* Westwood Studios VQA Video Decoder
* Copyright (C) 2003 the ffmpeg project
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * Libav 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file vqavideo.c
- * VQA Video Decoder by Mike Melanson (melanson@pcisys.net)
- * For more information about the RPZA format, visit:
- * http://www.pcisys.net/~melanson/codecs/
+ * @file
+ * VQA Video Decoder
+ * @author Mike Melanson (melanson@pcisys.net)
+ * @see http://wiki.multimedia.cx/index.php?title=VQA
*
- * The VQA video decoder outputs PAL8 colorspace data.
+ * The VQA video decoder outputs PAL8 or RGB555 colorspace data, depending
+ * on the type of data in the file.
*
* This decoder needs the 42-byte VQHD header from the beginning
* of the VQA file passed through the extradata field. The VQHD header
*
* bytes 0-3 chunk fourcc: 'VQHD'
* bytes 4-7 chunk size in big-endian format, should be 0x0000002A
- * bytes 8-50 VQHD chunk data
+ * bytes 8-49 VQHD chunk data
*
- * Bytes 8-50 are what this decoder expects to see.
+ * Bytes 8-49 are what this decoder expects to see.
*
* Briefly, VQA is a vector quantized animation format that operates in a
- * 6-bit VGA palettized colorspace. It operates on pixel vectors (blocks)
+ * VGA palettized colorspace. It operates on pixel vectors (blocks)
* of either 4x2 or 4x4 in size. Compressed VQA chunks can contain vector
* codebooks, palette information, and code maps for rendering vectors onto
* frames. Any of these components can also be compressed with a run-length
* file. This is an interesting technique, although it makes random file
* seeking difficult despite the fact that the frames are all intracoded.
*
- * V1,2 VQA uses 12-bit codebook indices. If the 12-bit indices were
+ * V1,2 VQA uses 12-bit codebook indexes. If the 12-bit indexes were
* packed into bytes and then RLE compressed, bytewise, the results would
* be poor. That is why the coding method divides each index into 2 parts,
- * the top 4 bits and the bottom 8 bits, the RL encodes the 4-bit pieces
+ * the top 4 bits and the bottom 8 bits, then RL encodes the 4-bit pieces
* together and the 8-bit pieces together. If most of the vectors are
* clustered into one group of 256 vectors, most of the 4-bit index pieces
* should be the same.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
-#include "common.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/imgutils.h"
#include "avcodec.h"
-#include "dsputil.h"
#define PALETTE_COUNT 256
#define VQA_HEADER_SIZE 0x2A
#define CHUNK_PREAMBLE_SIZE 8
-/* v1, v2 files: each vector codebook entry is 4x2=8 pixels = 8 bytes */
-#define V1_2_VECTOR_SIZE 8
-#define V1_2_MAX_VECTORS 0xF00
-/* v3 files: each vector codebook entry is 4x4=16 pixels = 16 bytes */
-#define V3_VECTOR_SIZE 16
-#define V3_MAX_VECTORS 0xFF00
-
-#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
-#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
-#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
- (((uint8_t*)(x))[1] << 16) | \
- (((uint8_t*)(x))[2] << 8) | \
- ((uint8_t*)(x))[3])
-
-#define FOURCC_TAG( ch0, ch1, ch2, ch3 ) \
- ( (long)(unsigned char)(ch3) | \
- ( (long)(unsigned char)(ch2) << 8 ) | \
- ( (long)(unsigned char)(ch1) << 16 ) | \
- ( (long)(unsigned char)(ch0) << 24 ) )
-
-#define CBF0_TAG FOURCC_TAG('C', 'B', 'F', '0')
-#define CBFZ_TAG FOURCC_TAG('C', 'B', 'F', 'Z')
-#define CBP0_TAG FOURCC_TAG('C', 'B', 'P', '0')
-#define CBPZ_TAG FOURCC_TAG('C', 'B', 'P', 'Z')
-#define CPL0_TAG FOURCC_TAG('C', 'P', 'L', '0')
-#define CPLZ_TAG FOURCC_TAG('C', 'P', 'L', 'Z')
-#define VPTZ_TAG FOURCC_TAG('V', 'P', 'T', 'Z')
-
-#define VQA_DEBUG 0
-
-#if VQA_DEBUG
-#define vqa_debug printf
-#else
-static inline void vqa_debug(const char *format, ...) { }
-#endif
+/* allocate the maximum vector space, regardless of the file version:
+ * (0xFF00 codebook vectors + 0x100 solid pixel vectors) * (4x4 pixels/block) */
+#define MAX_CODEBOOK_VECTORS 0xFF00
+#define SOLID_PIXEL_VECTORS 0x100
+#define MAX_VECTORS (MAX_CODEBOOK_VECTORS + SOLID_PIXEL_VECTORS)
+#define MAX_CODEBOOK_SIZE (MAX_VECTORS * 4 * 4)
+
+#define CBF0_TAG MKBETAG('C', 'B', 'F', '0')
+#define CBFZ_TAG MKBETAG('C', 'B', 'F', 'Z')
+#define CBP0_TAG MKBETAG('C', 'B', 'P', '0')
+#define CBPZ_TAG MKBETAG('C', 'B', 'P', 'Z')
+#define CPL0_TAG MKBETAG('C', 'P', 'L', '0')
+#define CPLZ_TAG MKBETAG('C', 'P', 'L', 'Z')
+#define VPTZ_TAG MKBETAG('V', 'P', 'T', 'Z')
typedef struct VqaContext {
AVCodecContext *avctx;
- DSPContext dsp;
AVFrame frame;
- unsigned char *buf;
+ const unsigned char *buf;
int size;
- unsigned char palette[PALETTE_COUNT * 4];
+ uint32_t palette[PALETTE_COUNT];
int width; /* width of a frame */
int height; /* height of a frame */
int vqa_version; /* this should be either 1, 2 or 3 */
unsigned char *codebook; /* the current codebook */
+ int codebook_size;
unsigned char *next_codebook_buffer; /* accumulator for next codebook */
int next_codebook_buffer_index;
} VqaContext;
-static int vqa_decode_init(AVCodecContext *avctx)
+static av_cold int vqa_decode_init(AVCodecContext *avctx)
{
- VqaContext *s = (VqaContext *)avctx->priv_data;
+ VqaContext *s = avctx->priv_data;
unsigned char *vqa_header;
+ int i, j, codebook_index;
s->avctx = avctx;
avctx->pix_fmt = PIX_FMT_PAL8;
- avctx->has_b_frames = 0;
- dsputil_init(&s->dsp, avctx);
/* make sure the extradata made it */
if (s->avctx->extradata_size != VQA_HEADER_SIZE) {
- printf(" VQA video: expected extradata size of %d\n", VQA_HEADER_SIZE);
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: expected extradata size of %d\n", VQA_HEADER_SIZE);
return -1;
}
/* load up the VQA parameters from the header */
vqa_header = (unsigned char *)s->avctx->extradata;
s->vqa_version = vqa_header[0];
- s->width = LE_16(&vqa_header[6]);
- s->height = LE_16(&vqa_header[8]);
+ s->width = AV_RL16(&vqa_header[6]);
+ s->height = AV_RL16(&vqa_header[8]);
+ if(av_image_check_size(s->width, s->height, 0, avctx)){
+ s->width= s->height= 0;
+ return -1;
+ }
s->vector_width = vqa_header[10];
s->vector_height = vqa_header[11];
s->partial_count = s->partial_countdown = vqa_header[13];
}
/* allocate codebooks */
- if (s->vqa_version == 3) {
- s->codebook = av_malloc(V3_VECTOR_SIZE * V3_MAX_VECTORS);
- s->next_codebook_buffer = av_malloc(V3_VECTOR_SIZE * V3_MAX_VECTORS);
+ s->codebook_size = MAX_CODEBOOK_SIZE;
+ s->codebook = av_malloc(s->codebook_size);
+ s->next_codebook_buffer = av_malloc(s->codebook_size);
+
+ /* initialize the solid-color vectors */
+ if (s->vector_height == 4) {
+ codebook_index = 0xFF00 * 16;
+ for (i = 0; i < 256; i++)
+ for (j = 0; j < 16; j++)
+ s->codebook[codebook_index++] = i;
} else {
- s->codebook = av_malloc(V1_2_VECTOR_SIZE * V1_2_MAX_VECTORS);
- s->next_codebook_buffer = av_malloc(V1_2_VECTOR_SIZE * V1_2_MAX_VECTORS);
+ codebook_index = 0xF00 * 8;
+ for (i = 0; i < 256; i++)
+ for (j = 0; j < 8; j++)
+ s->codebook[codebook_index++] = i;
}
s->next_codebook_buffer_index = 0;
#define CHECK_COUNT() \
if (dest_index + count > dest_size) { \
- printf ("vqavideo: decode_format80 problem: next op would overflow dest_index\n"); \
- printf ("vqavideo: current dest_index = %d, count = %d, dest_size = %d\n", \
+ av_log(NULL, AV_LOG_ERROR, " VQA video: decode_format80 problem: next op would overflow dest_index\n"); \
+ av_log(NULL, AV_LOG_ERROR, " VQA video: current dest_index = %d, count = %d, dest_size = %d\n", \
dest_index, count, dest_size); \
return; \
}
-static void decode_format80(unsigned char *src, int src_size,
- unsigned char *dest, int dest_size) {
+static void decode_format80(const unsigned char *src, int src_size,
+ unsigned char *dest, int dest_size, int check_size) {
int src_index = 0;
int dest_index = 0;
while (src_index < src_size) {
- vqa_debug(" opcode %02X: ", src[src_index]);
+ av_dlog(NULL, " opcode %02X: ", src[src_index]);
/* 0x80 means that frame is finished */
if (src[src_index] == 0x80)
return;
if (dest_index >= dest_size) {
- printf ("vqavideo: decode_format80 problem: dest_index (%d) exceeded dest_size (%d)\n",
+ av_log(NULL, AV_LOG_ERROR, " VQA video: decode_format80 problem: dest_index (%d) exceeded dest_size (%d)\n",
dest_index, dest_size);
return;
}
if (src[src_index] == 0xFF) {
src_index++;
- count = LE_16(&src[src_index]);
+ count = AV_RL16(&src[src_index]);
src_index += 2;
- src_pos = LE_16(&src[src_index]);
+ src_pos = AV_RL16(&src[src_index]);
src_index += 2;
- vqa_debug("(1) copy %X bytes from absolute pos %X\n", count, src_pos);
+ av_dlog(NULL, "(1) copy %X bytes from absolute pos %X\n", count, src_pos);
CHECK_COUNT();
for (i = 0; i < count; i++)
dest[dest_index + i] = dest[src_pos + i];
} else if (src[src_index] == 0xFE) {
src_index++;
- count = LE_16(&src[src_index]);
+ count = AV_RL16(&src[src_index]);
src_index += 2;
color = src[src_index++];
- vqa_debug("(2) set %X bytes to %02X\n", count, color);
+ av_dlog(NULL, "(2) set %X bytes to %02X\n", count, color);
CHECK_COUNT();
memset(&dest[dest_index], color, count);
dest_index += count;
} else if ((src[src_index] & 0xC0) == 0xC0) {
count = (src[src_index++] & 0x3F) + 3;
- src_pos = LE_16(&src[src_index]);
+ src_pos = AV_RL16(&src[src_index]);
src_index += 2;
- vqa_debug("(3) copy %X bytes from absolute pos %X\n", count, src_pos);
+ av_dlog(NULL, "(3) copy %X bytes from absolute pos %X\n", count, src_pos);
CHECK_COUNT();
for (i = 0; i < count; i++)
dest[dest_index + i] = dest[src_pos + i];
} else if (src[src_index] > 0x80) {
count = src[src_index++] & 0x3F;
- vqa_debug("(4) copy %X bytes from source to dest\n", count);
+ av_dlog(NULL, "(4) copy %X bytes from source to dest\n", count);
CHECK_COUNT();
memcpy(&dest[dest_index], &src[src_index], count);
src_index += count;
} else {
count = ((src[src_index] & 0x70) >> 4) + 3;
- src_pos = BE_16(&src[src_index]) & 0x0FFF;
+ src_pos = AV_RB16(&src[src_index]) & 0x0FFF;
src_index += 2;
- vqa_debug("(5) copy %X bytes from relpos %X\n", count, src_pos);
+ av_dlog(NULL, "(5) copy %X bytes from relpos %X\n", count, src_pos);
CHECK_COUNT();
for (i = 0; i < count; i++)
dest[dest_index + i] = dest[dest_index - src_pos + i];
}
}
- if (dest_index < dest_size)
- printf ("vqavideo: decode_format80 problem: decode finished with dest_index (%d) < dest_size (%d)\n",
- dest_index, dest_size);
+ /* validate that the entire destination buffer was filled; this is
+ * important for decoding frame maps since each vector needs to have a
+ * codebook entry; it is not important for compressed codebooks because
+ * not every entry needs to be filled */
+ if (check_size)
+ if (dest_index < dest_size)
+ av_log(NULL, AV_LOG_ERROR, " VQA video: decode_format80 problem: decode finished with dest_index (%d) < dest_size (%d)\n",
+ dest_index, dest_size);
}
static void vqa_decode_chunk(VqaContext *s)
{
-
-//static int frame = 0;
unsigned int chunk_type;
unsigned int chunk_size;
int byte_skip;
unsigned int index = 0;
int i;
unsigned char r, g, b;
- unsigned int *palette32;
+ int index_shift;
int cbf0_chunk = -1;
int cbfz_chunk = -1;
int lobytes = 0;
int hibytes = s->decode_buffer_size / 2;
-//printf (" **** decoding frame #%d, stride = %d\n", frame++, s->frame.linesize[0]);
/* first, traverse through the frame and find the subchunks */
while (index < s->size) {
- chunk_type = BE_32(&s->buf[index]);
- chunk_size = BE_32(&s->buf[index + 4]);
+ chunk_type = AV_RB32(&s->buf[index]);
+ chunk_size = AV_RB32(&s->buf[index + 4]);
switch (chunk_type) {
break;
default:
- printf (" VQA video: Found unknown chunk type: %c%c%c%c (%08X)\n",
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: Found unknown chunk type: %c%c%c%c (%08X)\n",
(chunk_type >> 24) & 0xFF,
(chunk_type >> 16) & 0xFF,
(chunk_type >> 8) & 0xFF,
if ((cpl0_chunk != -1) && (cplz_chunk != -1)) {
/* a chunk should not have both chunk types */
- printf (" VQA video: problem: found both CPL0 and CPLZ chunks\n");
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: found both CPL0 and CPLZ chunks\n");
return;
}
/* convert the RGB palette into the machine's endian format */
if (cpl0_chunk != -1) {
- chunk_size = BE_32(&s->buf[cpl0_chunk + 4]);
+ chunk_size = AV_RB32(&s->buf[cpl0_chunk + 4]);
/* sanity check the palette size */
if (chunk_size / 3 > 256) {
- printf ("vqavideo: problem: found a palette chunk with %d colors\n",
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: found a palette chunk with %d colors\n",
chunk_size / 3);
return;
}
cpl0_chunk += CHUNK_PREAMBLE_SIZE;
- palette32 = (unsigned int *)s->palette;
for (i = 0; i < chunk_size / 3; i++) {
/* scale by 4 to transform 6-bit palette -> 8-bit */
r = s->buf[cpl0_chunk++] * 4;
g = s->buf[cpl0_chunk++] * 4;
b = s->buf[cpl0_chunk++] * 4;
- palette32[i] = (r << 16) | (g << 8) | (b);
+ s->palette[i] = (r << 16) | (g << 8) | (b);
}
}
if ((cbf0_chunk != -1) && (cbfz_chunk != -1)) {
/* a chunk should not have both chunk types */
- printf (" VQA video: problem: found both CBF0 and CBFZ chunks\n");
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: found both CBF0 and CBFZ chunks\n");
return;
}
- /* decompress the full codebook chunk into the codebook accumulation
- * buffer; this is safe since only the first frame is supposed to have
- * a full codebook */
+ /* decompress the full codebook chunk */
if (cbfz_chunk != -1) {
-/* yet to be handled */
-
+ chunk_size = AV_RB32(&s->buf[cbfz_chunk + 4]);
+ cbfz_chunk += CHUNK_PREAMBLE_SIZE;
+ decode_format80(&s->buf[cbfz_chunk], chunk_size,
+ s->codebook, s->codebook_size, 0);
}
/* copy a full codebook */
if (cbf0_chunk != -1) {
- index = cbf0_chunk;
-
- chunk_size = BE_32(&s->buf[cbf0_chunk + 4]);
+ chunk_size = AV_RB32(&s->buf[cbf0_chunk + 4]);
/* sanity check the full codebook size */
- if (s->vqa_version == 3) {
- if (chunk_size / (V3_VECTOR_SIZE) > V3_MAX_VECTORS) {
- printf (" VQA video: problem: CBF0 chunk too large (0x%X bytes)\n",
- chunk_size);
- return;
- }
- } else {
- if (chunk_size / (V1_2_VECTOR_SIZE) > V1_2_MAX_VECTORS) {
- printf (" VQA video: problem: CBF0 chunk too large (0x%X bytes)\n",
- chunk_size);
- return;
- }
+ if (chunk_size > MAX_CODEBOOK_SIZE) {
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: CBF0 chunk too large (0x%X bytes)\n",
+ chunk_size);
+ return;
}
cbf0_chunk += CHUNK_PREAMBLE_SIZE;
if (vptz_chunk == -1) {
/* something is wrong if there is no VPTZ chunk */
- printf (" VQA video: problem: no VPTZ chunk found\n");
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: no VPTZ chunk found\n");
return;
}
- /* decode frame */
- chunk_size = BE_32(&s->buf[vptz_chunk + 4]);
+ chunk_size = AV_RB32(&s->buf[vptz_chunk + 4]);
vptz_chunk += CHUNK_PREAMBLE_SIZE;
decode_format80(&s->buf[vptz_chunk], chunk_size,
- s->decode_buffer, s->decode_buffer_size);
-
-
-if (0)
-{
-int count = 0;
-printf (" finished decoding frame...");
-for (index = 8000; index < 16000; index++)
- if (s->decode_buffer[index] > 0x0F)
- count++;
-printf (" %d/8000 hibytes exceeded 0x0F\n", count);
-}
-
+ s->decode_buffer, s->decode_buffer_size, 1);
/* render the final PAL8 frame */
- for (y = 0; y < s->frame.linesize[0] * s->height;
+ if (s->vector_height == 4)
+ index_shift = 4;
+ else
+ index_shift = 3;
+ for (y = 0; y < s->frame.linesize[0] * s->height;
y += s->frame.linesize[0] * s->vector_height) {
for (x = y; x < y + s->width; x += 4, lobytes++, hibytes++) {
switch (s->vqa_version) {
case 1:
-/* still need sample media for this case (only one game, "Legend of
- * Kyrandia III : Malcolm's Revenge", is known to use this version) */
- lines = 0;
+ lobyte = s->decode_buffer[lobytes * 2];
+ hibyte = s->decode_buffer[(lobytes * 2) + 1];
+ vector_index = ((hibyte << 8) | lobyte) >> 3;
+ vector_index <<= index_shift;
+ lines = s->vector_height;
+ /* uniform color fill - a quick hack */
+ if (hibyte == 0xFF) {
+ while (lines--) {
+ s->frame.data[0][pixel_ptr + 0] = 255 - lobyte;
+ s->frame.data[0][pixel_ptr + 1] = 255 - lobyte;
+ s->frame.data[0][pixel_ptr + 2] = 255 - lobyte;
+ s->frame.data[0][pixel_ptr + 3] = 255 - lobyte;
+ pixel_ptr += s->frame.linesize[0];
+ }
+ lines=0;
+ }
break;
case 2:
lobyte = s->decode_buffer[lobytes];
hibyte = s->decode_buffer[hibytes];
- if (hibyte > 0x0F) {
- printf (" VQA video: problem: vector #%d/%d high byte out of range (0x%X >= 0x0F)\n",
- lobytes, s->decode_buffer_size / 2, hibyte);
- hibyte = lobyte = 0;
- } else if (hibyte == 0x0F)
- hibyte = 0;
vector_index = (hibyte << 8) | lobyte;
- vector_index *= V1_2_VECTOR_SIZE;
- lines = 2;
+ vector_index <<= index_shift;
+ lines = s->vector_height;
break;
case 3:
/* handle partial codebook */
if ((cbp0_chunk != -1) && (cbpz_chunk != -1)) {
/* a chunk should not have both chunk types */
- printf (" VQA video: problem: found both CBP0 and CBPZ chunks\n");
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: problem: found both CBP0 and CBPZ chunks\n");
return;
}
if (cbp0_chunk != -1) {
- chunk_size = BE_32(&s->buf[cbp0_chunk + 4]);
+ chunk_size = AV_RB32(&s->buf[cbp0_chunk + 4]);
cbp0_chunk += CHUNK_PREAMBLE_SIZE;
/* accumulate partial codebook */
if (s->partial_countdown == 0) {
/* time to replace codebook */
- memcpy(s->codebook, s->next_codebook_buffer,
+ memcpy(s->codebook, s->next_codebook_buffer,
s->next_codebook_buffer_index);
/* reset accounting */
if (cbpz_chunk != -1) {
-/* more partial codebook handling ... */
+ chunk_size = AV_RB32(&s->buf[cbpz_chunk + 4]);
+ cbpz_chunk += CHUNK_PREAMBLE_SIZE;
+
+ /* accumulate partial codebook */
+ memcpy(&s->next_codebook_buffer[s->next_codebook_buffer_index],
+ &s->buf[cbpz_chunk], chunk_size);
+ s->next_codebook_buffer_index += chunk_size;
+ s->partial_countdown--;
+ if (s->partial_countdown == 0) {
+
+ /* decompress codebook */
+ decode_format80(s->next_codebook_buffer,
+ s->next_codebook_buffer_index,
+ s->codebook, s->codebook_size, 0);
+
+ /* reset accounting */
+ s->next_codebook_buffer_index = 0;
+ s->partial_countdown = s->partial_count;
+ }
}
}
static int vqa_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
- VqaContext *s = (VqaContext *)avctx->priv_data;
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
+ VqaContext *s = avctx->priv_data;
s->buf = buf;
s->size = buf_size;
avctx->release_buffer(avctx, &s->frame);
if (avctx->get_buffer(avctx, &s->frame)) {
- printf (" VQA Video: get_buffer() failed\n");
+ av_log(s->avctx, AV_LOG_ERROR, " VQA Video: get_buffer() failed\n");
return -1;
}
/* make the palette available on the way out */
memcpy(s->frame.data[1], s->palette, PALETTE_COUNT * 4);
+ s->frame.palette_has_changed = 1;
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame;
return buf_size;
}
-static int vqa_decode_end(AVCodecContext *avctx)
+static av_cold int vqa_decode_end(AVCodecContext *avctx)
{
- VqaContext *s = (VqaContext *)avctx->priv_data;
+ VqaContext *s = avctx->priv_data;
av_free(s->codebook);
av_free(s->next_codebook_buffer);
return 0;
}
-AVCodec vqa_decoder = {
- "vqavideo",
- CODEC_TYPE_VIDEO,
- CODEC_ID_WS_VQA,
- sizeof(VqaContext),
- vqa_decode_init,
- NULL,
- vqa_decode_end,
- vqa_decode_frame,
- CODEC_CAP_DR1,
+AVCodec ff_vqa_decoder = {
+ .name = "vqavideo",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_WS_VQA,
+ .priv_data_size = sizeof(VqaContext),
+ .init = vqa_decode_init,
+ .close = vqa_decode_end,
+ .decode = vqa_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Westwood Studios VQA (Vector Quantized Animation) video"),
};
projects / ffmpeg / blobdiff