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Diffstat (limited to 'src/libffmpeg/libavcodec/rpza.c')
-rw-r--r--src/libffmpeg/libavcodec/rpza.c292
1 files changed, 0 insertions, 292 deletions
diff --git a/src/libffmpeg/libavcodec/rpza.c b/src/libffmpeg/libavcodec/rpza.c
deleted file mode 100644
index 8ab5dbb92..000000000
--- a/src/libffmpeg/libavcodec/rpza.c
+++ /dev/null
@@ -1,292 +0,0 @@
-/*
- * Quicktime Video (RPZA) Video Decoder
- * Copyright (C) 2003 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 rpza.c
- * QT RPZA Video Decoder by Roberto Togni <rtogni@bresciaonline.it>
- * For more information about the RPZA format, visit:
- * http://www.pcisys.net/~melanson/codecs/
- *
- * The RPZA decoder outputs RGB555 colorspace data.
- *
- * Note that this decoder reads big endian RGB555 pixel values from the
- * bytestream, arranges them in the host's endian order, and outputs
- * them to the final rendered map in the same host endian order. This is
- * intended behavior as the ffmpeg documentation states that RGB555 pixels
- * shall be stored in native CPU endianness.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "common.h"
-#include "avcodec.h"
-#include "dsputil.h"
-
-typedef struct RpzaContext {
-
- AVCodecContext *avctx;
- DSPContext dsp;
- AVFrame frame;
-
- unsigned char *buf;
- int size;
-
-} RpzaContext;
-
-#define ADVANCE_BLOCK() \
-{ \
- pixel_ptr += 4; \
- if (pixel_ptr >= width) \
- { \
- pixel_ptr = 0; \
- row_ptr += stride * 4; \
- } \
- total_blocks--; \
- if (total_blocks < 0) \
- { \
- av_log(s->avctx, AV_LOG_ERROR, "warning: block counter just went negative (this should not happen)\n"); \
- return; \
- } \
-}
-
-static void rpza_decode_stream(RpzaContext *s)
-{
- int width = s->avctx->width;
- int stride = s->frame.linesize[0] / 2;
- int row_inc = stride - 4;
- int stream_ptr = 0;
- int chunk_size;
- unsigned char opcode;
- int n_blocks;
- unsigned short colorA = 0, colorB;
- unsigned short color4[4];
- unsigned char index, idx;
- unsigned short ta, tb;
- unsigned short *pixels = (unsigned short *)s->frame.data[0];
-
- int row_ptr = 0;
- int pixel_ptr = 0;
- int block_ptr;
- int pixel_x, pixel_y;
- int total_blocks;
-
- /* First byte is always 0xe1. Warn if it's different */
- if (s->buf[stream_ptr] != 0xe1)
- av_log(s->avctx, AV_LOG_ERROR, "First chunk byte is 0x%02x instead of 0xe1\n",
- s->buf[stream_ptr]);
-
- /* Get chunk size, ingnoring first byte */
- chunk_size = AV_RB32(&s->buf[stream_ptr]) & 0x00FFFFFF;
- stream_ptr += 4;
-
- /* If length mismatch use size from MOV file and try to decode anyway */
- if (chunk_size != s->size)
- av_log(s->avctx, AV_LOG_ERROR, "MOV chunk size != encoded chunk size; using MOV chunk size\n");
-
- chunk_size = s->size;
-
- /* Number of 4x4 blocks in frame. */
- total_blocks = ((s->avctx->width + 3) / 4) * ((s->avctx->height + 3) / 4);
-
- /* Process chunk data */
- while (stream_ptr < chunk_size) {
- opcode = s->buf[stream_ptr++]; /* Get opcode */
-
- n_blocks = (opcode & 0x1f) + 1; /* Extract block counter from opcode */
-
- /* If opcode MSbit is 0, we need more data to decide what to do */
- if ((opcode & 0x80) == 0) {
- colorA = (opcode << 8) | (s->buf[stream_ptr++]);
- opcode = 0;
- if ((s->buf[stream_ptr] & 0x80) != 0) {
- /* Must behave as opcode 110xxxxx, using colorA computed
- * above. Use fake opcode 0x20 to enter switch block at
- * the right place */
- opcode = 0x20;
- n_blocks = 1;
- }
- }
-
- switch (opcode & 0xe0) {
-
- /* Skip blocks */
- case 0x80:
- while (n_blocks--) {
- ADVANCE_BLOCK();
- }
- break;
-
- /* Fill blocks with one color */
- case 0xa0:
- colorA = AV_RB16 (&s->buf[stream_ptr]);
- stream_ptr += 2;
- while (n_blocks--) {
- block_ptr = row_ptr + pixel_ptr;
- for (pixel_y = 0; pixel_y < 4; pixel_y++) {
- for (pixel_x = 0; pixel_x < 4; pixel_x++){
- pixels[block_ptr] = colorA;
- block_ptr++;
- }
- block_ptr += row_inc;
- }
- ADVANCE_BLOCK();
- }
- break;
-
- /* Fill blocks with 4 colors */
- case 0xc0:
- colorA = AV_RB16 (&s->buf[stream_ptr]);
- stream_ptr += 2;
- case 0x20:
- colorB = AV_RB16 (&s->buf[stream_ptr]);
- stream_ptr += 2;
-
- /* sort out the colors */
- color4[0] = colorB;
- color4[1] = 0;
- color4[2] = 0;
- color4[3] = colorA;
-
- /* red components */
- ta = (colorA >> 10) & 0x1F;
- tb = (colorB >> 10) & 0x1F;
- color4[1] |= ((11 * ta + 21 * tb) >> 5) << 10;
- color4[2] |= ((21 * ta + 11 * tb) >> 5) << 10;
-
- /* green components */
- ta = (colorA >> 5) & 0x1F;
- tb = (colorB >> 5) & 0x1F;
- color4[1] |= ((11 * ta + 21 * tb) >> 5) << 5;
- color4[2] |= ((21 * ta + 11 * tb) >> 5) << 5;
-
- /* blue components */
- ta = colorA & 0x1F;
- tb = colorB & 0x1F;
- color4[1] |= ((11 * ta + 21 * tb) >> 5);
- color4[2] |= ((21 * ta + 11 * tb) >> 5);
-
- while (n_blocks--) {
- block_ptr = row_ptr + pixel_ptr;
- for (pixel_y = 0; pixel_y < 4; pixel_y++) {
- index = s->buf[stream_ptr++];
- for (pixel_x = 0; pixel_x < 4; pixel_x++){
- idx = (index >> (2 * (3 - pixel_x))) & 0x03;
- pixels[block_ptr] = color4[idx];
- block_ptr++;
- }
- block_ptr += row_inc;
- }
- ADVANCE_BLOCK();
- }
- break;
-
- /* Fill block with 16 colors */
- case 0x00:
- block_ptr = row_ptr + pixel_ptr;
- for (pixel_y = 0; pixel_y < 4; pixel_y++) {
- for (pixel_x = 0; pixel_x < 4; pixel_x++){
- /* We already have color of upper left pixel */
- if ((pixel_y != 0) || (pixel_x !=0)) {
- colorA = AV_RB16 (&s->buf[stream_ptr]);
- stream_ptr += 2;
- }
- pixels[block_ptr] = colorA;
- block_ptr++;
- }
- block_ptr += row_inc;
- }
- ADVANCE_BLOCK();
- break;
-
- /* Unknown opcode */
- default:
- av_log(s->avctx, AV_LOG_ERROR, "Unknown opcode %d in rpza chunk."
- " Skip remaining %d bytes of chunk data.\n", opcode,
- chunk_size - stream_ptr);
- return;
- } /* Opcode switch */
- }
-}
-
-static int rpza_decode_init(AVCodecContext *avctx)
-{
- RpzaContext *s = (RpzaContext *)avctx->priv_data;
-
- s->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_RGB555;
- avctx->has_b_frames = 0;
- dsputil_init(&s->dsp, avctx);
-
- s->frame.data[0] = NULL;
-
- return 0;
-}
-
-static int rpza_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- RpzaContext *s = (RpzaContext *)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;
- if (avctx->reget_buffer(avctx, &s->frame)) {
- av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
- return -1;
- }
-
- rpza_decode_stream(s);
-
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = s->frame;
-
- /* always report that the buffer was completely consumed */
- return buf_size;
-}
-
-static int rpza_decode_end(AVCodecContext *avctx)
-{
- RpzaContext *s = (RpzaContext *)avctx->priv_data;
-
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
-
- return 0;
-}
-
-AVCodec rpza_decoder = {
- "rpza",
- CODEC_TYPE_VIDEO,
- CODEC_ID_RPZA,
- sizeof(RpzaContext),
- rpza_decode_init,
- NULL,
- rpza_decode_end,
- rpza_decode_frame,
- CODEC_CAP_DR1,
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 14:11:54 +0000