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demux_mkv: code cleanup 

Cleanup based on results from cppcheck-1.59
Reduce the scope of several variables
Replace 2 calloc/realloc calls with a single malloc
This commit is contained in:
eng 2013-04-14 00:04:58 -04:00 committed by wm4
parent 5dabaaf093
commit 06eee1b675
1 changed files with 23 additions and 20 deletions
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43
demux/demux_mkv.c
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@ -1184,7 +1184,9 @@ static const videocodec_info_t vinfo[] = {
static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
int vid)
{
BITMAPINFOHEADER *bih;
BITMAPINFOHEADER *bih = &(BITMAPINFOHEADER){0};
unsigned char *extradata;
unsigned int extradata_size = 0;
sh_video_t *sh_v;
bool raw = false;
@ -1196,7 +1198,6 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
return 1;
src = (BITMAPINFOHEADER *) track->private_data;
bih = calloc(1, track->private_size);
bih->biSize = le2me_32(src->biSize);
bih->biWidth = le2me_32(src->biWidth);
bih->biHeight = le2me_32(src->biHeight);
@ -1208,16 +1209,14 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
bih->biYPelsPerMeter = le2me_32(src->biYPelsPerMeter);
bih->biClrUsed = le2me_32(src->biClrUsed);
bih->biClrImportant = le2me_32(src->biClrImportant);
memcpy(bih + 1,
src + 1,
track->private_size - sizeof(*bih));
extradata = track->private_data;
extradata_size = track->private_size - sizeof(*bih);
if (track->v_width == 0)
track->v_width = bih->biWidth;
if (track->v_height == 0)
track->v_height = bih->biHeight;
} else {
bih = calloc(1, sizeof(*bih));
bih->biSize = sizeof(*bih);
bih->biWidth = track->v_width;
bih->biHeight = track->v_height;
@ -1229,14 +1228,13 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
|| !strcmp(track->codec_id, MKV_V_REALV20)
|| !strcmp(track->codec_id, MKV_V_REALV30)
|| !strcmp(track->codec_id, MKV_V_REALV40))) {
unsigned char *dst, *src;
unsigned char *src;
uint32_t type2;
unsigned int cnt;
src = (uint8_t *) track->private_data + RVPROPERTIES_SIZE;
cnt = track->private_size - RVPROPERTIES_SIZE;
bih = realloc(bih, sizeof(*bih) + 8 + cnt);
bih->biSize = 48 + cnt;
bih->biPlanes = 1;
type2 = AV_RB32(src - 4);
@ -1245,9 +1243,9 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
else
bih->biCompression =
mmioFOURCC('R', 'V', track->codec_id[9], '0');
dst = (unsigned char *) (bih + 1);
// copy type1 and type2 info from rv properties
memcpy(dst, src - 8, 8 + cnt);
extradata_size = cnt + 8;
extradata = src - 8;
track->realmedia = 1;
} else if (strcmp(track->codec_id, MKV_V_UNCOMPRESSED) == 0) {
// raw video, "like AVI" - this is a FourCC
@ -1261,15 +1259,14 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
if (vi->extradata && track->private_data
&& (track->private_size > 0)) {
bih->biSize += track->private_size;
bih = realloc(bih, bih->biSize);
memcpy(bih + 1, track->private_data, track->private_size);
extradata = track->private_data;
extradata_size = track->private_size;
}
if (!vi->id) {
mp_tmsg(MSGT_DEMUX, MSGL_WARN, "[mkv] Unknown/unsupported "
"CodecID (%s) or missing/bad CodecPrivate\n"
"[mkv] data (track %u).\n",
track->codec_id, track->tnum);
free(bih);
return 1;
}
}
@ -1278,7 +1275,14 @@ static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track,
sh_v = new_sh_video(demuxer, vid);
sh_v->gsh->demuxer_id = track->tnum;
sh_v->gsh->title = talloc_strdup(sh_v, track->name);
sh_v->bih = bih;
sh_v->bih = malloc(sizeof(BITMAPINFOHEADER) + extradata_size);
if (!sh_v->bih) {
mp_msg(MSGT_DEMUX, MSGL_FATAL, "Memory allocation failure!\n");
abort();
}
*sh_v->bih = *bih;
if (extradata_size)
memcpy(sh_v->bih + 1, extradata, extradata_size);
sh_v->format = sh_v->bih->biCompression;
if (raw) {
sh_v->gsh->codec = "rawvideo";
@ -1884,9 +1888,9 @@ static double real_fix_timestamp(unsigned char *buf, unsigned int timestamp, uns
unsigned char *s = buf + 1 + (*buf+1)*8;
uint32_t buffer= (s[0]<<24) + (s[1]<<16) + (s[2]<<8) + s[3];
unsigned int kf=timestamp;
int pict_type;
if(format==mmioFOURCC('R','V','3','0') || format==mmioFOURCC('R','V','4','0')){
int pict_type;
if(format==mmioFOURCC('R','V','3','0')){
SKIP_BITS(3);
pict_type= SHOW_BITS(2);
@ -1962,7 +1966,6 @@ static void handle_realaudio(demuxer_t *demuxer, mkv_track_t *track,
uint8_t *buffer = data.start;
uint32_t size = data.len;
demux_packet_t *dp;
int x;
if ((track->a_formattag == mmioFOURCC('2', '8', '_', '8'))
|| (track->a_formattag == mmioFOURCC('c', 'o', 'o', 'k'))
@ -1970,6 +1973,7 @@ static void handle_realaudio(demuxer_t *demuxer, mkv_track_t *track,
|| (track->a_formattag == mmioFOURCC('s', 'i', 'p', 'r'))) {
// if(!block_bref)
// spc = track->sub_packet_cnt = 0;
int x;
switch (track->a_formattag) {
case mmioFOURCC('2', '8', '_', '8'):
for (x = 0; x < sph / 2; x++)
@ -2140,7 +2144,7 @@ static int handle_block(demuxer_t *demuxer, struct block_info *block_info)
{
mkv_demuxer_t *mkv_d = (mkv_demuxer_t *) demuxer->priv;
demux_stream_t *ds = NULL;
int i, laces;
int laces;
double current_pts;
bstr data = block_info->data;
bool keyframe = block_info->keyframe;
@ -2200,17 +2204,16 @@ static int handle_block(demuxer_t *demuxer, struct block_info *block_info)
mkv_d->last_pts = current_pts;
mkv_d->last_filepos = demuxer->filepos;
for (i = 0; i < laces; i++) {
for (int i = 0; i < laces; i++) {
bstr block = bstr_splice(data, 0, lace_size[i]);
if (ds == demuxer->video && track->realmedia)
handle_realvideo(demuxer, track, block, keyframe);
else if (ds == demuxer->audio && track->realmedia)
handle_realaudio(demuxer, track, block, keyframe);
else {
demux_packet_t *dp;
bstr buffer = demux_mkv_decode(track, block, 1);
if (buffer.start) {
dp = new_demux_packet(buffer.len);
demux_packet_t *dp = new_demux_packet(buffer.len);
memcpy(dp->buffer, buffer.start, buffer.len);
if (buffer.start != block.start)
talloc_free(buffer.start);