*3) {
- //Conservative upper bound check for compressed data
- av_log(avctx, AV_LOG_ERROR, "buf_size %d < %d\n", buf_size, s->image_width*s->image_height*3);
- return -1;
- }
-
- res = encode_bitstream(s, p, buf, buf_size, opt_w*16, opt_h*16, s->previous_frame, &I_frame);
-#endif
- //save the current frame
- memcpy(s->previous_frame, p->data[0], s->image_height*p->linesize[0]);
-
- //mark the frame type so the muxer can mux it correctly
- if (I_frame) {
- p->pict_type = FF_I_TYPE;
- p->key_frame = 1;
- s->last_key_frame = avctx->frame_number;
- av_log(avctx, AV_LOG_DEBUG, "Inserting key frame at frame %d\n",avctx->frame_number);
- } else {
- p->pict_type = FF_P_TYPE;
- p->key_frame = 0;
- }
-
- avctx->coded_frame = p;
-
- return res;
-}
-
-static int flashsv_encode_end(AVCodecContext *avctx)
-{
- FlashSVContext *s = (FlashSVContext *)avctx->priv_data;
-
- deflateEnd(&(s->zstream));
-
- av_free(s->encbuffer);
- av_free(s->previous_frame);
- av_free(s->tmpblock);
-
- return 0;
-}
-
-AVCodec flashsv_encoder = {
- "flashsv",
- CODEC_TYPE_VIDEO,
- CODEC_ID_FLASHSV,
- sizeof(FlashSVContext),
- flashsv_encode_init,
- flashsv_encode_frame,
- flashsv_encode_end,
- .pix_fmts = (enum PixelFormat[]){PIX_FMT_BGR24, -1},
-};
-
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