// JAM format decoder, used by Blood Omnicide
+#ifdef LIBAVCODEC
+//#define JAM_USELIBAVCODECSCALE
+#endif
+
typedef struct jamdecodestream_s
{
- int error;
+ qfile_t *file;
+ double info_framerate;
+ unsigned int info_frames;
+ unsigned int info_imagewidth;
+ unsigned int info_imageheight;
+ double info_aspectratio;
+ float colorscale;
+ unsigned char colorsub;
- qfile_t *file;
- double info_framerate;
- unsigned int info_frames;
- unsigned int info_imagewidth;
- unsigned int info_imageheight;
- int doubleres;
- float colorscale;
- unsigned char colorsub;
- float stipple;
+ // info used during decoding
+ unsigned char *frame;
+ unsigned char *frame_prev;
+ unsigned char frame_palette[768];
+ unsigned char *frame_compressed;
+ unsigned int framesize;
+ unsigned int framenum;
- // info used durign decoding
- unsigned char *videopixels;
- unsigned char *compressed;
- unsigned char *framedata;
- unsigned char *prevframedata;
- unsigned char colormap[768];
- unsigned int framesize;
- unsigned int framenum;
+ // libavcodec scaling
+#ifdef JAM_USELIBAVCODECSCALE
+ unsigned char *frame_output_buffer;
+ AVFrame *frame_output;
+ AVFrame *frame_output_scale;
+ unsigned int framewidth;
+ unsigned int frameheight;
+#endif
// channel the sound file is being played on
int sndchan;
}
jamdecodestream_t;
-#define JAMDECODEERROR_NONE 0
-#define JAMDECODEERROR_EOF 1
-#define JAMDECODEERROR_READERROR 2
-#define JAMDECODEERROR_BAD_FRAME_HEADER 3
-#define JAMDECODEERROR_BAD_OUTPUT_SIZE 4
-#define JAMDECODEERROR_BAD_COLORMAP 5
-
// opens a stream
void jam_close(void *stream);
unsigned int jam_getwidth(void *stream);
unsigned int jam_getheight(void *stream);
double jam_getframerate(void *stream);
+double jam_getaspectratio(void *stream);
int jam_video(void *stream, void *imagedata, unsigned int Rmask, unsigned int Gmask, unsigned int Bmask, unsigned int bytesperpixel, int imagebytesperrow);
-static void *jam_open(clvideo_t *video, char *filename, const char **errorstring)
+void *jam_open(clvideo_t *video, char *filename, const char **errorstring)
{
- unsigned char jamHead[16];
- char *wavename;
+ char jamHead[16];
jamdecodestream_t *s;
- qfile_t *file;
+ char *wavename;
+ // allocate stream structure
s = (jamdecodestream_t *)Z_Malloc(sizeof(jamdecodestream_t));
- if (s != NULL)
+ memset(s, 0, sizeof(jamdecodestream_t));
+ if (s == NULL)
{
- if ((file = FS_OpenVirtualFile(filename, false)))
- {
- s->file = file;
- if (FS_Read(s->file, &jamHead, 16))
- {
- if (!memcmp(jamHead, "JAM", 3))
- {
- s->info_imagewidth = LittleLong(*(jamHead + 4));
- s->info_imageheight = LittleLong(*(jamHead + 8));
- s->info_frames = LittleLong(*(jamHead + 12));
- s->info_framerate = 15;
- s->doubleres = 0;
- s->colorscale = 0.70;
- s->colorsub = 8;
- s->stipple = 0.4;
- s->framesize = s->info_imagewidth * s->info_imageheight;
- if (s->framesize > 0)
- {
- s->compressed = (unsigned char *)Z_Malloc(s->framesize);
- s->framedata = (unsigned char *)Z_Malloc(s->framesize * 2);
- s->prevframedata = (unsigned char *)Z_Malloc(s->framesize * 2);
- s->videopixels = (unsigned char *)Z_Malloc(s->framesize * 4); // bgra, doubleres
- if (s->compressed != NULL && s->framedata != NULL && s->prevframedata != NULL && s->videopixels != NULL)
- {
- size_t namelen;
+ *errorstring = "unable to allocate memory for stream info structure";
+ return NULL;
+ }
+ s->sndchan = -1;
- namelen = strlen(filename) + 10;
- wavename = (char *)Z_Malloc(namelen);
- if (wavename)
- {
- sfx_t* sfx;
+ // open file
+ s->file = FS_OpenVirtualFile(filename, true);
+ if (!s->file)
+ {
+ *errorstring = "unable to open videofile";
+ jam_close(s);
+ return NULL;
+ }
- FS_StripExtension(filename, wavename, namelen);
- strlcat(wavename, ".wav", namelen);
- sfx = S_PrecacheSound(wavename, false, false);
- if (sfx != NULL)
- s->sndchan = S_StartSound (-1, 0, sfx, vec3_origin, 1.0f, 0);
- else
- s->sndchan = -1;
- Z_Free(wavename);
- }
- // all is well...
- // set the module functions
- s->framenum = 0;
- video->close = jam_close;
- video->getwidth = jam_getwidth;
- video->getheight = jam_getheight;
- video->getframerate = jam_getframerate;
- video->decodeframe = jam_video;
- return s;
- }
- else if (errorstring != NULL)
- *errorstring = "unable to allocate memory for stream info structure";
- if (s->compressed != NULL)
- Z_Free(s->compressed);
- if (s->framedata != NULL)
- Z_Free(s->framedata);
- if (s->prevframedata != NULL)
- Z_Free(s->prevframedata);
- if (s->videopixels != NULL)
- Z_Free(s->videopixels);
- }
- else if (errorstring != NULL)
- *errorstring = "bad framesize";
- }
- else if (errorstring != NULL)
- *errorstring = "not JAM videofile";
- }
- else if (errorstring != NULL)
- *errorstring = "unexpected EOF";
- FS_Close(file);
- }
- else if (errorstring != NULL)
- *errorstring = "unable to open videofile";
+ // read header
+ if (!FS_Read(s->file, jamHead, 16))
+ {
+ *errorstring = "JamDecoder: unexpected EOF reading header";
+ jam_close(s);
+ return NULL;
+ }
+ if (memcmp(jamHead, "JAM", 4))
+ {
+ *errorstring = "JamDecoder: not a JAM file";
+ jam_close(s);
+ return NULL;
+ }
+
+ s->info_imagewidth = LittleLong(*(jamHead + 4));
+ s->info_imageheight = LittleLong(*(jamHead + 8));
+ s->info_frames = LittleLong(*(jamHead + 12)) - 1;
+ s->info_framerate = 15;
+ s->info_aspectratio = (double)s->info_imagewidth / (double)s->info_imageheight;
+ s->colorscale = 0.90;
+ s->colorsub = 4;
+ s->framesize = s->info_imagewidth * s->info_imageheight;
+
+ // allocate frame input/output
+ if (s->framesize < 0)
+ {
+ *errorstring = "JamDecoder: bad framesize";
+ jam_close(s);
+ return NULL;
+ }
+ s->frame = (unsigned char *)Z_Malloc(s->framesize * 2);
+ s->frame_prev = (unsigned char *)Z_Malloc(s->framesize * 2);
+ s->frame_compressed = (unsigned char *)Z_Malloc(s->framesize);
+ if (s->frame_compressed == NULL || s->frame == NULL || s->frame_prev == NULL)
+ {
+ *errorstring = "JamDecoder: unable to allocate memory for video decoder";
+ jam_close(s);
+ return NULL;
+ }
+
+ // scale support provided by libavcodec
+#ifdef JAM_USELIBAVCODECSCALE
+ s->framewidth = s->info_imagewidth;
+ s->frameheight = s->info_imageheight;
+
+ // min size
+ if (cl_video_libavcodec_minwidth.integer > 0)
+ s->info_imagewidth = max(s->info_imagewidth, (unsigned int)cl_video_libavcodec_minwidth.integer);
+ if (cl_video_libavcodec_minheight.integer > 0)
+ s->info_imageheight = max(s->info_imageheight, (unsigned int)cl_video_libavcodec_minheight.integer);
+
+ // allocate output
+ s->frame_output_buffer = (unsigned char *)Z_Malloc(s->framesize * 4);
+ s->frame_output = AvCodec_AllocFrame();
+ s->frame_output_scale = AvCodec_AllocFrame();
+ if (!s->frame_output_buffer || !s->frame_output || !s->frame_output_scale)
+ {
+ *errorstring = "JamDecoder: failed to allocate LibAvcodec frame";
+ jam_close(s);
Z_Free(s);
+ return NULL;
}
- else if (errorstring != NULL)
- *errorstring = "unable to allocate memory for stream info structure";
- return NULL;
+#endif
+
+ // everything is ok
+ // set the module functions
+ s->framenum = 0;
+ video->close = jam_close;
+ video->getwidth = jam_getwidth;
+ video->getheight = jam_getheight;
+ video->getframerate = jam_getframerate;
+ video->decodeframe = jam_video;
+ video->getaspectratio = jam_getaspectratio;
+
+ // set sound
+ size_t namelen;
+ namelen = strlen(filename) + 10;
+ wavename = (char *)Z_Malloc(namelen);
+ if (wavename)
+ {
+ sfx_t* sfx;
+ FS_StripExtension(filename, wavename, namelen);
+ strlcat(wavename, ".wav", namelen);
+ sfx = S_PrecacheSound(wavename, false, false);
+ if (sfx != NULL)
+ s->sndchan = S_StartSound (-1, 0, sfx, vec3_origin, 1.0f, 0);
+ else
+ s->sndchan = -1;
+ Z_Free(wavename);
+ }
+
+ return s;
}
// closes a stream
jamdecodestream_t *s = (jamdecodestream_t *)stream;
if (s == NULL)
return;
- Z_Free(s->compressed);
- Z_Free(s->framedata);
- Z_Free(s->prevframedata);
- Z_Free(s->videopixels);
+ if (s->frame_compressed)
+ Z_Free(s->frame_compressed);
+ s->frame_compressed = NULL;
+ if (s->frame)
+ Z_Free(s->frame);
+ s->frame = NULL;
+ if (s->frame_prev)
+ Z_Free(s->frame_prev);
+ s->frame_prev = NULL;
if (s->sndchan != -1)
S_StopChannel(s->sndchan, true, true);
+ s->sndchan = -1;
if (s->file)
FS_Close(s->file);
+ s->file = NULL;
+#ifdef JAM_USELIBAVCODECSCALE
+ if (s->frame_output_buffer)
+ Z_Free(s->frame_output_buffer);
+ s->frame_output_buffer = NULL;
+ if (s->frame_output)
+ AvUtil_Free(s->frame_output);
+ s->frame_output = NULL;
+ if (s->frame_output_scale)
+ AvUtil_Free(s->frame_output_scale);
+ s->frame_output_scale = NULL;
+#endif
Z_Free(s);
}
unsigned int jam_getwidth(void *stream)
{
jamdecodestream_t *s = (jamdecodestream_t *)stream;
- if (s->doubleres)
- return s->info_imagewidth * 2;
return s->info_imagewidth;
}
unsigned int jam_getheight(void *stream)
{
jamdecodestream_t *s = (jamdecodestream_t *)stream;
- if (s->doubleres)
- return s->info_imageheight * 2;
return s->info_imageheight;
}
return s->info_framerate;
}
+// returns aspect ration of the stream
+double jam_getaspectratio(void *stream)
+{
+ jamdecodestream_t *s = (jamdecodestream_t *)stream;
+ return s->info_aspectratio;
+}
// decode JAM frame
static void jam_decodeframe(unsigned char *inbuf, unsigned char *outbuf, unsigned char *prevbuf, int outsize, int frametype)
int jam_video(void *stream, void *imagedata, unsigned int Rmask, unsigned int Gmask, unsigned int Bmask, unsigned int bytesperpixel, int imagebytesperrow)
{
unsigned char frameHead[16], *b;
- unsigned int compsize, outsize, i, j;
+ unsigned int compsize, outsize, i;
jamdecodestream_t *s = (jamdecodestream_t *)stream;
- s->error = DPVSIMPLEDECODEERROR_NONE;
- if (s->framenum < s->info_frames)
- {
+ // EOF
+ if (s->framenum >= s->info_frames)
+ return 1;
+ s->framenum++;
+
readframe:
- if (FS_Read(s->file, &frameHead, 16))
- {
- compsize = LittleLong(*(frameHead + 8)) - 16;
- outsize = LittleLong(*(frameHead + 12));
- if (compsize > s->framesize || outsize > s->framesize)
- s->error = JAMDECODEERROR_BAD_FRAME_HEADER;
- else if (FS_Read(s->file, s->compressed, compsize))
- {
- // palette goes interleaved with special flag
- if (frameHead[0] == 2)
- {
- if (compsize == 768)
- {
- memcpy(s->colormap, s->compressed, 768);
- for(i = 0; i < 768; i++)
- s->colormap[i] = (unsigned char)(bound(0, (s->colormap[i] * s->colorscale) - s->colorsub, 255));
- goto readframe;
- }
- //else
- // s->error = JAMDECODEERROR_BAD_COLORMAP;
- }
- else
- {
- // decode frame
- // shift buffers to provide current and previous one, decode
- b = s->prevframedata;
- s->prevframedata = s->framedata;
- s->framedata = b;
- jam_decodeframe(s->compressed, s->framedata, s->prevframedata, outsize, frameHead[4]);
- // make 32bit imagepixels from 8bit palettized frame
- if (s->doubleres)
- b = s->videopixels;
- else
- b = (unsigned char *)imagedata;
- for(i = 0; i < s->framesize; i++)
- {
- // bgra
- *b++ = s->colormap[s->framedata[i]*3 + 2];
- *b++ = s->colormap[s->framedata[i]*3 + 1];
- *b++ = s->colormap[s->framedata[i]*3];
- *b++ = 255;
- }
- // nearest 2x
- if (s->doubleres)
- {
- for (i = 0; i < s->info_imageheight; i++)
- {
- b = (unsigned char *)imagedata + (s->info_imagewidth*2*4)*(i*2);
- for (j = 0; j < s->info_imagewidth; j++)
- {
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 1];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 2];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 3];
- //
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 1];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 2];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 3];
- }
- b = (unsigned char *)imagedata + (s->info_imagewidth*2*4)*(i*2 + 1);
- for (j = 0; j < s->info_imagewidth; j++)
- {
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 1];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 2];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 3];
- //
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 1];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 2];
- *b++ = s->videopixels[i*s->info_imagewidth*4 + j*4 + 3];
- }
- }
- // do stippling
- if (s->stipple)
- {
- for (i = 0; i < s->info_imageheight; i++)
- {
- b = (unsigned char *)imagedata + (s->info_imagewidth * 4 * 2 * 2 * i);
- for (j = 0; j < s->info_imagewidth; j++)
- {
- b[0] = b[0] * s->stipple;
- b[1] = b[1] * s->stipple;
- b[2] = b[2] * s->stipple;
- b += 4;
- b[0] = b[0] * s->stipple;
- b[1] = b[1] * s->stipple;
- b[2] = b[2] * s->stipple;
- b += 4;
- }
- }
- }
- }
+ // read frame header
+ if (!FS_Read(s->file, &frameHead, 16))
+ {
+ Con_Printf("JamDecoder: unexpected EOF on frame %i\n", s->framenum);
+ return 1;
+ }
+ compsize = LittleLong(*(frameHead + 8)) - 16;
+ outsize = LittleLong(*(frameHead + 12));
+ if (compsize > s->framesize || outsize > s->framesize)
+ {
+ Con_Printf("JamDecoder: got bogus header on frame %i\n", s->framenum);
+ return 1;
+ }
- }
- }
- else
- s->error = JAMDECODEERROR_READERROR;
+ // read frame contents
+ if (!FS_Read(s->file, s->frame_compressed, compsize))
+ {
+ Con_Printf("JamDecoder: unexpected EOF on frame %i\n", s->framenum);
+ return 1;
+ }
+
+ // palette goes interleaved with special flag
+ if (frameHead[0] == 2)
+ {
+ if (compsize == 768)
+ {
+ memcpy(s->frame_palette, s->frame_compressed, 768);
+ for(i = 0; i < 768; i++)
+ s->frame_palette[i] = (unsigned char)(bound(0, (s->frame_palette[i] * s->colorscale) - s->colorsub, 255));
+ goto readframe;
}
- else
- s->error = JAMDECODEERROR_READERROR;
}
else
- s->error = DPVSIMPLEDECODEERROR_EOF;
- return s->error;
+ {
+ // decode frame
+ // shift buffers to provide current and previous one, decode
+ b = s->frame_prev;
+ s->frame_prev = s->frame;
+ s->frame = b;
+ jam_decodeframe(s->frame_compressed, s->frame, s->frame_prev, outsize, frameHead[4]);
+#ifdef JAM_USELIBAVCODECSCALE
+ // make BGRA imagepixels from 8bit palettized frame
+ b = (unsigned char *)s->frame_output_buffer;
+ for(i = 0; i < s->framesize; i++)
+ {
+ *b++ = s->frame_palette[s->frame[i]*3 + 2];
+ *b++ = s->frame_palette[s->frame[i]*3 + 1];
+ *b++ = s->frame_palette[s->frame[i]*3];
+ *b++ = 255;
+ }
+ // scale
+ AvCodec_FillPicture((AVPicture *)s->frame_output, (uint8_t *)s->frame_output_buffer, PIX_FMT_BGRA, s->framewidth, s->frameheight);
+ AvCodec_FillPicture((AVPicture *)s->frame_output_scale, (uint8_t *)imagedata, PIX_FMT_BGRA, s->info_imagewidth, s->info_imageheight);
+ SwsContext *scale_context = SwScale_GetCachedContext(NULL, s->framewidth, s->frameheight, PIX_FMT_BGRA, s->info_imagewidth, s->info_imageheight, PIX_FMT_BGRA, libavcodec_scalers[max(0, min(LIBAVCODEC_SCALERS, cl_video_libavcodec_scaler.integer))], NULL, NULL, NULL);
+ if (!scale_context)
+ {
+ Con_Printf("JamDecoder: LibAvcodec: error creating scale context frame %i\n", s->framenum);
+ return 1;
+ }
+ if (!SwScale_Scale(scale_context, s->frame_output->data, s->frame_output->linesize, 0, s->frameheight, s->frame_output_scale->data, s->frame_output_scale->linesize))
+ Con_Printf("JamDecoder: LibAvcodec : error scaling frame\n", s->framenum);
+ SwScale_FreeContext(scale_context);
+#else
+ // make BGRA imagepixels from 8bit palettized frame
+ b = (unsigned char *)imagedata;
+ for(i = 0; i < s->framesize; i++)
+ {
+ // bgra
+ *b++ = s->frame_palette[s->frame[i]*3 + 2];
+ *b++ = s->frame_palette[s->frame[i]*3 + 1];
+ *b++ = s->frame_palette[s->frame[i]*3];
+ *b++ = 255;
+ }
+#endif
+ }
+ return 0;
}
projects / xonotic / darkplaces.git / blobdiff