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Diffstat (limited to 'contrib/ffmpeg/libavcodec/flicvideo.c')
-rw-r--r--contrib/ffmpeg/libavcodec/flicvideo.c754
1 files changed, 0 insertions, 754 deletions
diff --git a/contrib/ffmpeg/libavcodec/flicvideo.c b/contrib/ffmpeg/libavcodec/flicvideo.c
deleted file mode 100644
index b60e0b1c2..000000000
--- a/contrib/ffmpeg/libavcodec/flicvideo.c
+++ /dev/null
@@ -1,754 +0,0 @@
-/*
- * FLI/FLC Animation Video Decoder
- * Copyright (C) 2003, 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 flic.c
- * Autodesk Animator FLI/FLC Video Decoder
- * by Mike Melanson (melanson@pcisys.net)
- * for more information on the .fli/.flc file format and all of its many
- * variations, visit:
- * http://www.compuphase.com/flic.htm
- *
- * This decoder outputs PAL8/RGB555/RGB565 and maybe one day RGB24
- * colorspace data, depending on the FLC. To use this decoder, be
- * sure that your demuxer sends the FLI file header to the decoder via
- * the extradata chunk in AVCodecContext. The chunk should be 128 bytes
- * large. The only exception is for FLI files from the game "Magic Carpet",
- * in which the header is only 12 bytes.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "common.h"
-#include "avcodec.h"
-#include "bswap.h"
-
-#define FLI_256_COLOR 4
-#define FLI_DELTA 7
-#define FLI_COLOR 11
-#define FLI_LC 12
-#define FLI_BLACK 13
-#define FLI_BRUN 15
-#define FLI_COPY 16
-#define FLI_MINI 18
-#define FLI_DTA_BRUN 25
-#define FLI_DTA_COPY 26
-#define FLI_DTA_LC 27
-
-#define FLI_TYPE_CODE (0xAF11)
-#define FLC_FLX_TYPE_CODE (0xAF12)
-#define FLC_DTA_TYPE_CODE (0xAF44) /* Marks an "Extended FLC" comes from Dave's Targa Animator (DTA) */
-#define FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE (0xAF13)
-
-#define CHECK_PIXEL_PTR(n) \
- if (pixel_ptr + n > pixel_limit) { \
- av_log (s->avctx, AV_LOG_INFO, "Problem: pixel_ptr >= pixel_limit (%d >= %d)\n", \
- pixel_ptr + n, pixel_limit); \
- return -1; \
- } \
-
-typedef struct FlicDecodeContext {
- AVCodecContext *avctx;
- AVFrame frame;
-
- unsigned int palette[256];
- int new_palette;
- int fli_type; /* either 0xAF11 or 0xAF12, affects palette resolution */
-} FlicDecodeContext;
-
-static int flic_decode_init(AVCodecContext *avctx)
-{
- FlicDecodeContext *s = (FlicDecodeContext *)avctx->priv_data;
- unsigned char *fli_header = (unsigned char *)avctx->extradata;
- int depth;
-
- s->avctx = avctx;
- avctx->has_b_frames = 0;
-
- s->fli_type = AV_RL16(&fli_header[4]); /* Might be overridden if a Magic Carpet FLC */
- depth = AV_RL16(&fli_header[12]);
-
- if (depth == 0) {
- depth = 8; /* Some FLC generators set depth to zero, when they mean 8Bpp. Fix up here */
- }
-
- if (s->avctx->extradata_size == 12) {
- /* special case for magic carpet FLIs */
- s->fli_type = FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE;
- } else if (s->avctx->extradata_size != 128) {
- av_log(avctx, AV_LOG_ERROR, "Expected extradata of 12 or 128 bytes\n");
- return -1;
- }
-
- if ((s->fli_type == FLC_FLX_TYPE_CODE) && (depth == 16)) {
- depth = 15; /* Original Autodesk FLX's say the depth is 16Bpp when it is really 15Bpp */
- }
-
- switch (depth) {
- case 8 : avctx->pix_fmt = PIX_FMT_PAL8; break;
- case 15 : avctx->pix_fmt = PIX_FMT_RGB555; break;
- case 16 : avctx->pix_fmt = PIX_FMT_RGB565; break;
- case 24 : avctx->pix_fmt = PIX_FMT_BGR24; /* Supposedly BGR, but havent any files to test with */
- av_log(avctx, AV_LOG_ERROR, "24Bpp FLC/FLX is unsupported due to no test files.\n");
- return -1;
- break;
- default :
- av_log(avctx, AV_LOG_ERROR, "Unknown FLC/FLX depth of %d Bpp is unsupported.\n",depth);
- return -1;
- }
-
- s->frame.data[0] = NULL;
- s->new_palette = 0;
-
- return 0;
-}
-
-static int flic_decode_frame_8BPP(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- FlicDecodeContext *s = (FlicDecodeContext *)avctx->priv_data;
-
- int stream_ptr = 0;
- int stream_ptr_after_color_chunk;
- int pixel_ptr;
- int palette_ptr;
- unsigned char palette_idx1;
- unsigned char palette_idx2;
-
- unsigned int frame_size;
- int num_chunks;
-
- unsigned int chunk_size;
- int chunk_type;
-
- int i, j;
-
- int color_packets;
- int color_changes;
- int color_shift;
- unsigned char r, g, b;
-
- int lines;
- int compressed_lines;
- int starting_line;
- signed short line_packets;
- int y_ptr;
- int byte_run;
- int pixel_skip;
- int pixel_countdown;
- unsigned char *pixels;
- int pixel_limit;
-
- 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) < 0) {
- av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
- return -1;
- }
-
- pixels = s->frame.data[0];
- pixel_limit = s->avctx->height * s->frame.linesize[0];
-
- frame_size = AV_RL32(&buf[stream_ptr]);
- stream_ptr += 6; /* skip the magic number */
- num_chunks = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 10; /* skip padding */
-
- frame_size -= 16;
-
- /* iterate through the chunks */
- while ((frame_size > 0) && (num_chunks > 0)) {
- chunk_size = AV_RL32(&buf[stream_ptr]);
- stream_ptr += 4;
- chunk_type = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
-
- switch (chunk_type) {
- case FLI_256_COLOR:
- case FLI_COLOR:
- stream_ptr_after_color_chunk = stream_ptr + chunk_size - 6;
-
- /* check special case: If this file is from the Magic Carpet
- * game and uses 6-bit colors even though it reports 256-color
- * chunks in a 0xAF12-type file (fli_type is set to 0xAF13 during
- * initialization) */
- if ((chunk_type == FLI_256_COLOR) && (s->fli_type != FLC_MAGIC_CARPET_SYNTHETIC_TYPE_CODE))
- color_shift = 0;
- else
- color_shift = 2;
- /* set up the palette */
- color_packets = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- palette_ptr = 0;
- for (i = 0; i < color_packets; i++) {
- /* first byte is how many colors to skip */
- palette_ptr += buf[stream_ptr++];
-
- /* next byte indicates how many entries to change */
- color_changes = buf[stream_ptr++];
-
- /* if there are 0 color changes, there are actually 256 */
- if (color_changes == 0)
- color_changes = 256;
-
- for (j = 0; j < color_changes; j++) {
- unsigned int entry;
-
- /* wrap around, for good measure */
- if ((unsigned)palette_ptr >= 256)
- palette_ptr = 0;
-
- r = buf[stream_ptr++] << color_shift;
- g = buf[stream_ptr++] << color_shift;
- b = buf[stream_ptr++] << color_shift;
- entry = (r << 16) | (g << 8) | b;
- if (s->palette[palette_ptr] != entry)
- s->new_palette = 1;
- s->palette[palette_ptr++] = entry;
- }
- }
-
- /* color chunks sometimes have weird 16-bit alignment issues;
- * therefore, take the hardline approach and set the stream_ptr
- * to the value calculated w.r.t. the size specified by the color
- * chunk header */
- stream_ptr = stream_ptr_after_color_chunk;
-
- break;
-
- case FLI_DELTA:
- y_ptr = 0;
- compressed_lines = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- while (compressed_lines > 0) {
- line_packets = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- if ((line_packets & 0xC000) == 0xC000) {
- // line skip opcode
- line_packets = -line_packets;
- y_ptr += line_packets * s->frame.linesize[0];
- } else if ((line_packets & 0xC000) == 0x4000) {
- av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets);
- } else if ((line_packets & 0xC000) == 0x8000) {
- // "last byte" opcode
- pixels[y_ptr + s->frame.linesize[0] - 1] = line_packets & 0xff;
- } else {
- compressed_lines--;
- pixel_ptr = y_ptr;
- pixel_countdown = s->avctx->width;
- for (i = 0; i < line_packets; i++) {
- /* account for the skip bytes */
- pixel_skip = buf[stream_ptr++];
- pixel_ptr += pixel_skip;
- pixel_countdown -= pixel_skip;
- byte_run = (signed char)(buf[stream_ptr++]);
- if (byte_run < 0) {
- byte_run = -byte_run;
- palette_idx1 = buf[stream_ptr++];
- palette_idx2 = buf[stream_ptr++];
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
- pixels[pixel_ptr++] = palette_idx1;
- pixels[pixel_ptr++] = palette_idx2;
- }
- } else {
- CHECK_PIXEL_PTR(byte_run * 2);
- for (j = 0; j < byte_run * 2; j++, pixel_countdown--) {
- palette_idx1 = buf[stream_ptr++];
- pixels[pixel_ptr++] = palette_idx1;
- }
- }
- }
-
- y_ptr += s->frame.linesize[0];
- }
- }
- break;
-
- case FLI_LC:
- /* line compressed */
- starting_line = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- y_ptr = 0;
- y_ptr += starting_line * s->frame.linesize[0];
-
- compressed_lines = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- while (compressed_lines > 0) {
- pixel_ptr = y_ptr;
- pixel_countdown = s->avctx->width;
- line_packets = buf[stream_ptr++];
- if (line_packets > 0) {
- for (i = 0; i < line_packets; i++) {
- /* account for the skip bytes */
- pixel_skip = buf[stream_ptr++];
- pixel_ptr += pixel_skip;
- pixel_countdown -= pixel_skip;
- byte_run = (signed char)(buf[stream_ptr++]);
- if (byte_run > 0) {
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++, pixel_countdown--) {
- palette_idx1 = buf[stream_ptr++];
- pixels[pixel_ptr++] = palette_idx1;
- }
- } else if (byte_run < 0) {
- byte_run = -byte_run;
- palette_idx1 = buf[stream_ptr++];
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++, pixel_countdown--) {
- pixels[pixel_ptr++] = palette_idx1;
- }
- }
- }
- }
-
- y_ptr += s->frame.linesize[0];
- compressed_lines--;
- }
- break;
-
- case FLI_BLACK:
- /* set the whole frame to color 0 (which is usually black) */
- memset(pixels, 0,
- s->frame.linesize[0] * s->avctx->height);
- break;
-
- case FLI_BRUN:
- /* Byte run compression: This chunk type only occurs in the first
- * FLI frame and it will update the entire frame. */
- y_ptr = 0;
- for (lines = 0; lines < s->avctx->height; lines++) {
- pixel_ptr = y_ptr;
- /* disregard the line packets; instead, iterate through all
- * pixels on a row */
- stream_ptr++;
- pixel_countdown = s->avctx->width;
- while (pixel_countdown > 0) {
- byte_run = (signed char)(buf[stream_ptr++]);
- if (byte_run > 0) {
- palette_idx1 = buf[stream_ptr++];
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++) {
- pixels[pixel_ptr++] = palette_idx1;
- pixel_countdown--;
- if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
- pixel_countdown, lines);
- }
- } else { /* copy bytes if byte_run < 0 */
- byte_run = -byte_run;
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++) {
- palette_idx1 = buf[stream_ptr++];
- pixels[pixel_ptr++] = palette_idx1;
- pixel_countdown--;
- if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
- pixel_countdown, lines);
- }
- }
- }
-
- y_ptr += s->frame.linesize[0];
- }
- break;
-
- case FLI_COPY:
- /* copy the chunk (uncompressed frame) */
- if (chunk_size - 6 > s->avctx->width * s->avctx->height) {
- av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
- "bigger than image, skipping chunk\n", chunk_size - 6);
- stream_ptr += chunk_size - 6;
- } else {
- for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
- y_ptr += s->frame.linesize[0]) {
- memcpy(&pixels[y_ptr], &buf[stream_ptr],
- s->avctx->width);
- stream_ptr += s->avctx->width;
- }
- }
- break;
-
- case FLI_MINI:
- /* some sort of a thumbnail? disregard this chunk... */
- stream_ptr += chunk_size - 6;
- break;
-
- default:
- av_log(avctx, AV_LOG_ERROR, "Unrecognized chunk type: %d\n", chunk_type);
- break;
- }
-
- frame_size -= chunk_size;
- num_chunks--;
- }
-
- /* by the end of the chunk, the stream ptr should equal the frame
- * size (minus 1, possibly); if it doesn't, issue a warning */
- if ((stream_ptr != buf_size) && (stream_ptr != buf_size - 1))
- av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
- "and final chunk ptr = %d\n", buf_size, stream_ptr);
-
- /* make the palette available on the way out */
- memcpy(s->frame.data[1], s->palette, AVPALETTE_SIZE);
- if (s->new_palette) {
- s->frame.palette_has_changed = 1;
- s->new_palette = 0;
- }
-
- *data_size=sizeof(AVFrame);
- *(AVFrame*)data = s->frame;
-
- return buf_size;
-}
-
-static int flic_decode_frame_15_16BPP(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- /* Note, the only difference between the 15Bpp and 16Bpp */
- /* Format is the pixel format, the packets are processed the same. */
- FlicDecodeContext *s = (FlicDecodeContext *)avctx->priv_data;
-
- int stream_ptr = 0;
- int pixel_ptr;
- unsigned char palette_idx1;
-
- unsigned int frame_size;
- int num_chunks;
-
- unsigned int chunk_size;
- int chunk_type;
-
- int i, j;
-
- int lines;
- int compressed_lines;
- signed short line_packets;
- int y_ptr;
- int byte_run;
- int pixel_skip;
- int pixel_countdown;
- unsigned char *pixels;
- int pixel;
- int pixel_limit;
-
- 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) < 0) {
- av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
- return -1;
- }
-
- pixels = s->frame.data[0];
- pixel_limit = s->avctx->height * s->frame.linesize[0];
-
- frame_size = AV_RL32(&buf[stream_ptr]);
- stream_ptr += 6; /* skip the magic number */
- num_chunks = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 10; /* skip padding */
-
- frame_size -= 16;
-
- /* iterate through the chunks */
- while ((frame_size > 0) && (num_chunks > 0)) {
- chunk_size = AV_RL32(&buf[stream_ptr]);
- stream_ptr += 4;
- chunk_type = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
-
- switch (chunk_type) {
- case FLI_256_COLOR:
- case FLI_COLOR:
- /* For some reason, it seems that non-paletised flics do include one of these */
- /* chunks in their first frame. Why i do not know, it seems rather extraneous */
-/* av_log(avctx, AV_LOG_ERROR, "Unexpected Palette chunk %d in non-paletised FLC\n",chunk_type);*/
- stream_ptr = stream_ptr + chunk_size - 6;
- break;
-
- case FLI_DELTA:
- case FLI_DTA_LC:
- y_ptr = 0;
- compressed_lines = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- while (compressed_lines > 0) {
- line_packets = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- if (line_packets < 0) {
- line_packets = -line_packets;
- y_ptr += line_packets * s->frame.linesize[0];
- } else {
- compressed_lines--;
- pixel_ptr = y_ptr;
- pixel_countdown = s->avctx->width;
- for (i = 0; i < line_packets; i++) {
- /* account for the skip bytes */
- pixel_skip = buf[stream_ptr++];
- pixel_ptr += (pixel_skip*2); /* Pixel is 2 bytes wide */
- pixel_countdown -= pixel_skip;
- byte_run = (signed char)(buf[stream_ptr++]);
- if (byte_run < 0) {
- byte_run = -byte_run;
- pixel = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++, pixel_countdown -= 2) {
- *((signed short*)(&pixels[pixel_ptr])) = pixel;
- pixel_ptr += 2;
- }
- } else {
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++, pixel_countdown--) {
- *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- pixel_ptr += 2;
- }
- }
- }
-
- y_ptr += s->frame.linesize[0];
- }
- }
- break;
-
- case FLI_LC:
- av_log(avctx, AV_LOG_ERROR, "Unexpected FLI_LC chunk in non-paletised FLC\n");
- stream_ptr = stream_ptr + chunk_size - 6;
- break;
-
- case FLI_BLACK:
- /* set the whole frame to 0x0000 which is black in both 15Bpp and 16Bpp modes. */
- memset(pixels, 0x0000,
- s->frame.linesize[0] * s->avctx->height);
- break;
-
- case FLI_BRUN:
- y_ptr = 0;
- for (lines = 0; lines < s->avctx->height; lines++) {
- pixel_ptr = y_ptr;
- /* disregard the line packets; instead, iterate through all
- * pixels on a row */
- stream_ptr++;
- pixel_countdown = (s->avctx->width * 2);
-
- while (pixel_countdown > 0) {
- byte_run = (signed char)(buf[stream_ptr++]);
- if (byte_run > 0) {
- palette_idx1 = buf[stream_ptr++];
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++) {
- pixels[pixel_ptr++] = palette_idx1;
- pixel_countdown--;
- if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) (linea%d)\n",
- pixel_countdown, lines);
- }
- } else { /* copy bytes if byte_run < 0 */
- byte_run = -byte_run;
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++) {
- palette_idx1 = buf[stream_ptr++];
- pixels[pixel_ptr++] = palette_idx1;
- pixel_countdown--;
- if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d) at line %d\n",
- pixel_countdown, lines);
- }
- }
- }
-
- /* Now FLX is strange, in that it is "byte" as opposed to "pixel" run length compressed.
- * This doesnt give us any good oportunity to perform word endian conversion
- * during decompression. So if its requried (ie, this isnt a LE target, we do
- * a second pass over the line here, swapping the bytes.
- */
- pixel = 0xFF00;
- if (0xFF00 != AV_RL16(&pixel)) /* Check if its not an LE Target */
- {
- pixel_ptr = y_ptr;
- pixel_countdown = s->avctx->width;
- while (pixel_countdown > 0) {
- *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[pixel_ptr]);
- pixel_ptr += 2;
- }
- }
- y_ptr += s->frame.linesize[0];
- }
- break;
-
- case FLI_DTA_BRUN:
- y_ptr = 0;
- for (lines = 0; lines < s->avctx->height; lines++) {
- pixel_ptr = y_ptr;
- /* disregard the line packets; instead, iterate through all
- * pixels on a row */
- stream_ptr++;
- pixel_countdown = s->avctx->width; /* Width is in pixels, not bytes */
-
- while (pixel_countdown > 0) {
- byte_run = (signed char)(buf[stream_ptr++]);
- if (byte_run > 0) {
- pixel = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++) {
- *((signed short*)(&pixels[pixel_ptr])) = pixel;
- pixel_ptr += 2;
- pixel_countdown--;
- if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
- pixel_countdown);
- }
- } else { /* copy pixels if byte_run < 0 */
- byte_run = -byte_run;
- CHECK_PIXEL_PTR(byte_run);
- for (j = 0; j < byte_run; j++) {
- *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[stream_ptr]);
- stream_ptr += 2;
- pixel_ptr += 2;
- pixel_countdown--;
- if (pixel_countdown < 0)
- av_log(avctx, AV_LOG_ERROR, "pixel_countdown < 0 (%d)\n",
- pixel_countdown);
- }
- }
- }
-
- y_ptr += s->frame.linesize[0];
- }
- break;
-
- case FLI_COPY:
- case FLI_DTA_COPY:
- /* copy the chunk (uncompressed frame) */
- if (chunk_size - 6 > (unsigned int)(s->avctx->width * s->avctx->height)*2) {
- av_log(avctx, AV_LOG_ERROR, "In chunk FLI_COPY : source data (%d bytes) " \
- "bigger than image, skipping chunk\n", chunk_size - 6);
- stream_ptr += chunk_size - 6;
- } else {
-
- for (y_ptr = 0; y_ptr < s->frame.linesize[0] * s->avctx->height;
- y_ptr += s->frame.linesize[0]) {
-
- pixel_countdown = s->avctx->width;
- pixel_ptr = 0;
- while (pixel_countdown > 0) {
- *((signed short*)(&pixels[y_ptr + pixel_ptr])) = AV_RL16(&buf[stream_ptr+pixel_ptr]);
- pixel_ptr += 2;
- pixel_countdown--;
- }
- stream_ptr += s->avctx->width*2;
- }
- }
- break;
-
- case FLI_MINI:
- /* some sort of a thumbnail? disregard this chunk... */
- stream_ptr += chunk_size - 6;
- break;
-
- default:
- av_log(avctx, AV_LOG_ERROR, "Unrecognized chunk type: %d\n", chunk_type);
- break;
- }
-
- frame_size -= chunk_size;
- num_chunks--;
- }
-
- /* by the end of the chunk, the stream ptr should equal the frame
- * size (minus 1, possibly); if it doesn't, issue a warning */
- if ((stream_ptr != buf_size) && (stream_ptr != buf_size - 1))
- av_log(avctx, AV_LOG_ERROR, "Processed FLI chunk where chunk size = %d " \
- "and final chunk ptr = %d\n", buf_size, stream_ptr);
-
-
- *data_size=sizeof(AVFrame);
- *(AVFrame*)data = s->frame;
-
- return buf_size;
-}
-
-static int flic_decode_frame_24BPP(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- av_log(avctx, AV_LOG_ERROR, "24Bpp FLC Unsupported due to lack of test files.\n");
- return -1;
-}
-
-static int flic_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- if (avctx->pix_fmt == PIX_FMT_PAL8) {
- return flic_decode_frame_8BPP(avctx, data, data_size,
- buf, buf_size);
- }
- else if ((avctx->pix_fmt == PIX_FMT_RGB555) ||
- (avctx->pix_fmt == PIX_FMT_RGB565)) {
- return flic_decode_frame_15_16BPP(avctx, data, data_size,
- buf, buf_size);
- }
- else if (avctx->pix_fmt == PIX_FMT_BGR24) {
- return flic_decode_frame_24BPP(avctx, data, data_size,
- buf, buf_size);
- }
-
- /* Shouldnt get here, ever as the pix_fmt is processed */
- /* in flic_decode_init and the above if should deal with */
- /* the finite set of possibilites allowable by here. */
- /* but in case we do, just error out. */
- av_log(avctx, AV_LOG_ERROR, "Unknown Format of FLC. My Science cant explain how this happened\n");
- return -1;
-}
-
-
-static int flic_decode_end(AVCodecContext *avctx)
-{
- FlicDecodeContext *s = avctx->priv_data;
-
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
-
- return 0;
-}
-
-AVCodec flic_decoder = {
- "flic",
- CODEC_TYPE_VIDEO,
- CODEC_ID_FLIC,
- sizeof(FlicDecodeContext),
- flic_decode_init,
- NULL,
- flic_decode_end,
- flic_decode_frame,
- CODEC_CAP_DR1,
- NULL,
- NULL,
- NULL,
- NULL
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 09:10:02 +0000