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Diffstat (limited to 'src/libffmpeg/libavcodec/qtrle.c')
-rw-r--r--src/libffmpeg/libavcodec/qtrle.c630
1 files changed, 0 insertions, 630 deletions
diff --git a/src/libffmpeg/libavcodec/qtrle.c b/src/libffmpeg/libavcodec/qtrle.c
deleted file mode 100644
index 0ccca28c6..000000000
--- a/src/libffmpeg/libavcodec/qtrle.c
+++ /dev/null
@@ -1,630 +0,0 @@
-/*
- * Quicktime Animation (RLE) Video Decoder
- * Copyright (C) 2004 the ffmpeg project
- *
- * 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 qtrle.c
- * QT RLE Video Decoder by Mike Melanson (melanson@pcisys.net)
- * For more information about the QT RLE format, visit:
- * http://www.pcisys.net/~melanson/codecs/
- *
- * The QT RLE decoder has seven modes of operation:
- * 1, 2, 4, 8, 16, 24, and 32 bits per pixel. For modes 1, 2, 4, and 8
- * the decoder outputs PAL8 colorspace data. 16-bit data yields RGB555
- * data. 24-bit data is RGB24 and 32-bit data is RGBA32.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "common.h"
-#include "avcodec.h"
-#include "dsputil.h"
-
-typedef struct QtrleContext {
-
- AVCodecContext *avctx;
- DSPContext dsp;
- AVFrame frame;
-
- unsigned char *buf;
- int size;
-
-} QtrleContext;
-
-#define CHECK_STREAM_PTR(n) \
- if ((stream_ptr + n) > s->size) { \
- av_log (s->avctx, AV_LOG_INFO, "Problem: stream_ptr out of bounds (%d >= %d)\n", \
- stream_ptr + n, s->size); \
- return; \
- }
-
-#define CHECK_PIXEL_PTR(n) \
- if ((pixel_ptr + n > pixel_limit) || (pixel_ptr + n < 0)) { \
- av_log (s->avctx, AV_LOG_INFO, "Problem: pixel_ptr = %d, pixel_limit = %d\n", \
- pixel_ptr + n, pixel_limit); \
- return; \
- } \
-
-static void qtrle_decode_1bpp(QtrleContext *s)
-{
-}
-
-static void qtrle_decode_2bpp(QtrleContext *s)
-{
-}
-
-static void qtrle_decode_4bpp(QtrleContext *s)
-{
- int stream_ptr;
- int header;
- int start_line;
- int lines_to_change;
- int rle_code;
- int row_ptr, pixel_ptr;
- int row_inc = s->frame.linesize[0];
- unsigned char pi1, pi2, pi3, pi4, pi5, pi6, pi7, pi8; /* 8 palette indices */
- unsigned char *rgb = s->frame.data[0];
- int pixel_limit = s->frame.linesize[0] * s->avctx->height;
-
- /* check if this frame is even supposed to change */
- if (s->size < 8)
- return;
-
- /* start after the chunk size */
- stream_ptr = 4;
-
- /* fetch the header */
- CHECK_STREAM_PTR(2);
- header = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 2;
-
- /* if a header is present, fetch additional decoding parameters */
- if (header & 0x0008) {
- CHECK_STREAM_PTR(8);
- start_line = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- lines_to_change = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- } else {
- start_line = 0;
- lines_to_change = s->avctx->height;
- }
-
- row_ptr = row_inc * start_line;
- while (lines_to_change--) {
- CHECK_STREAM_PTR(2);
- pixel_ptr = row_ptr + (8 * (s->buf[stream_ptr++] - 1));
-
- while ((rle_code = (signed char)s->buf[stream_ptr++]) != -1) {
- if (rle_code == 0) {
- /* there's another skip code in the stream */
- CHECK_STREAM_PTR(1);
- pixel_ptr += (8 * (s->buf[stream_ptr++] - 1));
- CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
- } else if (rle_code < 0) {
- /* decode the run length code */
- rle_code = -rle_code;
- /* get the next 4 bytes from the stream, treat them as palette
- * indices, and output them rle_code times */
- CHECK_STREAM_PTR(4);
- pi1 = ((s->buf[stream_ptr]) >> 4) & 0x0f;
- pi2 = (s->buf[stream_ptr++]) & 0x0f;
- pi3 = ((s->buf[stream_ptr]) >> 4) & 0x0f;
- pi4 = (s->buf[stream_ptr++]) & 0x0f;
- pi5 = ((s->buf[stream_ptr]) >> 4) & 0x0f;
- pi6 = (s->buf[stream_ptr++]) & 0x0f;
- pi7 = ((s->buf[stream_ptr]) >> 4) & 0x0f;
- pi8 = (s->buf[stream_ptr++]) & 0x0f;
-
- CHECK_PIXEL_PTR(rle_code * 8);
-
- while (rle_code--) {
- rgb[pixel_ptr++] = pi1;
- rgb[pixel_ptr++] = pi2;
- rgb[pixel_ptr++] = pi3;
- rgb[pixel_ptr++] = pi4;
- rgb[pixel_ptr++] = pi5;
- rgb[pixel_ptr++] = pi6;
- rgb[pixel_ptr++] = pi7;
- rgb[pixel_ptr++] = pi8;
- }
- } else {
- /* copy the same pixel directly to output 4 times */
- rle_code *= 4;
- CHECK_STREAM_PTR(rle_code);
- CHECK_PIXEL_PTR(rle_code*2);
-
- while (rle_code--) {
- rgb[pixel_ptr++] = ((s->buf[stream_ptr]) >> 4) & 0x0f;
- rgb[pixel_ptr++] = (s->buf[stream_ptr++]) & 0x0f;
- }
- }
- }
- row_ptr += row_inc;
- }
-}
-
-static void qtrle_decode_8bpp(QtrleContext *s)
-{
- int stream_ptr;
- int header;
- int start_line;
- int lines_to_change;
- int rle_code;
- int row_ptr, pixel_ptr;
- int row_inc = s->frame.linesize[0];
- unsigned char pi1, pi2, pi3, pi4; /* 4 palette indices */
- unsigned char *rgb = s->frame.data[0];
- int pixel_limit = s->frame.linesize[0] * s->avctx->height;
-
- /* check if this frame is even supposed to change */
- if (s->size < 8)
- return;
-
- /* start after the chunk size */
- stream_ptr = 4;
-
- /* fetch the header */
- CHECK_STREAM_PTR(2);
- header = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 2;
-
- /* if a header is present, fetch additional decoding parameters */
- if (header & 0x0008) {
- CHECK_STREAM_PTR(8);
- start_line = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- lines_to_change = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- } else {
- start_line = 0;
- lines_to_change = s->avctx->height;
- }
-
- row_ptr = row_inc * start_line;
- while (lines_to_change--) {
- CHECK_STREAM_PTR(2);
- pixel_ptr = row_ptr + (4 * (s->buf[stream_ptr++] - 1));
-
- while ((rle_code = (signed char)s->buf[stream_ptr++]) != -1) {
- if (rle_code == 0) {
- /* there's another skip code in the stream */
- CHECK_STREAM_PTR(1);
- pixel_ptr += (4 * (s->buf[stream_ptr++] - 1));
- CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
- } else if (rle_code < 0) {
- /* decode the run length code */
- rle_code = -rle_code;
- /* get the next 4 bytes from the stream, treat them as palette
- * indices, and output them rle_code times */
- CHECK_STREAM_PTR(4);
- pi1 = s->buf[stream_ptr++];
- pi2 = s->buf[stream_ptr++];
- pi3 = s->buf[stream_ptr++];
- pi4 = s->buf[stream_ptr++];
-
- CHECK_PIXEL_PTR(rle_code * 4);
-
- while (rle_code--) {
- rgb[pixel_ptr++] = pi1;
- rgb[pixel_ptr++] = pi2;
- rgb[pixel_ptr++] = pi3;
- rgb[pixel_ptr++] = pi4;
- }
- } else {
- /* copy the same pixel directly to output 4 times */
- rle_code *= 4;
- CHECK_STREAM_PTR(rle_code);
- CHECK_PIXEL_PTR(rle_code);
-
- while (rle_code--) {
- rgb[pixel_ptr++] = s->buf[stream_ptr++];
- }
- }
- }
- row_ptr += row_inc;
- }
-}
-
-static void qtrle_decode_16bpp(QtrleContext *s)
-{
- int stream_ptr;
- int header;
- int start_line;
- int lines_to_change;
- int rle_code;
- int row_ptr, pixel_ptr;
- int row_inc = s->frame.linesize[0];
- unsigned short rgb16;
- unsigned char *rgb = s->frame.data[0];
- int pixel_limit = s->frame.linesize[0] * s->avctx->height;
-
- /* check if this frame is even supposed to change */
- if (s->size < 8)
- return;
-
- /* start after the chunk size */
- stream_ptr = 4;
-
- /* fetch the header */
- CHECK_STREAM_PTR(2);
- header = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 2;
-
- /* if a header is present, fetch additional decoding parameters */
- if (header & 0x0008) {
- CHECK_STREAM_PTR(8);
- start_line = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- lines_to_change = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- } else {
- start_line = 0;
- lines_to_change = s->avctx->height;
- }
-
- row_ptr = row_inc * start_line;
- while (lines_to_change--) {
- CHECK_STREAM_PTR(2);
- pixel_ptr = row_ptr + (s->buf[stream_ptr++] - 1) * 2;
-
- while ((rle_code = (signed char)s->buf[stream_ptr++]) != -1) {
- if (rle_code == 0) {
- /* there's another skip code in the stream */
- CHECK_STREAM_PTR(1);
- pixel_ptr += (s->buf[stream_ptr++] - 1) * 2;
- CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
- } else if (rle_code < 0) {
- /* decode the run length code */
- rle_code = -rle_code;
- CHECK_STREAM_PTR(2);
- rgb16 = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 2;
-
- CHECK_PIXEL_PTR(rle_code * 2);
-
- while (rle_code--) {
- *(unsigned short *)(&rgb[pixel_ptr]) = rgb16;
- pixel_ptr += 2;
- }
- } else {
- CHECK_STREAM_PTR(rle_code * 2);
- CHECK_PIXEL_PTR(rle_code * 2);
-
- /* copy pixels directly to output */
- while (rle_code--) {
- rgb16 = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 2;
- *(unsigned short *)(&rgb[pixel_ptr]) = rgb16;
- pixel_ptr += 2;
- }
- }
- }
- row_ptr += row_inc;
- }
-}
-
-static void qtrle_decode_24bpp(QtrleContext *s)
-{
- int stream_ptr;
- int header;
- int start_line;
- int lines_to_change;
- int rle_code;
- int row_ptr, pixel_ptr;
- int row_inc = s->frame.linesize[0];
- unsigned char r, g, b;
- unsigned char *rgb = s->frame.data[0];
- int pixel_limit = s->frame.linesize[0] * s->avctx->height;
-
- /* check if this frame is even supposed to change */
- if (s->size < 8)
- return;
-
- /* start after the chunk size */
- stream_ptr = 4;
-
- /* fetch the header */
- CHECK_STREAM_PTR(2);
- header = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 2;
-
- /* if a header is present, fetch additional decoding parameters */
- if (header & 0x0008) {
- CHECK_STREAM_PTR(8);
- start_line = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- lines_to_change = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- } else {
- start_line = 0;
- lines_to_change = s->avctx->height;
- }
-
- row_ptr = row_inc * start_line;
- while (lines_to_change--) {
- CHECK_STREAM_PTR(2);
- pixel_ptr = row_ptr + (s->buf[stream_ptr++] - 1) * 3;
-
- while ((rle_code = (signed char)s->buf[stream_ptr++]) != -1) {
- if (rle_code == 0) {
- /* there's another skip code in the stream */
- CHECK_STREAM_PTR(1);
- pixel_ptr += (s->buf[stream_ptr++] - 1) * 3;
- CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */
- } else if (rle_code < 0) {
- /* decode the run length code */
- rle_code = -rle_code;
- CHECK_STREAM_PTR(3);
- r = s->buf[stream_ptr++];
- g = s->buf[stream_ptr++];
- b = s->buf[stream_ptr++];
-
- CHECK_PIXEL_PTR(rle_code * 3);
-
- while (rle_code--) {
- rgb[pixel_ptr++] = r;
- rgb[pixel_ptr++] = g;
- rgb[pixel_ptr++] = b;
- }
- } else {
- CHECK_STREAM_PTR(rle_code * 3);
- CHECK_PIXEL_PTR(rle_code * 3);
-
- /* copy pixels directly to output */
- while (rle_code--) {
- rgb[pixel_ptr++] = s->buf[stream_ptr++];
- rgb[pixel_ptr++] = s->buf[stream_ptr++];
- rgb[pixel_ptr++] = s->buf[stream_ptr++];
- }
- }
- }
- row_ptr += row_inc;
- }
-}
-
-static void qtrle_decode_32bpp(QtrleContext *s)
-{
- int stream_ptr;
- int header;
- int start_line;
- int lines_to_change;
- int rle_code;
- int row_ptr, pixel_ptr;
- int row_inc = s->frame.linesize[0];
- unsigned char a, r, g, b;
- unsigned int argb;
- unsigned char *rgb = s->frame.data[0];
- int pixel_limit = s->frame.linesize[0] * s->avctx->height;
-
- /* check if this frame is even supposed to change */
- if (s->size < 8)
- return;
-
- /* start after the chunk size */
- stream_ptr = 4;
-
- /* fetch the header */
- CHECK_STREAM_PTR(2);
- header = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 2;
-
- /* if a header is present, fetch additional decoding parameters */
- if (header & 0x0008) {
- CHECK_STREAM_PTR(8);
- start_line = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- lines_to_change = AV_RB16(&s->buf[stream_ptr]);
- stream_ptr += 4;
- } else {
- start_line = 0;
- lines_to_change = s->avctx->height;
- }
-
- row_ptr = row_inc * start_line;
- while (lines_to_change--) {
- CHECK_STREAM_PTR(2);
- pixel_ptr = row_ptr + (s->buf[stream_ptr++] - 1) * 4;
-
- while ((rle_code = (signed char)s->buf[stream_ptr++]) != -1) {
- if (rle_code == 0) {
- /* there's another skip code in the stream */
- CHECK_STREAM_PTR(1);
- pixel_ptr += (s->buf[stream_ptr++] - 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;
- CHECK_STREAM_PTR(4);
- a = s->buf[stream_ptr++];
- r = s->buf[stream_ptr++];
- g = s->buf[stream_ptr++];
- b = s->buf[stream_ptr++];
- argb = (a << 24) | (r << 16) | (g << 8) | (b << 0);
-
- CHECK_PIXEL_PTR(rle_code * 4);
-
- while (rle_code--) {
- *(unsigned int *)(&rgb[pixel_ptr]) = argb;
- pixel_ptr += 4;
- }
- } else {
- CHECK_STREAM_PTR(rle_code * 4);
- CHECK_PIXEL_PTR(rle_code * 4);
-
- /* copy pixels directly to output */
- while (rle_code--) {
- a = s->buf[stream_ptr++];
- r = s->buf[stream_ptr++];
- g = s->buf[stream_ptr++];
- b = s->buf[stream_ptr++];
- argb = (a << 24) | (r << 16) | (g << 8) | (b << 0);
- *(unsigned int *)(&rgb[pixel_ptr]) = argb;
- pixel_ptr += 4;
- }
- }
- }
- row_ptr += row_inc;
- }
-}
-
-static int qtrle_decode_init(AVCodecContext *avctx)
-{
- QtrleContext *s = (QtrleContext *)avctx->priv_data;
-
- s->avctx = avctx;
- switch (avctx->bits_per_sample) {
- case 1:
- case 2:
- case 4:
- case 8:
- case 33:
- case 34:
- case 36:
- case 40:
- avctx->pix_fmt = PIX_FMT_PAL8;
- break;
-
- case 16:
- avctx->pix_fmt = PIX_FMT_RGB555;
- break;
-
- case 24:
- avctx->pix_fmt = PIX_FMT_RGB24;
- break;
-
- case 32:
- avctx->pix_fmt = PIX_FMT_RGBA32;
- break;
-
- default:
- av_log (avctx, AV_LOG_ERROR, "Unsupported colorspace: %d bits/sample?\n",
- avctx->bits_per_sample);
- break;
- }
- avctx->has_b_frames = 0;
- dsputil_init(&s->dsp, avctx);
-
- s->frame.data[0] = NULL;
-
- return 0;
-}
-
-static int qtrle_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- QtrleContext *s = (QtrleContext *)avctx->priv_data;
-
- s->buf = buf;
- s->size = buf_size;
-
- s->frame.reference = 1;
- s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE |
- FF_BUFFER_HINTS_REUSABLE | FF_BUFFER_HINTS_READABLE;
- if (avctx->reget_buffer(avctx, &s->frame)) {
- av_log (s->avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
- return -1;
- }
-
- switch (avctx->bits_per_sample) {
- case 1:
- case 33:
- qtrle_decode_1bpp(s);
- break;
-
- case 2:
- case 34:
- qtrle_decode_2bpp(s);
- break;
-
- case 4:
- case 36:
- qtrle_decode_4bpp(s);
- /* make the palette available on the way out */
- memcpy(s->frame.data[1], s->avctx->palctrl->palette, AVPALETTE_SIZE);
- if (s->avctx->palctrl->palette_changed) {
- s->frame.palette_has_changed = 1;
- s->avctx->palctrl->palette_changed = 0;
- }
- break;
-
- case 8:
- case 40:
- qtrle_decode_8bpp(s);
- /* make the palette available on the way out */
- memcpy(s->frame.data[1], s->avctx->palctrl->palette, AVPALETTE_SIZE);
- if (s->avctx->palctrl->palette_changed) {
- s->frame.palette_has_changed = 1;
- s->avctx->palctrl->palette_changed = 0;
- }
- break;
-
- case 16:
- qtrle_decode_16bpp(s);
- break;
-
- case 24:
- qtrle_decode_24bpp(s);
- break;
-
- case 32:
- qtrle_decode_32bpp(s);
- break;
-
- default:
- av_log (s->avctx, AV_LOG_ERROR, "Unsupported colorspace: %d bits/sample?\n",
- avctx->bits_per_sample);
- break;
- }
-
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = s->frame;
-
- /* always report that the buffer was completely consumed */
- return buf_size;
-}
-
-static int qtrle_decode_end(AVCodecContext *avctx)
-{
- QtrleContext *s = (QtrleContext *)avctx->priv_data;
-
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
-
- return 0;
-}
-
-AVCodec qtrle_decoder = {
- "qtrle",
- CODEC_TYPE_VIDEO,
- CODEC_ID_QTRLE,
- sizeof(QtrleContext),
- qtrle_decode_init,
- NULL,
- qtrle_decode_end,
- qtrle_decode_frame,
- CODEC_CAP_DR1,
-};
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 14:05:16 +0000