avcodec/dump_extradata_bsf: don't allocate a new AVPacket per filtered packet
[ffmpeg.git] / libavcodec / flvdec.c
index 774fde7..f9beb40 100644 (file)
@@ -1,5 +1,6 @@
 /*
  * FLV decoding.
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include "mpegvideo.h"
-#include "h263.h"
-#include "flv.h"
 #include "libavutil/imgutils.h"
 
-void ff_flv2_decode_ac_esc(GetBitContext *gb, int *level, int *run, int *last){
-    int is11 = get_bits1(gb);
-    *last = get_bits1(gb);
-    *run = get_bits(gb, 6);
-    if(is11){
-        *level = get_sbits(gb, 11);
-    } else {
-        *level = get_sbits(gb, 7);
-    }
-}
+#include "flv.h"
+#include "h263.h"
+#include "mpegvideo.h"
+#include "mpegvideodata.h"
 
 int ff_flv_decode_picture_header(MpegEncContext *s)
 {
@@ -47,87 +39,92 @@ int ff_flv_decode_picture_header(MpegEncContext *s)
         av_log(s->avctx, AV_LOG_ERROR, "Bad picture format\n");
         return AVERROR_INVALIDDATA;
     }
-    s->h263_flv = format+1;
+    s->h263_flv       = format + 1;
     s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */
-    format = get_bits(&s->gb, 3);
+    format            = get_bits(&s->gb, 3);
     switch (format) {
     case 0:
-        width = get_bits(&s->gb, 8);
+        width  = get_bits(&s->gb, 8);
         height = get_bits(&s->gb, 8);
         break;
     case 1:
-        width = get_bits(&s->gb, 16);
+        width  = get_bits(&s->gb, 16);
         height = get_bits(&s->gb, 16);
         break;
     case 2:
-        width = 352;
+        width  = 352;
         height = 288;
         break;
     case 3:
-        width = 176;
+        width  = 176;
         height = 144;
         break;
     case 4:
-        width = 128;
+        width  = 128;
         height = 96;
         break;
     case 5:
-        width = 320;
+        width  = 320;
         height = 240;
         break;
     case 6:
-        width = 160;
+        width  = 160;
         height = 120;
         break;
     default:
         width = height = 0;
         break;
     }
-    if(av_image_check_size(width, height, 0, s->avctx))
+    if (av_image_check_size(width, height, 0, s->avctx))
         return AVERROR(EINVAL);
-    s->width = width;
+    s->width  = width;
     s->height = height;
 
     s->pict_type = AV_PICTURE_TYPE_I + get_bits(&s->gb, 2);
-    s->dropable= s->pict_type > AV_PICTURE_TYPE_P;
-    if (s->dropable)
+    s->droppable = s->pict_type > AV_PICTURE_TYPE_P;
+    if (s->droppable)
         s->pict_type = AV_PICTURE_TYPE_P;
 
     skip_bits1(&s->gb); /* deblocking flag */
-    s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
+    s->chroma_qscale = s->qscale = get_bits(&s->gb, 5);
 
     s->h263_plus = 0;
 
-    s->unrestricted_mv = 1;
+    s->unrestricted_mv   = 1;
     s->h263_long_vectors = 0;
 
     /* PEI */
-    while (get_bits1(&s->gb) != 0) {
-        skip_bits(&s->gb, 8);
-    }
+    if (skip_1stop_8data_bits(&s->gb) < 0)
+        return AVERROR_INVALIDDATA;
+
     s->f_code = 1;
 
-    if(s->avctx->debug & FF_DEBUG_PICT_INFO){
+    if (s->ehc_mode)
+        s->avctx->sample_aspect_ratio= (AVRational){1,2};
+
+    if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
         av_log(s->avctx, AV_LOG_DEBUG, "%c esc_type:%d, qp:%d num:%d\n",
-               s->dropable ? 'D' : av_get_picture_type_char(s->pict_type), s->h263_flv-1, s->qscale, s->picture_number);
+               s->droppable ? 'D' : av_get_picture_type_char(s->pict_type),
+               s->h263_flv - 1, s->qscale, s->picture_number);
     }
 
-    s->y_dc_scale_table=
-    s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
+    s->y_dc_scale_table = s->c_dc_scale_table = ff_mpeg1_dc_scale_table;
 
     return 0;
 }
 
 AVCodec ff_flv_decoder = {
     .name           = "flv",
+    .long_name      = NULL_IF_CONFIG_SMALL("FLV / Sorenson Spark / Sorenson H.263 (Flash Video)"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_FLV1,
     .priv_data_size = sizeof(MpegEncContext),
     .init           = ff_h263_decode_init,
     .close          = ff_h263_decode_end,
     .decode         = ff_h263_decode_frame,
-    .capabilities   = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
+    .capabilities   = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
     .max_lowres     = 3,
-    .long_name      = NULL_IF_CONFIG_SMALL("FLV / Sorenson Spark / Sorenson H.263 (Flash Video)"),
-    .pix_fmts       = ff_pixfmt_list_420,
+    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
+                                                     AV_PIX_FMT_NONE },
 };