603 lines
20 KiB
C
603 lines
20 KiB
C
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/*
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* Quicktime Animation (RLE) Video Decoder
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* Copyright (C) 2004 The FFmpeg project
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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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/**
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* @file
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* QT RLE Video Decoder by Mike Melanson (melanson@pcisys.net)
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* For more information about the QT RLE format, visit:
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* http://www.pcisys.net/~melanson/codecs/
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*
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* The QT RLE decoder has seven modes of operation:
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* 1, 2, 4, 8, 16, 24, and 32 bits per pixel. For modes 1, 2, 4, and 8
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* the decoder outputs PAL8 colorspace data. 16-bit data yields RGB555
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* data. 24-bit data is RGB24 and 32-bit data is RGB32.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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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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typedef struct QtrleContext {
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AVCodecContext *avctx;
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AVFrame *frame;
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GetByteContext g;
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uint32_t pal[256];
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} QtrleContext;
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#define CHECK_PIXEL_PTR(n) \
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if ((pixel_ptr + n > pixel_limit) || (pixel_ptr + n < 0)) { \
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av_log (s->avctx, AV_LOG_ERROR, "Problem: pixel_ptr = %d, pixel_limit = %d\n",\
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pixel_ptr + n, pixel_limit); \
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return; \
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} \
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static void qtrle_decode_1bpp(QtrleContext *s, int row_ptr, int lines_to_change)
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{
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int rle_code;
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int pixel_ptr;
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int row_inc = s->frame->linesize[0];
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uint8_t pi0, pi1; /* 2 8-pixel values */
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uint8_t *rgb = s->frame->data[0];
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int pixel_limit = s->frame->linesize[0] * s->avctx->height;
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int skip;
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/* skip & 0x80 appears to mean 'start a new line', which can be interpreted
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* as 'go to next line' during the decoding of a frame but is 'go to first
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* line' at the beginning. Since we always interpret it as 'go to next line'
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* in the decoding loop (which makes code simpler/faster), the first line
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* would not be counted, so we count one more.
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* See: https://trac.ffmpeg.org/ticket/226
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* In the following decoding loop, row_ptr will be the position of the
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* current row. */
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row_ptr -= row_inc;
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pixel_ptr = row_ptr;
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lines_to_change++;
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while (lines_to_change) {
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skip = bytestream2_get_byte(&s->g);
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rle_code = (int8_t)bytestream2_get_byte(&s->g);
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if (rle_code == 0)
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break;
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if(skip & 0x80) {
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lines_to_change--;
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row_ptr += row_inc;
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pixel_ptr = row_ptr + 2 * 8 * (skip & 0x7f);
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} else
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pixel_ptr += 2 * 8 * skip;
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CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
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if(rle_code == -1)
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continue;
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if (rle_code < 0) {
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/* decode the run length code */
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rle_code = -rle_code;
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/* get the next 2 bytes from the stream, treat them as groups
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* of 8 pixels, and output them rle_code times */
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pi0 = bytestream2_get_byte(&s->g);
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pi1 = bytestream2_get_byte(&s->g);
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CHECK_PIXEL_PTR(rle_code * 2 * 8);
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while (rle_code--) {
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rgb[pixel_ptr++] = (pi0 >> 7) & 0x01;
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rgb[pixel_ptr++] = (pi0 >> 6) & 0x01;
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rgb[pixel_ptr++] = (pi0 >> 5) & 0x01;
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rgb[pixel_ptr++] = (pi0 >> 4) & 0x01;
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rgb[pixel_ptr++] = (pi0 >> 3) & 0x01;
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rgb[pixel_ptr++] = (pi0 >> 2) & 0x01;
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rgb[pixel_ptr++] = (pi0 >> 1) & 0x01;
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rgb[pixel_ptr++] = pi0 & 0x01;
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rgb[pixel_ptr++] = (pi1 >> 7) & 0x01;
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rgb[pixel_ptr++] = (pi1 >> 6) & 0x01;
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rgb[pixel_ptr++] = (pi1 >> 5) & 0x01;
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rgb[pixel_ptr++] = (pi1 >> 4) & 0x01;
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rgb[pixel_ptr++] = (pi1 >> 3) & 0x01;
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rgb[pixel_ptr++] = (pi1 >> 2) & 0x01;
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rgb[pixel_ptr++] = (pi1 >> 1) & 0x01;
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rgb[pixel_ptr++] = pi1 & 0x01;
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}
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} else {
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/* copy the same pixel directly to output 2 times */
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rle_code *= 2;
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CHECK_PIXEL_PTR(rle_code * 8);
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while (rle_code--) {
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int x = bytestream2_get_byte(&s->g);
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rgb[pixel_ptr++] = (x >> 7) & 0x01;
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rgb[pixel_ptr++] = (x >> 6) & 0x01;
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rgb[pixel_ptr++] = (x >> 5) & 0x01;
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rgb[pixel_ptr++] = (x >> 4) & 0x01;
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rgb[pixel_ptr++] = (x >> 3) & 0x01;
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rgb[pixel_ptr++] = (x >> 2) & 0x01;
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rgb[pixel_ptr++] = (x >> 1) & 0x01;
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rgb[pixel_ptr++] = x & 0x01;
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}
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}
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}
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}
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static inline void qtrle_decode_2n4bpp(QtrleContext *s, int row_ptr,
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int lines_to_change, int bpp)
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{
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int rle_code, i;
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int pixel_ptr;
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int row_inc = s->frame->linesize[0];
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uint8_t pi[16]; /* 16 palette indices */
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uint8_t *rgb = s->frame->data[0];
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int pixel_limit = s->frame->linesize[0] * s->avctx->height;
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int num_pixels = (bpp == 4) ? 8 : 16;
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while (lines_to_change--) {
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pixel_ptr = row_ptr + (num_pixels * (bytestream2_get_byte(&s->g) - 1));
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CHECK_PIXEL_PTR(0);
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while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
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if (bytestream2_get_bytes_left(&s->g) < 1)
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return;
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if (rle_code == 0) {
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/* there's another skip code in the stream */
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pixel_ptr += (num_pixels * (bytestream2_get_byte(&s->g) - 1));
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CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
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} else if (rle_code < 0) {
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/* decode the run length code */
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rle_code = -rle_code;
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/* get the next 4 bytes from the stream, treat them as palette
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* indexes, and output them rle_code times */
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for (i = num_pixels-1; i >= 0; i--) {
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pi[num_pixels-1-i] = (bytestream2_peek_byte(&s->g) >> ((i*bpp) & 0x07)) & ((1<<bpp)-1);
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bytestream2_skip(&s->g, ((i & ((num_pixels>>2)-1)) == 0));
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}
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CHECK_PIXEL_PTR(rle_code * num_pixels);
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while (rle_code--) {
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memcpy(&rgb[pixel_ptr], &pi, num_pixels);
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pixel_ptr += num_pixels;
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}
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} else {
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/* copy the same pixel directly to output 4 times */
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rle_code *= 4;
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CHECK_PIXEL_PTR(rle_code*(num_pixels>>2));
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while (rle_code--) {
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if(bpp == 4) {
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int x = bytestream2_get_byte(&s->g);
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rgb[pixel_ptr++] = (x >> 4) & 0x0f;
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rgb[pixel_ptr++] = x & 0x0f;
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} else {
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int x = bytestream2_get_byte(&s->g);
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rgb[pixel_ptr++] = (x >> 6) & 0x03;
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rgb[pixel_ptr++] = (x >> 4) & 0x03;
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rgb[pixel_ptr++] = (x >> 2) & 0x03;
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rgb[pixel_ptr++] = x & 0x03;
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}
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}
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}
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}
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row_ptr += row_inc;
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}
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}
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static void qtrle_decode_8bpp(QtrleContext *s, int row_ptr, int lines_to_change)
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{
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int rle_code;
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int pixel_ptr;
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int row_inc = s->frame->linesize[0];
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uint8_t pi1, pi2, pi3, pi4; /* 4 palette indexes */
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uint8_t *rgb = s->frame->data[0];
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int pixel_limit = s->frame->linesize[0] * s->avctx->height;
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while (lines_to_change--) {
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pixel_ptr = row_ptr + (4 * (bytestream2_get_byte(&s->g) - 1));
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CHECK_PIXEL_PTR(0);
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while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
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if (bytestream2_get_bytes_left(&s->g) < 1)
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return;
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if (rle_code == 0) {
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/* there's another skip code in the stream */
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pixel_ptr += (4 * (bytestream2_get_byte(&s->g) - 1));
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CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
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} else if (rle_code < 0) {
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/* decode the run length code */
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rle_code = -rle_code;
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/* get the next 4 bytes from the stream, treat them as palette
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* indexes, and output them rle_code times */
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pi1 = bytestream2_get_byte(&s->g);
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pi2 = bytestream2_get_byte(&s->g);
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pi3 = bytestream2_get_byte(&s->g);
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pi4 = bytestream2_get_byte(&s->g);
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CHECK_PIXEL_PTR(rle_code * 4);
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while (rle_code--) {
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rgb[pixel_ptr++] = pi1;
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rgb[pixel_ptr++] = pi2;
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rgb[pixel_ptr++] = pi3;
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rgb[pixel_ptr++] = pi4;
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}
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} else {
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/* copy the same pixel directly to output 4 times */
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rle_code *= 4;
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CHECK_PIXEL_PTR(rle_code);
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bytestream2_get_buffer(&s->g, &rgb[pixel_ptr], rle_code);
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pixel_ptr += rle_code;
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}
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}
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row_ptr += row_inc;
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}
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}
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static void qtrle_decode_16bpp(QtrleContext *s, int row_ptr, int lines_to_change)
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{
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int rle_code;
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int pixel_ptr;
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int row_inc = s->frame->linesize[0];
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uint16_t rgb16;
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uint8_t *rgb = s->frame->data[0];
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int pixel_limit = s->frame->linesize[0] * s->avctx->height;
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while (lines_to_change--) {
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pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 2;
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CHECK_PIXEL_PTR(0);
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while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
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if (bytestream2_get_bytes_left(&s->g) < 1)
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return;
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if (rle_code == 0) {
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/* there's another skip code in the stream */
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pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 2;
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CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
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} else if (rle_code < 0) {
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/* decode the run length code */
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rle_code = -rle_code;
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rgb16 = bytestream2_get_be16(&s->g);
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CHECK_PIXEL_PTR(rle_code * 2);
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while (rle_code--) {
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*(uint16_t *)(&rgb[pixel_ptr]) = rgb16;
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pixel_ptr += 2;
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}
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} else {
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CHECK_PIXEL_PTR(rle_code * 2);
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/* copy pixels directly to output */
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while (rle_code--) {
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rgb16 = bytestream2_get_be16(&s->g);
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*(uint16_t *)(&rgb[pixel_ptr]) = rgb16;
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pixel_ptr += 2;
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}
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}
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}
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row_ptr += row_inc;
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}
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}
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static void qtrle_decode_24bpp(QtrleContext *s, int row_ptr, int lines_to_change)
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{
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int rle_code, rle_code_half;
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int pixel_ptr;
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int row_inc = s->frame->linesize[0];
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uint8_t b;
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uint16_t rg;
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uint8_t *rgb = s->frame->data[0];
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int pixel_limit = s->frame->linesize[0] * s->avctx->height;
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while (lines_to_change--) {
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pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 3;
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CHECK_PIXEL_PTR(0);
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while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
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if (bytestream2_get_bytes_left(&s->g) < 1)
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return;
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if (rle_code == 0) {
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/* there's another skip code in the stream */
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pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 3;
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CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
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} else if (rle_code < 0) {
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/* decode the run length code */
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rle_code = -rle_code;
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rg = bytestream2_get_ne16(&s->g);
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b = bytestream2_get_byte(&s->g);
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CHECK_PIXEL_PTR(rle_code * 3);
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while (rle_code--) {
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AV_WN16(rgb + pixel_ptr, rg);
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rgb[pixel_ptr + 2] = b;
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pixel_ptr += 3;
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}
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} else {
|
||
|
|
CHECK_PIXEL_PTR(rle_code * 3);
|
||
|
|
|
||
|
|
rle_code_half = rle_code / 2;
|
||
|
|
|
||
|
|
while (rle_code_half--) { /* copy 2 raw rgb value at the same time */
|
||
|
|
AV_WN32(rgb + pixel_ptr, bytestream2_get_ne32(&s->g)); /* rgbr */
|
||
|
|
AV_WN16(rgb + pixel_ptr + 4, bytestream2_get_ne16(&s->g)); /* rgbr */
|
||
|
|
pixel_ptr += 6;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (rle_code % 2 != 0){ /* not even raw value */
|
||
|
|
AV_WN16(rgb + pixel_ptr, bytestream2_get_ne16(&s->g));
|
||
|
|
rgb[pixel_ptr + 2] = bytestream2_get_byte(&s->g);
|
||
|
|
pixel_ptr += 3;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
row_ptr += row_inc;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void qtrle_decode_32bpp(QtrleContext *s, int row_ptr, int lines_to_change)
|
||
|
|
{
|
||
|
|
int rle_code, rle_code_half;
|
||
|
|
int pixel_ptr;
|
||
|
|
int row_inc = s->frame->linesize[0];
|
||
|
|
unsigned int argb;
|
||
|
|
uint8_t *rgb = s->frame->data[0];
|
||
|
|
int pixel_limit = s->frame->linesize[0] * s->avctx->height;
|
||
|
|
|
||
|
|
while (lines_to_change--) {
|
||
|
|
pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 4;
|
||
|
|
CHECK_PIXEL_PTR(0);
|
||
|
|
|
||
|
|
while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
|
||
|
|
if (bytestream2_get_bytes_left(&s->g) < 1)
|
||
|
|
return;
|
||
|
|
if (rle_code == 0) {
|
||
|
|
/* there's another skip code in the stream */
|
||
|
|
pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 4;
|
||
|
|
CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
|
||
|
|
} else if (rle_code < 0) {
|
||
|
|
/* decode the run length code */
|
||
|
|
rle_code = -rle_code;
|
||
|
|
argb = bytestream2_get_ne32(&s->g);
|
||
|
|
|
||
|
|
CHECK_PIXEL_PTR(rle_code * 4);
|
||
|
|
|
||
|
|
while (rle_code--) {
|
||
|
|
AV_WN32A(rgb + pixel_ptr, argb);
|
||
|
|
pixel_ptr += 4;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
CHECK_PIXEL_PTR(rle_code * 4);
|
||
|
|
|
||
|
|
/* copy pixels directly to output */
|
||
|
|
rle_code_half = rle_code / 2;
|
||
|
|
while (rle_code_half--) { /* copy 2 argb raw value at the same time */
|
||
|
|
AV_WN64(rgb + pixel_ptr, bytestream2_get_ne64(&s->g));
|
||
|
|
pixel_ptr += 8;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (rle_code % 2 != 0){ /* not even raw value */
|
||
|
|
AV_WN32A(rgb + pixel_ptr, bytestream2_get_ne32(&s->g));
|
||
|
|
pixel_ptr += 4;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
row_ptr += row_inc;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static av_cold int qtrle_decode_init(AVCodecContext *avctx)
|
||
|
|
{
|
||
|
|
QtrleContext *s = avctx->priv_data;
|
||
|
|
|
||
|
|
s->avctx = avctx;
|
||
|
|
switch (avctx->bits_per_coded_sample) {
|
||
|
|
case 1:
|
||
|
|
case 2:
|
||
|
|
case 4:
|
||
|
|
case 8:
|
||
|
|
case 33:
|
||
|
|
case 34:
|
||
|
|
case 36:
|
||
|
|
case 40:
|
||
|
|
avctx->pix_fmt = AV_PIX_FMT_PAL8;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 16:
|
||
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB555;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 24:
|
||
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB24;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 32:
|
||
|
|
avctx->pix_fmt = AV_PIX_FMT_ARGB;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
av_log (avctx, AV_LOG_ERROR, "Unsupported colorspace: %d bits/sample?\n",
|
||
|
|
avctx->bits_per_coded_sample);
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
s->frame = av_frame_alloc();
|
||
|
|
if (!s->frame)
|
||
|
|
return AVERROR(ENOMEM);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int qtrle_decode_frame(AVCodecContext *avctx,
|
||
|
|
void *data, int *got_frame,
|
||
|
|
AVPacket *avpkt)
|
||
|
|
{
|
||
|
|
QtrleContext *s = avctx->priv_data;
|
||
|
|
int header, start_line;
|
||
|
|
int height, row_ptr;
|
||
|
|
int has_palette = 0;
|
||
|
|
int duplicate = 0;
|
||
|
|
int ret, size;
|
||
|
|
|
||
|
|
bytestream2_init(&s->g, avpkt->data, avpkt->size);
|
||
|
|
|
||
|
|
/* check if this frame is even supposed to change */
|
||
|
|
if (avpkt->size < 8) {
|
||
|
|
duplicate = 1;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* start after the chunk size */
|
||
|
|
size = bytestream2_get_be32(&s->g) & 0x3FFFFFFF;
|
||
|
|
if (size - avpkt->size > size * (int64_t)avctx->discard_damaged_percentage / 100)
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
|
||
|
|
|
||
|
|
/* fetch the header */
|
||
|
|
header = bytestream2_get_be16(&s->g);
|
||
|
|
|
||
|
|
/* if a header is present, fetch additional decoding parameters */
|
||
|
|
if (header & 0x0008) {
|
||
|
|
if (avpkt->size < 14) {
|
||
|
|
duplicate = 1;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
start_line = bytestream2_get_be16(&s->g);
|
||
|
|
bytestream2_skip(&s->g, 2);
|
||
|
|
height = bytestream2_get_be16(&s->g);
|
||
|
|
bytestream2_skip(&s->g, 2);
|
||
|
|
if (height > s->avctx->height - start_line) {
|
||
|
|
duplicate = 1;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
start_line = 0;
|
||
|
|
height = s->avctx->height;
|
||
|
|
}
|
||
|
|
if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
row_ptr = s->frame->linesize[0] * start_line;
|
||
|
|
|
||
|
|
switch (avctx->bits_per_coded_sample) {
|
||
|
|
case 1:
|
||
|
|
case 33:
|
||
|
|
qtrle_decode_1bpp(s, row_ptr, height);
|
||
|
|
has_palette = 1;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 2:
|
||
|
|
case 34:
|
||
|
|
qtrle_decode_2n4bpp(s, row_ptr, height, 2);
|
||
|
|
has_palette = 1;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 4:
|
||
|
|
case 36:
|
||
|
|
qtrle_decode_2n4bpp(s, row_ptr, height, 4);
|
||
|
|
has_palette = 1;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 8:
|
||
|
|
case 40:
|
||
|
|
qtrle_decode_8bpp(s, row_ptr, height);
|
||
|
|
has_palette = 1;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 16:
|
||
|
|
qtrle_decode_16bpp(s, row_ptr, height);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 24:
|
||
|
|
qtrle_decode_24bpp(s, row_ptr, height);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 32:
|
||
|
|
qtrle_decode_32bpp(s, row_ptr, height);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
av_log (s->avctx, AV_LOG_ERROR, "Unsupported colorspace: %d bits/sample?\n",
|
||
|
|
avctx->bits_per_coded_sample);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(has_palette) {
|
||
|
|
int size;
|
||
|
|
const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, &size);
|
||
|
|
|
||
|
|
if (pal && size == AVPALETTE_SIZE) {
|
||
|
|
s->frame->palette_has_changed = 1;
|
||
|
|
memcpy(s->pal, pal, AVPALETTE_SIZE);
|
||
|
|
} else if (pal) {
|
||
|
|
av_log(avctx, AV_LOG_ERROR, "Palette size %d is wrong\n", size);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* make the palette available on the way out */
|
||
|
|
memcpy(s->frame->data[1], s->pal, AVPALETTE_SIZE);
|
||
|
|
}
|
||
|
|
|
||
|
|
done:
|
||
|
|
if (!s->frame->data[0])
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
if (duplicate) {
|
||
|
|
// ff_reget_buffer() isn't needed when frames don't change, so just update
|
||
|
|
// frame props.
|
||
|
|
ret = ff_decode_frame_props(avctx, s->frame);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((ret = av_frame_ref(data, s->frame)) < 0)
|
||
|
|
return ret;
|
||
|
|
*got_frame = 1;
|
||
|
|
|
||
|
|
/* always report that the buffer was completely consumed */
|
||
|
|
return avpkt->size;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void qtrle_decode_flush(AVCodecContext *avctx)
|
||
|
|
{
|
||
|
|
QtrleContext *s = avctx->priv_data;
|
||
|
|
|
||
|
|
av_frame_unref(s->frame);
|
||
|
|
}
|
||
|
|
|
||
|
|
static av_cold int qtrle_decode_end(AVCodecContext *avctx)
|
||
|
|
{
|
||
|
|
QtrleContext *s = avctx->priv_data;
|
||
|
|
|
||
|
|
av_frame_free(&s->frame);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
AVCodec ff_qtrle_decoder = {
|
||
|
|
.name = "qtrle",
|
||
|
|
.long_name = NULL_IF_CONFIG_SMALL("QuickTime Animation (RLE) video"),
|
||
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
||
|
|
.id = AV_CODEC_ID_QTRLE,
|
||
|
|
.priv_data_size = sizeof(QtrleContext),
|
||
|
|
.init = qtrle_decode_init,
|
||
|
|
.close = qtrle_decode_end,
|
||
|
|
.decode = qtrle_decode_frame,
|
||
|
|
.flush = qtrle_decode_flush,
|
||
|
|
.capabilities = AV_CODEC_CAP_DR1,
|
||
|
|
};
|