closed gop support & flags2 as all bits in flags are used

and a few minor things i forgot to commit ...

Originally committed as revision 2718 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffmpeg.c

@@ -105,6 +105,8 @@ static float video_b_qfactor = 1.25;
 static float video_b_qoffset = 1.25;
 static float video_i_qfactor = -0.8;
 static float video_i_qoffset = 0.0;
+static int video_intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
+static int video_inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
 static int me_method = ME_EPZS;
 static int video_disable = 0;
 static int video_codec_id = CODEC_ID_NONE;
@@ -123,6 +125,7 @@ static int use_umv = 0;
 static int use_alt_scan = 0;
 static int use_trell = 0;
 static int use_scan_offset = 0;
+static int closed_gop = 0;
 static int do_deinterlace = 0;
 static int do_interlace_dct = 0;
 static int do_interlace_me = 0;
@@ -137,6 +140,7 @@ static int error_rate = 0;
 static int strict = 0;
 static int top_field_first = -1;
 static int noise_reduction = 0;
+static int sc_threshold = 0;
 static int debug = 0;
 static int debug_mv = 0;
 extern int loop_input; /* currently a hack */
@@ -1458,6 +1462,7 @@ static int av_encode(AVFormatContext **output_files,
             file_table[file_index].eof_reached = 1;
             continue;
         }
+
         if (!pkt.size) {
             stream_no_data = is;
         } else {
@@ -1948,6 +1953,15 @@ static void opt_i_qoffset(const char *arg)
     video_i_qoffset = atof(arg);
 }
 
+static void opt_ibias(const char *arg)
+{
+    video_intra_quant_bias = atoi(arg);
+}
+static void opt_pbias(const char *arg)
+{
+    video_inter_quant_bias = atoi(arg);
+}
+
 static void opt_packet_size(const char *arg)
 {
     packet_size= atoi(arg);
@@ -1973,6 +1987,11 @@ static void opt_noise_reduction(const char *arg)
     noise_reduction= atoi(arg);
 }
 
+static void opt_sc_threshold(const char *arg)
+{
+    sc_threshold= atoi(arg);
+}
+
 static void opt_audio_bitrate(const char *arg)
 {
     audio_bit_rate = atoi(arg) * 1000;
@@ -2410,6 +2429,9 @@ static void opt_output_file(const char *filename)
            	if (use_scan_offset) {
                     video_enc->flags |= CODEC_FLAG_SVCD_SCAN_OFFSET;
                 }
+           	if (closed_gop) {
+                    video_enc->flags |= CODEC_FLAG_CLOSED_GOP;
+                }
                 if (b_frames) {
                     video_enc->max_b_frames = b_frames;
                     video_enc->b_frame_strategy = 0;
@@ -2466,11 +2488,14 @@ static void opt_output_file(const char *filename)
                 video_enc->b_quant_factor = video_b_qfactor;
                 video_enc->i_quant_offset = video_i_qoffset;
                 video_enc->b_quant_offset = video_b_qoffset;
+                video_enc->intra_quant_bias = video_intra_quant_bias;
+                video_enc->inter_quant_bias = video_inter_quant_bias;
                 video_enc->dct_algo = dct_algo;
                 video_enc->idct_algo = idct_algo;
                 video_enc->strict_std_compliance = strict;
                 video_enc->error_rate = error_rate;
                 video_enc->noise_reduction= noise_reduction;
+                video_enc->scenechange_threshold= sc_threshold;
                 if(packet_size){
                     video_enc->rtp_mode= 1;
                     video_enc->rtp_payload_size= packet_size;
@@ -3001,6 +3026,8 @@ const OptionDef options[] = {
     { "i_qfactor", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_i_qfactor}, "qp factor between p and i frames", "factor" },
     { "b_qoffset", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_b_qoffset}, "qp offset between p and b frames", "offset" },
     { "i_qoffset", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_i_qoffset}, "qp offset between p and i frames", "offset" },
+    { "ibias", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_ibias}, "intra quant bias", "bias" },
+    { "pbias", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_pbias}, "inter quant bias", "bias" },
 //    { "b_strategy", HAS_ARG | OPT_EXPERT, {(void*)opt_b_strategy}, "dynamic b frame selection strategy", "strategy" },
     { "rc_eq", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_eq}, "set rate control equation", "equation" },
     { "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_override_string}, "rate control override for specific intervals", "override" },
@@ -3047,11 +3074,13 @@ const OptionDef options[] = {
     { "umv", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_umv}, "enable Unlimited Motion Vector (h263+)" },
     { "alt", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_alt_scan}, "enable alternate scantable (mpeg2)" },
     { "trell", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_trell}, "enable trellis quantization" },
+    { "cgop", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&closed_gop}, "closed gop" },
     { "scan_offset", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&use_scan_offset}, "enable SVCD Scan Offset placeholder" },
     { "intra_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_intra_matrix}, "specify intra matrix coeffs", "matrix" },
     { "inter_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_inter_matrix}, "specify inter matrix coeffs", "matrix" },
     { "top", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_top_field_first}, "top=1/bottom=0/auto=-1 field first", "" },
     { "nr", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_noise_reduction}, "noise reduction", "" },
+    { "sc_threshold", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_sc_threshold}, "scene change threshold", "threshold" },
 
     /* audio options */
     { "ab", HAS_ARG | OPT_AUDIO, {(void*)opt_audio_bitrate}, "set audio bitrate (in kbit/s)", "bitrate", },

libavcodec/avcodec.h

@@ -270,6 +270,7 @@ static const __attribute__((unused)) int Motion_Est_QTab[] =
 #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000
 #define CODEC_FLAG_INTERLACED_ME  0x20000000 ///< interlaced motion estimation
 #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< will reserve space for SVCD scan offset user data
+#define CODEC_FLAG_CLOSED_GOP     0x80000000
 /* Unsupported options :
  * 		Syntax Arithmetic coding (SAC)
  * 		Reference Picture Selection

libavcodec/h263dec.c

@@ -393,6 +393,7 @@ uint64_t time= rdtsc();
     printf("bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
 #endif
     s->flags= avctx->flags;
+    s->flags2= avctx->flags2;
 
     *data_size = 0;
 

libavcodec/h264.c

@@ -4131,6 +4131,7 @@ static int decode_frame(AVCodecContext *avctx,
     int buf_index;
     
     s->flags= avctx->flags;
+    s->flags2= avctx->flags2;
 
     *data_size = 0;
    

libavcodec/mjpeg.c

@@ -855,7 +855,6 @@ static int mjpeg_decode_init(AVCodecContext *avctx)
 
     /* ugly way to get the idct & scantable FIXME */
     memset(&s2, 0, sizeof(MpegEncContext));
-    s2.flags= avctx->flags;
     s2.avctx= avctx;
 //    s2->out_format = FMT_MJPEG;
     s2.width = 8;

libavcodec/mpeg12.c

@@ -330,7 +330,7 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
             put_bits(&s->pb, 1, 1);
             put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
             put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
-            put_bits(&s->pb, 1, 0); /* closed gop */
+            put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP));
             put_bits(&s->pb, 1, 0); /* broken link */
         }
 }
@@ -1706,6 +1706,7 @@ static int mpeg_decode_init(AVCodecContext *avctx)
     
     s->mpeg_enc_ctx.avctx= avctx;
     s->mpeg_enc_ctx.flags= avctx->flags;
+    s->mpeg_enc_ctx.flags2= avctx->flags2;
     common_init(&s->mpeg_enc_ctx);
     init_vlcs();
 

libavcodec/mpegvideo.c

@@ -408,6 +408,7 @@ int MPV_common_init(MpegEncContext *s)
     DCT_common_init(s);
 
     s->flags= s->avctx->flags;
+    s->flags2= s->avctx->flags2;
 
     s->mb_width  = (s->width  + 15) / 16;
     s->mb_height = (s->height + 15) / 16;
@@ -700,6 +701,7 @@ int MPV_encode_init(AVCodecContext *avctx)
     s->gop_size = avctx->gop_size;
     s->avctx = avctx;
     s->flags= avctx->flags;
+    s->flags2= avctx->flags2;
     s->max_b_frames= avctx->max_b_frames;
     s->codec_id= avctx->codec->id;
     s->luma_elim_threshold  = avctx->luma_elim_threshold;
@@ -789,6 +791,11 @@ int MPV_encode_init(AVCodecContext *avctx)
         return -1;
     }
     
+    if(s->avctx->scenechange_threshold < 1000000000 && (s->flags & CODEC_FLAG_CLOSED_GOP)){
+        av_log(avctx, AV_LOG_ERROR, "closed gop with scene change detection arent supported yet\n");
+        return -1;
+    }
+    
     if(s->codec_id==CODEC_ID_MJPEG){
         s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
         s->inter_quant_bias= 0;
@@ -1809,12 +1816,19 @@ static void select_input_picture(MpegEncContext *s){
 //static int b_count=0;
 //b_count+= b_frames;
 //av_log(s->avctx, AV_LOG_DEBUG, "b_frames: %d\n", b_count);
-                        
+            if(s->picture_in_gop_number + b_frames >= s->gop_size){
+                if(s->flags & CODEC_FLAG_CLOSED_GOP)
+                    b_frames=0;
+                s->input_picture[b_frames]->pict_type= I_TYPE;
+            }
+            
+            if(   (s->flags & CODEC_FLAG_CLOSED_GOP)
+               && b_frames
+               && s->input_picture[b_frames]->pict_type== I_TYPE)
+                b_frames--;
+
             s->reordered_input_picture[0]= s->input_picture[b_frames];
-            if(   s->picture_in_gop_number + b_frames >= s->gop_size 
+            if(s->reordered_input_picture[0]->pict_type != I_TYPE)
-               || s->reordered_input_picture[0]->pict_type== I_TYPE)
-                s->reordered_input_picture[0]->pict_type= I_TYPE;
-            else
                 s->reordered_input_picture[0]->pict_type= P_TYPE;
             s->reordered_input_picture[0]->coded_picture_number= s->coded_picture_number++;
             for(i=0; i<b_frames; i++){

libavcodec/mpegvideo.h

@@ -255,6 +255,7 @@ typedef struct MpegEncContext {
     int fixed_qscale; ///< fixed qscale if non zero 
     int encoding;     ///< true if we are encoding (vs decoding) 
     int flags;        ///< AVCodecContext.flags (HQ, MV4, ...) 
+    int flags2;       ///< AVCodecContext.flags2
     int max_b_frames; ///< max number of b-frames for encoding 
     int luma_elim_threshold;
     int chroma_elim_threshold;
@@ -469,7 +470,6 @@ typedef struct MpegEncContext {
     void *opaque;              ///< private data for the user
 
     /* bit rate control */
-    int I_frame_bits; //FIXME used in mpeg12 ...
     int64_t wanted_bits;
     int64_t total_bits;
     int frame_bits;                ///< bits used for the current frame 
@@ -619,7 +619,6 @@ typedef struct MpegEncContext {
     GetBitContext gb;
 
     /* Mpeg1 specific */
-    int fake_picture_number; ///< picture number at the bitstream frame rate 
     int gop_picture_number;  ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific 
     int last_mv_dir;         ///< last mv_dir, used for b frame encoding 
     int broken_link;         ///< no_output_of_prior_pics_flag

libavcodec/rv10.c

@@ -474,8 +474,6 @@ static int rv10_decode_init(AVCodecContext *avctx)
         av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id);
     }
 //printf("ver:%X\n", avctx->sub_id);
-    s->flags= avctx->flags;
-
     if (MPV_common_init(s) < 0)
         return -1;
 

libavcodec/svq1.c

@@ -789,7 +789,6 @@ static int svq1_decode_init(AVCodecContext *avctx)
     s->codec_id= avctx->codec->id;
     avctx->pix_fmt = PIX_FMT_YUV410P;
     avctx->has_b_frames= 1; // not true, but DP frames and these behave like unidirectional b frames
-    s->flags= avctx->flags;
     if (MPV_common_init(s) < 0) return -1;
 
     init_vlc(&svq1_block_type, 2, 4,

libavcodec/svq3.c

@@ -697,8 +697,10 @@ static int svq3_decode_slice_header (H264Context *h) {
 
     h->next_slice_index = s->gb.index + 8*show_bits (&s->gb, 8*length) + 8*length;
 
-    if (h->next_slice_index > s->gb.size_in_bits)
+    if (h->next_slice_index > s->gb.size_in_bits){
+      av_log(h->s.avctx, AV_LOG_ERROR, "slice after bitstream end\n");
       return -1;
+    }
 
     s->gb.size_in_bits = h->next_slice_index - 8*(length - 1);
     s->gb.index += 8;
@@ -709,8 +711,10 @@ static int svq3_decode_slice_header (H264Context *h) {
     }
   }
 
-  if ((i = svq3_get_ue_golomb (&s->gb)) == INVALID_VLC || i >= 3)
+  if ((i = svq3_get_ue_golomb (&s->gb)) == INVALID_VLC || i >= 3){
+    av_log(h->s.avctx, AV_LOG_ERROR, "illegal slice type %d \n", i);
     return -1;
+  }
 
   h->slice_type = golomb_to_pict_type[i];
 
@@ -766,6 +770,7 @@ static int svq3_decode_frame (AVCodecContext *avctx,
   *data_size = 0;
 
   s->flags = avctx->flags;
+  s->flags2 = avctx->flags2;
   s->unrestricted_mv = 1;
 
   if (!s->context_initialized) {