Merge remote-tracking branch 'qatar/master'

* qatar/master:
  rtpdec_jpeg: Add support for default quantizers
  x86: dsputil: Move specific optimization settings out of global init function
  avplay: get rid of ugly casts in the options table
  avplay: fix prototypes for option callbacks.
  flvdec: always set AVFMTCTX_NOHEADER.
  file: Use a normal private context for storing the file descriptor
  configure: Adjust the xgetbv instrinsic check
  configure: Add --disable-inline-asm command line option
  configure: Don't try to enable the log2 function on msvcrt

Conflicts:
	configure
	ffplay.c
	libavcodec/x86/dsputil_mmx.c
	libavformat/file.c
	libavformat/flvdec.c

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

3 files changed, 71 insertions, 16 deletions

diff --git a/libavformat/file.c b/libavformat/file.c
index 288275f6ef..906ecddd42 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -44,23 +44,28 @@
 
 /* standard file protocol */
 
+typedef struct FileContext {
+    int fd;
+} FileContext;
+
 static int file_read(URLContext *h, unsigned char *buf, int size)
 {
-    int fd = (intptr_t) h->priv_data;
-    int r = read(fd, buf, size);
+    FileContext *c = h->priv_data;
+    int r = read(c->fd, buf, size);
     return (-1 == r)?AVERROR(errno):r;
 }
 
 static int file_write(URLContext *h, const unsigned char *buf, int size)
 {
-    int fd = (intptr_t) h->priv_data;
-    int r = write(fd, buf, size);
+    FileContext *c = h->priv_data;
+    int r = write(c->fd, buf, size);
     return (-1 == r)?AVERROR(errno):r;
 }
 
 static int file_get_handle(URLContext *h)
 {
-    return (intptr_t) h->priv_data;
+    FileContext *c = h->priv_data;
+    return c->fd;
 }
 
 static int file_check(URLContext *h, int mask)
@@ -80,6 +85,7 @@ static int file_check(URLContext *h, int mask)
 
 static int file_open(URLContext *h, const char *filename, int flags)
 {
+    FileContext *c = h->priv_data;
     int access;
     int fd;
     struct stat st;
@@ -99,7 +105,7 @@ static int file_open(URLContext *h, const char *filename, int flags)
     fd = open(filename, access, 0666);
     if (fd == -1)
         return AVERROR(errno);
-    h->priv_data = (void *) (intptr_t) fd;
+    c->fd = fd;
 
     h->is_streamed = !fstat(fd, &st) && S_ISFIFO(st.st_mode);
 
@@ -109,19 +115,19 @@ static int file_open(URLContext *h, const char *filename, int flags)
 /* XXX: use llseek */
 static int64_t file_seek(URLContext *h, int64_t pos, int whence)
 {
-    int fd = (intptr_t) h->priv_data;
+    FileContext *c = h->priv_data;
     if (whence == AVSEEK_SIZE) {
         struct stat st;
-        int ret = fstat(fd, &st);
+        int ret = fstat(c->fd, &st);
         return ret < 0 ? AVERROR(errno) : (S_ISFIFO(st.st_mode) ? 0 : st.st_size);
     }
-    return lseek(fd, pos, whence);
+    return lseek(c->fd, pos, whence);
 }
 
 static int file_close(URLContext *h)
 {
-    int fd = (intptr_t) h->priv_data;
-    return close(fd);
+    FileContext *c = h->priv_data;
+    return close(c->fd);
 }
 
 URLProtocol ff_file_protocol = {
@@ -133,6 +139,7 @@ URLProtocol ff_file_protocol = {
     .url_close           = file_close,
     .url_get_file_handle = file_get_handle,
     .url_check           = file_check,
+    .priv_data_size      = sizeof(FileContext),
 };
 
 #endif /* CONFIG_FILE_PROTOCOL */
@@ -141,6 +148,7 @@ URLProtocol ff_file_protocol = {
 
 static int pipe_open(URLContext *h, const char *filename, int flags)
 {
+    FileContext *c = h->priv_data;
     int fd;
     char *final;
     av_strstart(filename, "pipe:", &filename);
@@ -156,7 +164,7 @@ static int pipe_open(URLContext *h, const char *filename, int flags)
 #if HAVE_SETMODE
     setmode(fd, O_BINARY);
 #endif
-    h->priv_data = (void *) (intptr_t) fd;
+    c->fd = fd;
     h->is_streamed = 1;
     return 0;
 }
@@ -168,6 +176,7 @@ URLProtocol ff_pipe_protocol = {
     .url_write           = file_write,
     .url_get_file_handle = file_get_handle,
     .url_check           = file_check,
+    .priv_data_size      = sizeof(FileContext),
 };
 
 #endif /* CONFIG_PIPE_PROTOCOL */
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 48750473b2..8c6807a260 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -503,7 +503,8 @@ static int flv_read_header(AVFormatContext *s)
         flags = FLV_HEADER_FLAG_HASVIDEO | FLV_HEADER_FLAG_HASAUDIO;
         av_log(s, AV_LOG_WARNING, "Broken FLV file, which says no streams present, this might fail\n");
     }
-        s->ctx_flags |= AVFMTCTX_NOHEADER;
+
+    s->ctx_flags |= AVFMTCTX_NOHEADER;
 
     if(flags & FLV_HEADER_FLAG_HASVIDEO){
         if(!create_stream(s, AVMEDIA_TYPE_VIDEO))
@@ -729,6 +730,7 @@ static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
         av_log(s, AV_LOG_WARNING, "Stream discovered after head already parsed\n");
         st = create_stream(s,
              (int[]){AVMEDIA_TYPE_VIDEO, AVMEDIA_TYPE_AUDIO, AVMEDIA_TYPE_DATA}[stream_type]);
+
     }
     av_dlog(s, "%d %X %d \n", stream_type, flags, st->discard);
     if(  (st->discard >= AVDISCARD_NONKEY && !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || (stream_type == FLV_STREAM_TYPE_AUDIO)))
diff --git a/libavformat/rtpdec_jpeg.c b/libavformat/rtpdec_jpeg.c
index 0670221547..1d3441c5ad 100644
--- a/libavformat/rtpdec_jpeg.c
+++ b/libavformat/rtpdec_jpeg.c
@@ -33,6 +33,28 @@ struct PayloadContext {
     int         hdr_size;       ///< size of the current frame header
 };
 
+static const uint8_t default_quantizers[128] = {
+    /* luma table */
+    16,  11,  12,  14,  12,  10,  16,  14,
+    13,  14,  18,  17,  16,  19,  24,  40,
+    26,  24,  22,  22,  24,  49,  35,  37,
+    29,  40,  58,  51,  61,  60,  57,  51,
+    56,  55,  64,  72,  92,  78,  64,  68,
+    87,  69,  55,  56,  80,  109, 81,  87,
+    95,  98,  103, 104, 103, 62,  77,  113,
+    121, 112, 100, 120, 92,  101, 103, 99,
+
+    /* chroma table */
+    17,  18,  18,  24,  21,  24,  47,  26,
+    26,  47,  99,  66,  56,  66,  99,  99,
+    99,  99,  99,  99,  99,  99,  99,  99,
+    99,  99,  99,  99,  99,  99,  99,  99,
+    99,  99,  99,  99,  99,  99,  99,  99,
+    99,  99,  99,  99,  99,  99,  99,  99,
+    99,  99,  99,  99,  99,  99,  99,  99,
+    99,  99,  99,  99,  99,  99,  99,  99
+};
+
 static PayloadContext *jpeg_new_context(void)
 {
     return av_mallocz(sizeof(PayloadContext));
@@ -170,6 +192,27 @@ static int jpeg_create_header(uint8_t *buf, int size, uint32_t type, uint32_t w,
     return put_bits_count(&pbc) / 8;
 }
 
+static void create_default_qtables(uint8_t *qtables, uint8_t q)
+{
+    int factor = q;
+    int i;
+
+    factor = av_clip(q, 1, 99);
+
+    if (q < 50)
+        q = 5000 / factor;
+    else
+        q = 200 - factor * 2;
+
+    for (i = 0; i < 128; i++) {
+        int val = (default_quantizers[i] * q + 50) / 100;
+
+        /* Limit the quantizers to 1 <= q <= 255. */
+        val = av_clip(val, 1, 255);
+        qtables[i] = val;
+    }
+}
+
 static int jpeg_parse_packet(AVFormatContext *ctx, PayloadContext *jpeg,
                              AVStream *st, AVPacket *pkt, uint32_t *timestamp,
                              const uint8_t *buf, int len, int flags)
@@ -238,6 +281,7 @@ static int jpeg_parse_packet(AVFormatContext *ctx, PayloadContext *jpeg,
 
     if (off == 0) {
         /* Start of JPEG data packet. */
+        uint8_t new_qtables[128];
         uint8_t hdr[1024];
 
         /* Skip the current frame in case of the end packet
@@ -249,9 +293,9 @@ static int jpeg_parse_packet(AVFormatContext *ctx, PayloadContext *jpeg,
         jpeg->timestamp = *timestamp;
 
         if (!qtables) {
-            av_log(ctx, AV_LOG_ERROR,
-                   "Unimplemented default quantization tables.\n");
-            return AVERROR_PATCHWELCOME;
+            create_default_qtables(new_qtables, q);
+            qtables    = new_qtables;
+            qtable_len = sizeof(new_qtables);
         }
 
         /* Generate a frame and scan headers that can be prepended to the