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query_format support by Tilman Sauerbeck <tsauerbeck@users.sourceforge.net>

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7393 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
alex 2002-09-13 22:13:49 +00:00
parent faa42bda65
commit e8b38fb995
2 changed files with 85 additions and 111 deletions
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2
etc/codecs.conf
View File

@ -66,7 +66,7 @@ videocodec mtga
comment "Only 24bpp and 32bpp RGB TGA files supported"
fourcc mtga,MTGA
driver mtga
out BGR32 ;,BGR24
out BGR32,BGR24
videocodec fli
info "Autodesk FLI/FLC Animation"

194
libmpcodecs/vd_mtga.c
View File

@ -48,34 +48,44 @@ typedef struct
unsigned char bpp;
unsigned char origin; /* 0 = lower left, 1 = upper left */
unsigned short start_row;
unsigned short increment;
} TGAInfo;
typedef struct
{
/* red, green, blue, alpha */
unsigned char r;
unsigned char g;
unsigned char b;
unsigned char a;
} ColorChannels;
static unsigned int out_fmt = 0;
static int last_w = -1;
static int last_h = -1;
static int last_c = -1;
/* to set/get/query special features/parameters */
static int control(sh_video_t *sh, int cmd, void *arg, ...)
{
return CONTROL_UNKNOWN;
TGAInfo *info = (TGAInfo *) sh->context;
switch (cmd)
{
case VDCTRL_QUERY_FORMAT:
if ((*((int *) arg) == IMGFMT_BGR32 && info->bpp == 32) || (*((int *) arg) == IMGFMT_BGR24 && info->bpp == 24))
return CONTROL_TRUE;
else
return CONTROL_FALSE;
break;
default:
return CONTROL_UNKNOWN;
break;
}
}
/* init driver */
static int init(sh_video_t *sh)
{
sh->context = (TGAInfo *) calloc(1, sizeof(TGAInfo));
last_w = -1;
return 1;
}
@ -83,110 +93,70 @@ static int init(sh_video_t *sh)
/* uninit driver */
static void uninit(sh_video_t *sh)
{
TGAInfo *info = sh->context;
free(info);
return;
}
/* decode a runlength-encoded tga */
static void decode_rle_tga(TGAInfo info, unsigned char *data, mp_image_t **mpi)
static void decode_rle_tga(TGAInfo *info, unsigned char *data, mp_image_t **mpi)
{
ColorChannels chans = {0, 0, 0, 0};
short i, num_bytes = info->bpp / 8;
unsigned char repetitions, packet_header, *final;
unsigned short row, col, i;
short modifier;
unsigned short row, col;
/* if img.origin is 0, we decode from bottom to top. if it's 1, we decode from top to bottom */
row = (info.origin) ? 0 : info.height - 1;
modifier = (info.origin) ? 1 : -1;
for (;;)
/* see line 207 to see why this loop is set up like this */
for (row = info->start_row; (!info->origin && row) || (info->origin && row < info->height); row += info->increment)
{
final = (*mpi)->planes[0] + (*mpi)->stride[0] * row;
for (col = 0; col < info.width;)
for (col = 0; col < info->width; col += repetitions)
{
packet_header = *data++;
repetitions = 1 + (packet_header & 0x7f);
if (packet_header & 0x80)
if (packet_header & 0x80) /* runlength encoded packet */
{
chans.b = *data++;
chans.g = *data++;
chans.r = *data++;
chans.a = (info.bpp == 32) ? *data++ : 255;
memcpy(final, data, num_bytes);
for (i = 0; i < repetitions; i++)
{
*final++ = chans.r;
*final++ = chans.g;
*final++ = chans.b;
*final++ = chans.a;
col++;
}
for (i = num_bytes; i < repetitions; i *= 2)
memcpy(&final[i], final, i);
for (; i < repetitions * num_bytes; i += 3)
memcpy(&final[i], final, num_bytes);
}
else /* raw packet */
{
for (i = 0; i < repetitions; i++)
{
chans.b = *data++;
chans.g = *data++;
chans.r = *data++;
*final++ = chans.r;
*final++ = chans.g;
*final++ = chans.b;
*final++ = chans.a = (info.bpp == 32) ? *data++ : 255;
col++;
}
}
memcpy(final, data, repetitions * num_bytes);
data += (packet_header & 0x80) ? num_bytes : repetitions * num_bytes;
final += repetitions * num_bytes;
}
row = row + modifier;
if ((!info.origin && !row) || (info.origin && row >= info.height))
break;
}
return;
}
static void decode_uncompressed_tga(TGAInfo info, unsigned char *data, mp_image_t **mpi)
static void decode_uncompressed_tga(TGAInfo *info, unsigned char *data, mp_image_t **mpi)
{
ColorChannels chans;
unsigned short row, col;
unsigned short row;
unsigned char *final;
short modifier;
short num_bytes = info->bpp / 8;
/* if img.origin is 0, we decode from bottom to top. if it's 1, we decode from top to bottom */
row = (info.origin) ? 0 : info.height - 1;
modifier = (info.origin) ? 1 : -1;
for (;;)
/* see line 207 to see why this loop is set up like this */
for (row = info->start_row; (!info->origin && row) || (info->origin && row < info->height); row += info->increment)
{
final = (*mpi)->planes[0] + (*mpi)->stride[0] * row;
for (col = 0; col < info.width; col++)
{
chans.b = *data++;
chans.g = *data++;
chans.r = *data++;
*final++ = chans.r;
*final++ = chans.g;
*final++ = chans.b;
*final++ = info.bpp == 32 ? *data++ : 255;
}
row = row + modifier;
if ((!info.origin && !row) || (info.origin && row >= info.height))
break;
memcpy(final, data, info->width * num_bytes);
data += info->width * num_bytes;
}
@ -194,20 +164,20 @@ static void decode_uncompressed_tga(TGAInfo info, unsigned char *data, mp_image_
}
static short read_tga_header(unsigned char *buf, TGAInfo *info)
static short read_tga_header(unsigned char *buf, TGAInfo **info)
{
(*info).id_len = buf[0];
(*info)->id_len = buf[0];
(*info).img_type = buf[2];
(*info)->img_type = buf[2];
/* targa data is always stored in little endian byte order */
(*info).width = le2me_16(*(unsigned short *) &buf[12]);
(*info).height = le2me_16(*(unsigned short *) &buf[14]);
(*info)->width = le2me_16(*(unsigned short *) &buf[12]);
(*info)->height = le2me_16(*(unsigned short *) &buf[14]);
(*info).bpp = buf[16];
(*info)->bpp = buf[16];
(*info).origin = (buf[17] & 0x20) >> 5;
(*info)->origin = (buf[17] & 0x20) >> 5;
/* FIXME check for valid targa data */
return 0;
@ -217,7 +187,7 @@ static short read_tga_header(unsigned char *buf, TGAInfo *info)
/* decode a frame */
static mp_image_t *decode(sh_video_t *sh, void *raw, int len, int flags)
{
TGAInfo info;
TGAInfo *info = sh->context;
unsigned char *data = raw;
mp_image_t *mpi;
@ -227,43 +197,47 @@ static mp_image_t *decode(sh_video_t *sh, void *raw, int len, int flags)
read_tga_header(data, &info); /* read information about the file */
if (info.bpp == 24)
out_fmt = IMGFMT_RGB24;
else if (info.bpp == 32)
out_fmt = IMGFMT_RGB32;
if (info->bpp == 24)
out_fmt = IMGFMT_BGR24;
else if (info->bpp == 32)
out_fmt = IMGFMT_BGR32;
else
{
mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Unsupported TGA type!\n");
return NULL;
}
if (info.img_type != TGA_UNCOMP_TRUECOLOR && info.img_type != TGA_RLE_TRUECOLOR) /* not a true color image */
if (info->img_type != TGA_UNCOMP_TRUECOLOR && info->img_type != TGA_RLE_TRUECOLOR) /* not a true color image */
{
mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Unsupported TGA type: %i!\n", info.img_type);
mp_msg(MSGT_DECVIDEO, MSGL_INFO, "Unsupported TGA type: %i!\n", info->img_type);
return NULL;
}
/* if img.origin is 0, we decode from bottom to top. if it's 1, we decode from top to bottom */
info->start_row = (info->origin) ? 0 : info->height - 1;
info->increment = (info->origin) ? 1 : -1;
/* set data to the beginning of the image data */
data = data + 18 + info.id_len;
data += 18 + info->id_len;
/* (re)init libvo if image parameters changed (width/height/colorspace) */
if (last_w != info.width || last_h != info.height || last_c != out_fmt)
if (last_w != info->width || last_h != info->height || last_c != out_fmt)
{
last_w = info.width;
last_h = info.height;
last_w = info->width;
last_h = info->height;
last_c = out_fmt;
if (!out_fmt || !mpcodecs_config_vo(sh, info.width, info.height, out_fmt))
if (!out_fmt || !mpcodecs_config_vo(sh, info->width, info->height, out_fmt))
return NULL;
}
if (!(mpi = mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE, info.width, info.height)))
if (!(mpi = mpcodecs_get_image(sh, MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE, info->width, info->height)))
return NULL;
/* finally decode the image */
if (info.img_type == TGA_UNCOMP_TRUECOLOR)
decode_uncompressed_tga(info, data, &mpi);
else if (info.img_type == TGA_RLE_TRUECOLOR)
if (info->img_type == TGA_UNCOMP_TRUECOLOR)
decode_uncompressed_tga(info, data, &mpi);
else if (info->img_type == TGA_RLE_TRUECOLOR)
decode_rle_tga(info, data, &mpi);
else
mpi = NULL;