Merge remote-tracking branch 'qatar/master'

* qatar/master:
  mpegaudiodec: Don't use a nonexistent log context for av_dlog
  avformat: Accept the ISO8601 separate format as input, too
  avformat: Interpret times in ff_iso8601_to_unix_time as UTC
  avutil: Add av_timegm as a public function
  cinepak: Add another special case so that it can handle the following file:
  lagarith: add some RGBA decoding support
  lagarith: Add correct line prediction for RGB

Conflicts:
	doc/APIchanges
	libavcodec/cinepak.c
	libavutil/avutil.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>

7 files changed, 95 insertions, 12 deletions

diff --git a/doc/APIchanges b/doc/APIchanges
index 8a2a9de550..03f7d460d2 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -19,6 +19,9 @@ API changes, most recent first:
 2011-10-20 - b35e9e1 - lavu 51.22.0
   Add av_strtok() to avstring.h.
 
+2011-11-xx - xxxxxxx - lavu 51.16.0
+  Add av_timegm()
+
 2011-11-06 - ba04ecf - lavu 51.14.0
   Add av_strcasecmp() and av_strncasecmp() to avstring.h.
 
diff --git a/libavcodec/cinepak.c b/libavcodec/cinepak.c
index 8ada456b81..fe65524870 100644
--- a/libavcodec/cinepak.c
+++ b/libavcodec/cinepak.c
@@ -339,7 +339,7 @@ static int cinepak_decode (CinepakContext *s)
              * by the container file, this data likely comes from a Sega FILM/CPK file.
              * If the frame header is followed by the bytes FE 00 00 06 00 00 then
              * this is probably one of the two known files that have 6 extra bytes
-             * after the frame header. Else, assume 2 extra bytes. The container size
+             * after the frame header. Else, assume 2 extra bytes. The container
              * size also cannot be a multiple of the encoded size. */
             if (s->size >= 16 &&
                 (s->data[10] == 0xFE) &&
diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c
index a632e52b0d..bf845f1ffd 100644
--- a/libavcodec/lagarith.c
+++ b/libavcodec/lagarith.c
@@ -51,6 +51,8 @@ typedef struct LagarithContext {
     DSPContext dsp;
     int zeros;                  /**< number of consecutive zero bytes encountered */
     int zeros_rem;              /**< number of zero bytes remaining to output */
+    uint8_t *rgb_planes;
+    int rgb_stride;
 } LagarithContext;
 
 /**
@@ -245,21 +247,21 @@ static void lag_pred_line(LagarithContext *l, uint8_t *buf,
 {
     int L, TL;
 
+    /* Left pixel is actually prev_row[width] */
+    L = buf[width - stride - 1];
     if (!line) {
         /* Left prediction only for first line */
         L = l->dsp.add_hfyu_left_prediction(buf + 1, buf + 1,
                                             width - 1, buf[0]);
         return;
     } else if (line == 1) {
-        /* Second line, left predict first pixel, the rest of the line is median predicted */
-        /* FIXME: In the case of RGB this pixel is top predicted */
-        TL = buf[-stride];
+        /* Second line, left predict first pixel, the rest of the line is median predicted
+         * NOTE: In the case of RGB this pixel is top predicted */
+        TL = l->avctx->pix_fmt == PIX_FMT_YUV420P ? buf[-stride] : L;
     } else {
         /* Top left is 2 rows back, last pixel */
         TL = buf[width - (2 * stride) - 1];
     }
-    /* Left pixel is actually prev_row[width] */
-    L = buf[width - stride - 1];
 
     add_lag_median_prediction(buf, buf - stride, buf,
                               width, &L, &TL);
@@ -443,6 +445,9 @@ static int lag_decode_frame(AVCodecContext *avctx,
     AVFrame *const p = &l->picture;
     uint8_t frametype = 0;
     uint32_t offset_gu = 0, offset_bv = 0, offset_ry = 9;
+    int offs[4];
+    uint8_t *srcs[4], *dst;
+    int i, j;
 
     AVFrame *picture = data;
 
@@ -458,6 +463,67 @@ static int lag_decode_frame(AVCodecContext *avctx,
     offset_bv = AV_RL32(buf + 5);
 
     switch (frametype) {
+    case FRAME_SOLID_RGBA:
+        avctx->pix_fmt = PIX_FMT_RGB32;
+
+        if (avctx->get_buffer(avctx, p) < 0) {
+            av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+            return -1;
+        }
+
+        dst = p->data[0];
+        for (j = 0; j < avctx->height; j++) {
+            for (i = 0; i < avctx->width; i++)
+                AV_WN32(dst + i * 4, offset_gu);
+            dst += p->linesize[0];
+        }
+        break;
+    case FRAME_ARITH_RGBA:
+        avctx->pix_fmt = PIX_FMT_RGB32;
+
+        if (avctx->get_buffer(avctx, p) < 0) {
+            av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+            return -1;
+        }
+        offs[0] = offset_bv;
+        offs[1] = offset_gu;
+        offs[2] = 13;
+        offs[3] = AV_RL32(buf + 9);
+
+        if (!l->rgb_planes) {
+            l->rgb_stride = FFALIGN(avctx->width, 16);
+            l->rgb_planes = av_malloc(l->rgb_stride * avctx->height * 4);
+            if (!l->rgb_planes) {
+                av_log(avctx, AV_LOG_ERROR, "cannot allocate temporary buffer\n");
+                return AVERROR(ENOMEM);
+            }
+        }
+        for (i = 0; i < 4; i++)
+            srcs[i] = l->rgb_planes + (i + 1) * l->rgb_stride * avctx->height - l->rgb_stride;
+        for (i = 0; i < 4; i++)
+            lag_decode_arith_plane(l, srcs[i],
+                                   avctx->width, avctx->height,
+                                   -l->rgb_stride, buf + offs[i],
+                                   buf_size);
+        dst = p->data[0];
+        for (i = 0; i < 4; i++)
+            srcs[i] = l->rgb_planes + i * l->rgb_stride * avctx->height;
+        for (j = 0; j < avctx->height; j++) {
+            for (i = 0; i < avctx->width; i++) {
+                uint8_t r, g, b, a;
+                r = srcs[0][i];
+                g = srcs[1][i];
+                b = srcs[2][i];
+                a = srcs[3][i];
+                r += g;
+                b += g;
+                AV_WN32(dst + i * 4, MKBETAG(a, r, g, b));
+            }
+            dst += p->linesize[0];
+            for (i = 0; i < 4; i++)
+                srcs[i] += l->rgb_stride;
+        }
+        break;
     case FRAME_ARITH_YV12:
         avctx->pix_fmt = PIX_FMT_YUV420P;
 
@@ -504,6 +570,7 @@ static av_cold int lag_decode_end(AVCodecContext *avctx)
 
     if (l->picture.data[0])
         avctx->release_buffer(avctx, &l->picture);
+    av_freep(&l->rgb_planes);
 
     return 0;
 }
diff --git a/libavformat/utils.c b/libavformat/utils.c
index ab063fa796..1906b27536 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -33,6 +33,7 @@
 #include "id3v2.h"
 #include "libavutil/avstring.h"
 #include "libavutil/mathematics.h"
+#include "libavutil/parseutils.h"
 #include "riff.h"
 #include "audiointerleave.h"
 #include "url.h"
@@ -4161,9 +4162,14 @@ void ff_make_absolute_url(char *buf, int size, const char *base,
 int64_t ff_iso8601_to_unix_time(const char *datestr)
 {
 #if HAVE_STRPTIME
-    struct tm time = {0};
-    strptime(datestr, "%Y - %m - %dT%T", &time);
-    return mktime(&time);
+    struct tm time1 = {0}, time2 = {0};
+    char *ret1, *ret2;
+    ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
+    ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
+    if (ret2 && !ret1)
+        return av_timegm(&time2);
+    else
+        return av_timegm(&time1);
 #else
     av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
                                  "the date string.\n");
diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index 72cfb8a3c0..0fa46b8230 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -40,7 +40,7 @@
 #define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
 
 #define LIBAVUTIL_VERSION_MAJOR 51
-#define LIBAVUTIL_VERSION_MINOR 25
+#define LIBAVUTIL_VERSION_MINOR 26
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
diff --git a/libavutil/parseutils.c b/libavutil/parseutils.c
index bf79921b7b..2649e3b2bc 100644
--- a/libavutil/parseutils.c
+++ b/libavutil/parseutils.c
@@ -471,7 +471,7 @@ static const char *small_strptime(const char *p, const char *fmt, struct tm *dt)
     }
 }
 
-static time_t mktimegm(struct tm *tm)
+time_t av_timegm(struct tm *tm)
 {
     time_t t;
 
@@ -592,7 +592,7 @@ int av_parse_time(int64_t *timeval, const char *timestr, int duration)
     } else {
         dt.tm_isdst = -1;       /* unknown */
         if (is_utc) {
-            t = mktimegm(&dt);
+            t = av_timegm(&dt);
         } else {
             t = mktime(&dt);
         }
diff --git a/libavutil/parseutils.h b/libavutil/parseutils.h
index dfaec5eb9b..353e9a710e 100644
--- a/libavutil/parseutils.h
+++ b/libavutil/parseutils.h
@@ -19,6 +19,8 @@
 #ifndef AVUTIL_PARSEUTILS_H
 #define AVUTIL_PARSEUTILS_H
 
+#include <time.h>
+
 #include "rational.h"
 
 /**
@@ -114,4 +116,9 @@ int av_parse_time(int64_t *timeval, const char *timestr, int duration);
  */
 int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
 
+/**
+ * Convert the decomposed UTC time in tm to a time_t value.
+ */
+time_t av_timegm(struct tm *tm);
+
 #endif /* AVUTIL_PARSEUTILS_H */