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Diffstat (limited to 'src/libffmpeg/libavcodec/qpeg.c')
-rw-r--r--src/libffmpeg/libavcodec/qpeg.c324
1 files changed, 0 insertions, 324 deletions
diff --git a/src/libffmpeg/libavcodec/qpeg.c b/src/libffmpeg/libavcodec/qpeg.c
deleted file mode 100644
index 3c597e8df..000000000
--- a/src/libffmpeg/libavcodec/qpeg.c
+++ /dev/null
@@ -1,324 +0,0 @@
-/*
- * QPEG codec
- * Copyright (c) 2004 Konstantin Shishkov
- *
- * 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
- *
- */
-
-/**
- * @file qpeg.c
- * QPEG codec.
- */
-
-#include "avcodec.h"
-#include "mpegvideo.h"
-
-typedef struct QpegContext{
- AVCodecContext *avctx;
- AVFrame pic;
- uint8_t *refdata;
-} QpegContext;
-
-static void qpeg_decode_intra(uint8_t *src, uint8_t *dst, int size,
- int stride, int width, int height)
-{
- int i;
- int code;
- int c0, c1;
- int run, copy;
- int filled = 0;
- int rows_to_go;
-
- rows_to_go = height;
- height--;
- dst = dst + height * stride;
-
- while((size > 0) && (rows_to_go > 0)) {
- code = *src++;
- size--;
- run = copy = 0;
- if(code == 0xFC) /* end-of-picture code */
- break;
- if(code >= 0xF8) { /* very long run */
- c0 = *src++;
- c1 = *src++;
- size -= 2;
- run = ((code & 0x7) << 16) + (c0 << 8) + c1 + 2;
- } else if (code >= 0xF0) { /* long run */
- c0 = *src++;
- size--;
- run = ((code & 0xF) << 8) + c0 + 2;
- } else if (code >= 0xE0) { /* short run */
- run = (code & 0x1F) + 2;
- } else if (code >= 0xC0) { /* very long copy */
- c0 = *src++;
- c1 = *src++;
- size -= 2;
- copy = ((code & 0x3F) << 16) + (c0 << 8) + c1 + 1;
- } else if (code >= 0x80) { /* long copy */
- c0 = *src++;
- size--;
- copy = ((code & 0x7F) << 8) + c0 + 1;
- } else { /* short copy */
- copy = code + 1;
- }
-
- /* perform actual run or copy */
- if(run) {
- int p;
-
- p = *src++;
- size--;
- for(i = 0; i < run; i++) {
- dst[filled++] = p;
- if (filled >= width) {
- filled = 0;
- dst -= stride;
- rows_to_go--;
- if(rows_to_go <= 0)
- break;
- }
- }
- } else {
- size -= copy;
- for(i = 0; i < copy; i++) {
- dst[filled++] = *src++;
- if (filled >= width) {
- filled = 0;
- dst -= stride;
- rows_to_go--;
- if(rows_to_go <= 0)
- break;
- }
- }
- }
- }
-}
-
-static int qpeg_table_h[16] =
- { 0x00, 0x20, 0x20, 0x20, 0x18, 0x10, 0x10, 0x20, 0x10, 0x08, 0x18, 0x08, 0x08, 0x18, 0x10, 0x04};
-static int qpeg_table_w[16] =
- { 0x00, 0x20, 0x18, 0x08, 0x18, 0x10, 0x20, 0x10, 0x08, 0x10, 0x20, 0x20, 0x08, 0x10, 0x18, 0x04};
-
-/* Decodes delta frames */
-static void qpeg_decode_inter(uint8_t *src, uint8_t *dst, int size,
- int stride, int width, int height,
- int delta, uint8_t *ctable, uint8_t *refdata)
-{
- int i, j;
- int code;
- int filled = 0;
- int orig_height;
- uint8_t *blkdata;
-
- /* copy prev frame */
- for(i = 0; i < height; i++)
- memcpy(refdata + (i * width), dst + (i * stride), width);
-
- orig_height = height;
- blkdata = src - 0x86;
- height--;
- dst = dst + height * stride;
-
- while((size > 0) && (height >= 0)) {
- code = *src++;
- size--;
-
- if(delta) {
- /* motion compensation */
- while((code & 0xF0) == 0xF0) {
- if(delta == 1) {
- int me_idx;
- int me_w, me_h, me_x, me_y;
- uint8_t *me_plane;
- int corr, val;
-
- /* get block size by index */
- me_idx = code & 0xF;
- me_w = qpeg_table_w[me_idx];
- me_h = qpeg_table_h[me_idx];
-
- /* extract motion vector */
- corr = *src++;
- size--;
-
- val = corr >> 4;
- if(val > 7)
- val -= 16;
- me_x = val;
-
- val = corr & 0xF;
- if(val > 7)
- val -= 16;
- me_y = val;
-
- /* check motion vector */
- if ((me_x + filled < 0) || (me_x + me_w + filled > width) ||
- (height - me_y - me_h < 0) || (height - me_y > orig_height) ||
- (filled + me_w > width) || (height - me_h < 0))
- av_log(NULL, AV_LOG_ERROR, "Bogus motion vector (%i,%i), block size %ix%i at %i,%i\n",
- me_x, me_y, me_w, me_h, filled, height);
- else {
- /* do motion compensation */
- me_plane = refdata + (filled + me_x) + (height - me_y) * width;
- for(j = 0; j < me_h; j++) {
- for(i = 0; i < me_w; i++)
- dst[filled + i - (j * stride)] = me_plane[i - (j * width)];
- }
- }
- }
- code = *src++;
- size--;
- }
- }
-
- if(code == 0xE0) /* end-of-picture code */
- break;
- if(code > 0xE0) { /* run code: 0xE1..0xFF */
- int p;
-
- code &= 0x1F;
- p = *src++;
- size--;
- for(i = 0; i <= code; i++) {
- dst[filled++] = p;
- if(filled >= width) {
- filled = 0;
- dst -= stride;
- height--;
- }
- }
- } else if(code >= 0xC0) { /* copy code: 0xC0..0xDF */
- code &= 0x1F;
-
- for(i = 0; i <= code; i++) {
- dst[filled++] = *src++;
- if(filled >= width) {
- filled = 0;
- dst -= stride;
- height--;
- }
- }
- size -= code + 1;
- } else if(code >= 0x80) { /* skip code: 0x80..0xBF */
- int skip;
-
- code &= 0x3F;
- /* codes 0x80 and 0x81 are actually escape codes,
- skip value minus constant is in the next byte */
- if(!code)
- skip = (*src++) + 64;
- else if(code == 1)
- skip = (*src++) + 320;
- else
- skip = code;
- filled += skip;
- while( filled >= width) {
- filled -= width;
- dst -= stride;
- height--;
- if(height < 0)
- break;
- }
- } else {
- /* zero code treated as one-pixel skip */
- if(code)
- dst[filled++] = ctable[code & 0x7F];
- else
- filled++;
- if(filled >= width) {
- filled = 0;
- dst -= stride;
- height--;
- }
- }
- }
-}
-
-static int decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- QpegContext * const a = avctx->priv_data;
- AVFrame * const p= (AVFrame*)&a->pic;
- uint8_t* outdata;
- int delta;
-
- if(p->data[0])
- avctx->release_buffer(avctx, p);
-
- p->reference= 0;
- if(avctx->get_buffer(avctx, p) < 0){
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
- outdata = a->pic.data[0];
- if(buf[0x85] == 0x10) {
- qpeg_decode_intra(buf+0x86, outdata, buf_size - 0x86, a->pic.linesize[0], avctx->width, avctx->height);
- } else {
- delta = buf[0x85];
- qpeg_decode_inter(buf+0x86, outdata, buf_size - 0x86, a->pic.linesize[0], avctx->width, avctx->height, delta, buf + 4, a->refdata);
- }
-
- /* make the palette available on the way out */
- memcpy(a->pic.data[1], a->avctx->palctrl->palette, AVPALETTE_SIZE);
- if (a->avctx->palctrl->palette_changed) {
- a->pic.palette_has_changed = 1;
- a->avctx->palctrl->palette_changed = 0;
- }
-
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = a->pic;
-
- return buf_size;
-}
-
-static int decode_init(AVCodecContext *avctx){
- QpegContext * const a = avctx->priv_data;
-
- a->avctx = avctx;
- avctx->pix_fmt= PIX_FMT_PAL8;
- avctx->has_b_frames = 0;
- a->pic.data[0] = NULL;
- a->refdata = av_malloc(avctx->width * avctx->height);
-
- return 0;
-}
-
-static int decode_end(AVCodecContext *avctx){
- QpegContext * const a = avctx->priv_data;
- AVFrame * const p= (AVFrame*)&a->pic;
-
- if(p->data[0])
- avctx->release_buffer(avctx, p);
-
- av_free(a->refdata);
- return 0;
-}
-
-AVCodec qpeg_decoder = {
- "qpeg",
- CODEC_TYPE_VIDEO,
- CODEC_ID_QPEG,
- sizeof(QpegContext),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_DR1,
-};
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