]> git.sesse.net Git - vlc/blobdiff - modules/codec/avcodec/encoder.c
avcodec: disable frame multithreading with dxva2
[vlc] / modules / codec / avcodec / encoder.c
index 930636e5dda15fae634faea73a916124014a417e..3704e0f8891b3ab9db720176614ade0defc3015c 100644 (file)
@@ -32,6 +32,8 @@
 # include "config.h"
 #endif
 
+#include <math.h>
+
 #include <vlc_common.h>
 #include <vlc_aout.h>
 #include <vlc_sout.h>
 #include <vlc_avcodec.h>
 #include <vlc_cpu.h>
 
-#define HAVE_MMX 1
 #include <libavcodec/avcodec.h>
+#include <libavutil/audioconvert.h>
 
 #include "avcodec.h"
 #include "avcommon.h"
 
+#if LIBAVUTIL_VERSION_CHECK( 52,2,6,0,0 )
+# include <libavutil/channel_layout.h>
+#endif
+
 #define HURRY_UP_GUARD1 (450000)
 #define HURRY_UP_GUARD2 (300000)
 #define HURRY_UP_GUARD3 (100000)
@@ -98,6 +104,7 @@ struct encoder_sys_t
      */
     uint8_t *p_buffer;
     size_t i_buffer_out;
+    uint8_t *p_interleave_buf;
 
     /*
      * Video properties
@@ -110,10 +117,17 @@ struct encoder_sys_t
     /*
      * Audio properties
      */
-    int i_sample_bytes;
-    int i_frame_size;
-    int i_samples_delay;
+    size_t i_sample_bytes;
+    size_t i_frame_size;
+    size_t i_samples_delay; //How much samples in delay buffer
+    bool b_planar;
+    bool b_variable;    //Encoder can be fed with any size frames not just frame_size
     mtime_t i_pts;
+    date_t  buffer_date;
+
+    /* Multichannel (>2) channel reordering */
+    uint8_t    i_channels_to_reorder;
+    uint8_t    pi_reorder_layout[AOUT_CHAN_MAX];
 
     /* Encoding settings */
     int        i_key_int;
@@ -141,6 +155,45 @@ struct encoder_sys_t
     AVFrame    *frame;
 };
 
+
+/* Taken from audio.c*/
+static const uint64_t pi_channels_map[][2] =
+{
+    { AV_CH_FRONT_LEFT,        AOUT_CHAN_LEFT },
+    { AV_CH_FRONT_RIGHT,       AOUT_CHAN_RIGHT },
+    { AV_CH_FRONT_CENTER,      AOUT_CHAN_CENTER },
+    { AV_CH_LOW_FREQUENCY,     AOUT_CHAN_LFE },
+    { AV_CH_BACK_LEFT,         AOUT_CHAN_REARLEFT },
+    { AV_CH_BACK_RIGHT,        AOUT_CHAN_REARRIGHT },
+    { AV_CH_FRONT_LEFT_OF_CENTER, 0 },
+    { AV_CH_FRONT_RIGHT_OF_CENTER, 0 },
+    { AV_CH_BACK_CENTER,       AOUT_CHAN_REARCENTER },
+    { AV_CH_SIDE_LEFT,         AOUT_CHAN_MIDDLELEFT },
+    { AV_CH_SIDE_RIGHT,        AOUT_CHAN_MIDDLERIGHT },
+    { AV_CH_TOP_CENTER,        0 },
+    { AV_CH_TOP_FRONT_LEFT,    0 },
+    { AV_CH_TOP_FRONT_CENTER,  0 },
+    { AV_CH_TOP_FRONT_RIGHT,   0 },
+    { AV_CH_TOP_BACK_LEFT,     0 },
+    { AV_CH_TOP_BACK_CENTER,   0 },
+    { AV_CH_TOP_BACK_RIGHT,    0 },
+    { AV_CH_STEREO_LEFT,       0 },
+    { AV_CH_STEREO_RIGHT,      0 },
+};
+
+static const uint32_t channel_mask[][2] = {
+    {0,0},
+    {AOUT_CHAN_CENTER, AV_CH_LAYOUT_MONO},
+    {AOUT_CHANS_STEREO, AV_CH_LAYOUT_STEREO},
+    {AOUT_CHANS_2_1, AV_CH_LAYOUT_2POINT1},
+    {AOUT_CHANS_4_0, AV_CH_LAYOUT_4POINT0},
+    {AOUT_CHANS_4_1, AV_CH_LAYOUT_4POINT1},
+    {AOUT_CHANS_5_1, AV_CH_LAYOUT_5POINT1_BACK},
+    {AOUT_CHANS_7_0, AV_CH_LAYOUT_7POINT0},
+    {AOUT_CHANS_7_1, AV_CH_LAYOUT_7POINT1},
+    {AOUT_CHANS_8_1, AV_CH_LAYOUT_OCTAGONAL},
+};
+
 static const char *const ppsz_enc_options[] = {
     "keyint", "bframes", "vt", "qmin", "qmax", "codec", "hq",
     "rc-buffer-size", "rc-buffer-aggressivity", "pre-me", "hurry-up",
@@ -150,7 +203,7 @@ static const char *const ppsz_enc_options[] = {
 #if (LIBAVCODEC_VERSION_MAJOR < 55)
     "luma-elim-threshold", "chroma-elim-threshold",
 #endif
-    "aac-profile",
+    "aac-profile", "options",
     NULL
 };
 
@@ -185,6 +238,9 @@ static const uint16_t mpeg4_default_non_intra_matrix[64] = {
  23, 24, 25, 27, 28, 30, 31, 33,
 };
 
+static const int DEFAULT_ALIGN = 0;
+
+
 /*****************************************************************************
  * OpenEncoder: probe the encoder
  *****************************************************************************/
@@ -195,29 +251,18 @@ int OpenEncoder( vlc_object_t *p_this )
     encoder_sys_t *p_sys;
     AVCodecContext *p_context;
     AVCodec *p_codec = NULL;
-    int i_codec_id, i_cat;
+    unsigned i_codec_id;
+    int i_cat;
     const char *psz_namecodec;
     float f_val;
     char *psz_val;
 
     /* Initialization must be done before avcodec_find_encoder() */
-    vlc_init_avcodec();
+    vlc_init_avcodec(p_this);
 
     config_ChainParse( p_enc, ENC_CFG_PREFIX, ppsz_enc_options, p_enc->p_cfg );
 
-    if( p_enc->fmt_out.i_codec == VLC_CODEC_MP3 )
-    {
-        i_cat = AUDIO_ES;
-        i_codec_id = AV_CODEC_ID_MP3;
-        psz_namecodec = "MPEG I/II Layer 3";
-    }
-    else if( p_enc->fmt_out.i_codec == VLC_CODEC_MP2 )
-    {
-        i_cat = AUDIO_ES;
-        i_codec_id = AV_CODEC_ID_MP2;
-        psz_namecodec = "MPEG I/II Layer 2";
-    }
-    else if( p_enc->fmt_out.i_codec == VLC_CODEC_MP1V )
+    if( p_enc->fmt_out.i_codec == VLC_CODEC_MP1V )
     {
         i_cat = VIDEO_ES;
         i_codec_id = AV_CODEC_ID_MPEG1VIDEO;
@@ -300,23 +345,19 @@ int OpenEncoder( vlc_object_t *p_this )
     p_enc->p_sys = p_sys;
     p_sys->i_samples_delay = 0;
     p_sys->p_codec = p_codec;
+    p_sys->b_planar = false;
 
     p_sys->p_buffer = NULL;
+    p_sys->p_interleave_buf = NULL;
     p_sys->i_buffer_out = 0;
 
     p_context = avcodec_alloc_context3(p_codec);
     p_sys->p_context = p_context;
     p_sys->p_context->codec_id = p_sys->p_codec->id;
+    p_context->thread_type = 0;
     p_context->debug = var_InheritInteger( p_enc, "avcodec-debug" );
     p_context->opaque = (void *)p_this;
 
-    /* set CPU capabilities */
-#if LIBAVUTIL_VERSION_CHECK(51, 25, 0, 42, 100)
-    av_set_cpu_flags_mask( INT_MAX & ~GetVlcDspMask() );
-#else
-    p_context->dsp_mask = GetVlcDspMask();
-#endif
-
     p_sys->i_key_int = var_GetInteger( p_enc, ENC_CFG_PREFIX "keyint" );
     p_sys->i_b_frames = var_GetInteger( p_enc, ENC_CFG_PREFIX "bframes" );
     p_sys->i_vtolerance = var_GetInteger( p_enc, ENC_CFG_PREFIX "vt" ) * 1000;
@@ -338,8 +379,12 @@ int OpenEncoder( vlc_object_t *p_this )
     p_sys->b_mpeg4_matrix = var_GetBool( p_enc, ENC_CFG_PREFIX "mpeg4-matrix" );
 
     f_val = var_GetFloat( p_enc, ENC_CFG_PREFIX "qscale" );
-    if( f_val < 0.01 || f_val > 255.0 ) f_val = 0;
-    p_sys->i_quality = (int)(FF_QP2LAMBDA * f_val + 0.5);
+
+    p_sys->i_quality = 0;
+    if( f_val < .01f || f_val > 255.f )
+        f_val = 0.f;
+    else
+        p_sys->i_quality = lroundf(FF_QP2LAMBDA * f_val);
 
     psz_val = var_GetString( p_enc, ENC_CFG_PREFIX "hq" );
     p_sys->i_hq = FF_MB_DECISION_RD;
@@ -383,10 +428,8 @@ int OpenEncoder( vlc_object_t *p_this )
             p_sys->i_aac_profile = FF_PROFILE_AAC_MAIN;
         else if( !strncmp( psz_val, "low", 3 ) )
             p_sys->i_aac_profile = FF_PROFILE_AAC_LOW;
-#if 0    /* Not supported by FAAC encoder */
         else if( !strncmp( psz_val, "ssr", 3 ) )
             p_sys->i_aac_profile = FF_PROFILE_AAC_SSR;
-#endif
         else if( !strncmp( psz_val, "ltp", 3 ) )
             p_sys->i_aac_profile = FF_PROFILE_AAC_LTP;
 #if LIBAVCODEC_VERSION_CHECK( 54, 19, 0, 35, 100 )
@@ -395,6 +438,10 @@ int OpenEncoder( vlc_object_t *p_this )
             p_sys->i_aac_profile = FF_PROFILE_AAC_HE_V2;
         else if( !strncmp( psz_val, "hev1", 4 ) )
             p_sys->i_aac_profile = FF_PROFILE_AAC_HE;
+        else if( !strncmp( psz_val, "ld", 2 ) )
+            p_sys->i_aac_profile = FF_PROFILE_AAC_LD;
+        else if( !strncmp( psz_val, "eld", 3 ) )
+            p_sys->i_aac_profile = FF_PROFILE_AAC_ELD;
 #endif
         else
         {
@@ -406,21 +453,23 @@ int OpenEncoder( vlc_object_t *p_this )
 
     if( p_enc->fmt_in.i_cat == VIDEO_ES )
     {
-        if( !p_enc->fmt_in.video.i_width || !p_enc->fmt_in.video.i_height )
+        if( !p_enc->fmt_in.video.i_visible_width || !p_enc->fmt_in.video.i_visible_height )
         {
-            msg_Warn( p_enc, "invalid size %ix%i", p_enc->fmt_in.video.i_width,
-                      p_enc->fmt_in.video.i_height );
+            msg_Warn( p_enc, "invalid size %ix%i", p_enc->fmt_in.video.i_visible_width,
+                      p_enc->fmt_in.video.i_visible_height );
             free( p_sys );
             return VLC_EGENERIC;
         }
 
         p_context->codec_type = AVMEDIA_TYPE_VIDEO;
 
-        p_context->width = p_enc->fmt_in.video.i_width;
-        p_context->height = p_enc->fmt_in.video.i_height;
+        p_context->width = p_enc->fmt_in.video.i_visible_width;
+        p_context->height = p_enc->fmt_in.video.i_visible_height;
 
-        p_context->time_base.num = p_enc->fmt_in.video.i_frame_rate_base;
-        p_context->time_base.den = p_enc->fmt_in.video.i_frame_rate;
+        /* if we don't have i_frame_rate_base, we are probing and just checking if we can find codec
+         * so set fps to 25 as some codecs (DIV3 atleast) needs time_base data */
+        p_context->time_base.num = p_enc->fmt_in.video.i_frame_rate_base ? p_enc->fmt_in.video.i_frame_rate_base : 1;
+        p_context->time_base.den = p_enc->fmt_in.video.i_frame_rate_base ? p_enc->fmt_in.video.i_frame_rate : 25 ;
         if( p_codec->supported_framerates )
         {
             AVRational target = {
@@ -432,6 +481,7 @@ int OpenEncoder( vlc_object_t *p_this )
             p_context->time_base.num = p_codec->supported_framerates[idx].den;
             p_context->time_base.den = p_codec->supported_framerates[idx].num;
         }
+        msg_Dbg( p_enc, "Time base set to %d/%d", p_context->time_base.num, p_context->time_base.den );
 
         /* Defaults from ffmpeg.c */
         p_context->qblur = 0.5;
@@ -467,6 +517,11 @@ int OpenEncoder( vlc_object_t *p_this )
 
 
         p_enc->fmt_in.i_codec = VLC_CODEC_I420;
+
+        /* Very few application support YUV in TIFF, not even VLC */
+        if( p_enc->fmt_out.i_codec == VLC_CODEC_TIFF )
+            p_enc->fmt_in.i_codec = VLC_CODEC_RGB24;
+
         p_enc->fmt_in.video.i_chroma = p_enc->fmt_in.i_codec;
         GetFfmpegChroma( &p_context->pix_fmt, &p_enc->fmt_in.video );
 
@@ -483,7 +538,7 @@ int OpenEncoder( vlc_object_t *p_this )
         }
 
 
-        if ( p_sys->f_i_quant_factor != 0.0 )
+        if ( p_sys->f_i_quant_factor != 0.f )
             p_context->i_quant_factor = p_sys->f_i_quant_factor;
 
         p_context->noise_reduction = p_sys->i_noise_reduction;
@@ -575,11 +630,15 @@ int OpenEncoder( vlc_object_t *p_this )
         else
         {
             p_context->rc_qsquish = 1.0;
-            if( p_sys->i_rc_buffer_size )
+            /* Default to 1/2 second buffer for given bitrate unless defined otherwise*/
+            if( !p_sys->i_rc_buffer_size )
             {
-                p_context->rc_max_rate = p_enc->fmt_out.i_bitrate;
-                p_context->rc_min_rate = p_enc->fmt_out.i_bitrate;
+                p_sys->i_rc_buffer_size = p_enc->fmt_out.i_bitrate * 8 / 2;
             }
+            msg_Dbg( p_enc, "rc buffer size %d bits", p_sys->i_rc_buffer_size );
+            /* Set maxrate/minrate to bitrate to try to get CBR */
+            p_context->rc_max_rate = p_enc->fmt_out.i_bitrate;
+            p_context->rc_min_rate = p_enc->fmt_out.i_bitrate;
             p_context->rc_buffer_size = p_sys->i_rc_buffer_size;
             /* This is from ffmpeg's ffmpeg.c : */
             p_context->rc_initial_buffer_occupancy
@@ -590,35 +649,102 @@ int OpenEncoder( vlc_object_t *p_this )
     else if( p_enc->fmt_in.i_cat == AUDIO_ES )
     {
         /* work around bug in libmp3lame encoding */
-        if( i_codec_id == AV_CODEC_ID_MP3 && p_enc->fmt_in.audio.i_channels > 2 )
-            p_enc->fmt_in.audio.i_channels = 2;
-
+        if( i_codec_id == AV_CODEC_ID_MP3 && p_enc->fmt_out.audio.i_channels  > 2 )
+            p_enc->fmt_out.audio.i_channels = 2;
         p_context->codec_type  = AVMEDIA_TYPE_AUDIO;
         p_context->sample_fmt  = p_codec->sample_fmts ?
                                     p_codec->sample_fmts[0] :
                                     AV_SAMPLE_FMT_S16;
 
+        /* Try to match avcodec input format to vlc format so we could avoid one
+           format conversion */
+        if( GetVlcAudioFormat( p_context->sample_fmt ) != p_enc->fmt_in.i_codec
+            && p_codec->sample_fmts )
+        {
+            msg_Dbg( p_enc, "Trying to find more suitable sample format instead of %s", av_get_sample_fmt_name( p_context->sample_fmt ) );
+            for( unsigned int i=0; p_codec->sample_fmts[i] != -1; i++ )
+            {
+                if( GetVlcAudioFormat( p_codec->sample_fmts[i] ) == p_enc->fmt_in.i_codec )
+                {
+                    p_context->sample_fmt = p_codec->sample_fmts[i];
+                    msg_Dbg( p_enc, "Using %s as new sample format", av_get_sample_fmt_name( p_context->sample_fmt ) );
+                    break;
+                }
+            }
+        }
+        p_sys->b_planar = av_sample_fmt_is_planar( p_context->sample_fmt );
         // Try if we can use interleaved format for codec input as VLC doesn't really do planar audio yet
         // FIXME: Remove when planar/interleaved audio in vlc is equally supported
-        if( av_sample_fmt_is_planar( p_context->sample_fmt ) )
+        if( p_sys->b_planar && p_codec->sample_fmts )
         {
-            msg_Dbg( p_enc, "Trying to find packet sample format instead of %s", av_get_sample_fmt_name( p_context->sample_fmt ) );
+            msg_Dbg( p_enc, "Trying to find packet sample format instead of planar %s", av_get_sample_fmt_name( p_context->sample_fmt ) );
             for( unsigned int i=0; p_codec->sample_fmts[i] != -1; i++ )
             {
                 if( !av_sample_fmt_is_planar( p_codec->sample_fmts[i] ) )
                 {
                     p_context->sample_fmt = p_codec->sample_fmts[i];
-                    msg_Dbg( p_enc, "Using %s as new sample format", av_get_sample_fmt_name( p_context->sample_fmt ) );
+                    msg_Dbg( p_enc, "Changing to packet format %s as new sample format", av_get_sample_fmt_name( p_context->sample_fmt ) );
                     break;
                 }
             }
         }
+        msg_Dbg( p_enc, "Ended up using %s as sample format", av_get_sample_fmt_name( p_context->sample_fmt ) );
         p_enc->fmt_in.i_codec  = GetVlcAudioFormat( p_context->sample_fmt );
+        p_sys->b_planar = av_sample_fmt_is_planar( p_context->sample_fmt );
 
         p_context->sample_rate = p_enc->fmt_out.audio.i_rate;
+        date_Init( &p_sys->buffer_date, p_enc->fmt_out.audio.i_rate, 1 );
+        date_Set( &p_sys->buffer_date, AV_NOPTS_VALUE );
         p_context->time_base.num = 1;
         p_context->time_base.den = p_context->sample_rate;
-        p_context->channels    = p_enc->fmt_out.audio.i_channels;
+        p_context->channels      = p_enc->fmt_out.audio.i_channels;
+#if LIBAVUTIL_VERSION_CHECK( 52, 2, 6, 0, 0)
+        p_context->channel_layout = channel_mask[p_context->channels][1];
+
+        /* Setup Channel ordering for multichannel audio
+         * as VLC channel order isn't same as libavcodec expects
+         */
+
+        p_sys->i_channels_to_reorder = 0;
+
+        /* Specified order
+         * Copied from audio.c
+         */
+        const unsigned i_order_max = 8 * sizeof(p_context->channel_layout);
+        uint32_t pi_order_dst[AOUT_CHAN_MAX] = { };
+        int i_channels_src = 0;
+
+        if( p_context->channel_layout )
+        {
+            msg_Dbg( p_enc, "Creating channel order for reordering");
+            for( unsigned i = 0; i < sizeof(pi_channels_map)/sizeof(*pi_channels_map); i++ )
+            {
+                if( p_context->channel_layout & pi_channels_map[i][0] )
+                {
+                    msg_Dbg( p_enc, "%d %"PRIx64" mapped to %"PRIx64"", i_channels_src, pi_channels_map[i][0], pi_channels_map[i][1]);
+                    pi_order_dst[i_channels_src++] = pi_channels_map[i][1];
+                }
+            }
+        }
+        else
+        {
+            msg_Dbg( p_enc, "Creating default channel order for reordering");
+            /* Create default order  */
+            for( unsigned int i = 0; i < __MIN( i_order_max, (unsigned)p_sys->p_context->channels ); i++ )
+            {
+                if( i < sizeof(pi_channels_map)/sizeof(*pi_channels_map) )
+                {
+                    msg_Dbg( p_enc, "%d channel is %"PRIx64"", i_channels_src, pi_channels_map[i][1]);
+                    pi_order_dst[i_channels_src++] = pi_channels_map[i][1];
+                }
+            }
+        }
+        if( i_channels_src != p_context->channels )
+            msg_Err( p_enc, "Channel layout not understood" );
+
+        p_sys->i_channels_to_reorder = aout_CheckChannelReorder( NULL, pi_order_dst,
+            channel_mask[p_context->channels][0], p_sys->pi_reorder_layout );
+#endif
 
         if ( p_enc->fmt_out.i_codec == VLC_CODEC_MP4A )
         {
@@ -648,7 +774,7 @@ int OpenEncoder( vlc_object_t *p_this )
         //p_context->rc_max_rate = 24 * 1000 * 1000; //24M
         //p_context->rc_min_rate = 40 * 1000; // 40k
         /* seems that FFmpeg presets have 720p as divider for buffers */
-        if( p_enc->fmt_out.video.i_height >= 720 )
+        if( p_enc->fmt_out.video.i_visible_height >= 720 )
         {
             /* Check that we don't overrun users qmin/qmax values */
             if( !var_GetInteger( p_enc, ENC_CFG_PREFIX "qmin" ) )
@@ -700,83 +826,98 @@ int OpenEncoder( vlc_object_t *p_this )
         p_context->thread_count = vlc_GetCPUCount();
 
     int ret;
+    char *psz_opts = var_InheritString(p_enc, ENC_CFG_PREFIX "options");
+    AVDictionary *options = NULL;
+    if (psz_opts && *psz_opts)
+        options = vlc_av_get_options(psz_opts);
+    free(psz_opts);
+
     vlc_avcodec_lock();
-    ret = avcodec_open2( p_context, p_codec, NULL /* options */ );
+    ret = avcodec_open2( p_context, p_codec, options ? &options : NULL );
     vlc_avcodec_unlock();
+
+    AVDictionaryEntry *t = NULL;
+    while ((t = av_dict_get(options, "", t, AV_DICT_IGNORE_SUFFIX))) {
+        msg_Err(p_enc, "Unknown option \"%s\"", t->key);
+    }
+
     if( ret )
     {
-        if( p_enc->fmt_in.i_cat == AUDIO_ES &&
-             (p_context->channels > 2 || i_codec_id == AV_CODEC_ID_MP2
-               || i_codec_id == AV_CODEC_ID_MP3) )
+        if( p_enc->fmt_in.i_cat != AUDIO_ES ||
+                (p_context->channels <= 2 && i_codec_id != AV_CODEC_ID_MP2
+                 && i_codec_id != AV_CODEC_ID_MP3) )
+errmsg:
         {
-            if( p_context->channels > 2 )
+            static const char types[][12] = {
+                [UNKNOWN_ES] = N_("unknown"), [VIDEO_ES] = N_("video"),
+                [AUDIO_ES] = N_("audio"), [SPU_ES] = N_("subpicture"),
+            };
+            const char *type = types[0];
+            union
             {
-                p_context->channels = 2;
-                p_enc->fmt_in.audio.i_channels = 2; // FIXME
-                msg_Warn( p_enc, "stereo mode selected (codec limitation)" );
-            }
+                vlc_fourcc_t value;
+                char txt[4];
+            } fcc = { .value = p_enc->fmt_out.i_codec };
 
-            if( i_codec_id == AV_CODEC_ID_MP2 || i_codec_id == AV_CODEC_ID_MP3 )
-            {
-                int i_frequency, i;
+            if (likely((unsigned)p_enc->fmt_in.i_cat < sizeof (types) / sizeof (types[0])))
+                type = types[p_enc->fmt_in.i_cat];
+            msg_Err( p_enc, "cannot open %4.4s %s encoder", fcc.txt, type );
+            dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
+                          _("VLC could not open the %4.4s %s encoder."),
+                          fcc.txt, vlc_gettext(type) );
+            av_dict_free(&options);
+            goto error;
+        }
 
-                for ( i_frequency = 0; i_frequency < 6; i_frequency++ )
-                {
-                    if ( p_enc->fmt_out.audio.i_rate
-                            == mpa_freq_tab[i_frequency] )
-                        break;
-                }
-                if ( i_frequency == 6 )
-                {
-                    msg_Err( p_enc, "MPEG audio doesn't support frequency=%d",
-                             p_enc->fmt_out.audio.i_rate );
-                    free( p_sys );
-                    return VLC_EGENERIC;
-                }
+        if( p_context->channels > 2 )
+        {
+            p_context->channels = 2;
+            p_enc->fmt_in.audio.i_channels = 2; // FIXME
+            msg_Warn( p_enc, "stereo mode selected (codec limitation)" );
+        }
 
-                for ( i = 1; i < 14; i++ )
-                {
-                    if ( p_enc->fmt_out.i_bitrate / 1000
-                          <= mpa_bitrate_tab[i_frequency / 3][i] )
-                        break;
-                }
-                if ( p_enc->fmt_out.i_bitrate / 1000
-                      != mpa_bitrate_tab[i_frequency / 3][i] )
-                {
-                    msg_Warn( p_enc,
-                              "MPEG audio doesn't support bitrate=%d, using %d",
-                              p_enc->fmt_out.i_bitrate,
-                              mpa_bitrate_tab[i_frequency / 3][i] * 1000 );
-                    p_enc->fmt_out.i_bitrate =
-                        mpa_bitrate_tab[i_frequency / 3][i] * 1000;
-                    p_context->bit_rate = p_enc->fmt_out.i_bitrate;
-                }
+        if( i_codec_id == AV_CODEC_ID_MP2 || i_codec_id == AV_CODEC_ID_MP3 )
+        {
+            int i_frequency, i;
+            es_format_t *fmt = &p_enc->fmt_out;
+
+            for ( i_frequency = 0; i_frequency < 6; i_frequency++ )
+                if ( fmt->audio.i_rate == mpa_freq_tab[i_frequency] )
+                    break;
+
+            if ( i_frequency == 6 )
+            {
+                msg_Err( p_enc, "MPEG audio doesn't support frequency=%d",
+                        fmt->audio.i_rate );
+                av_dict_free(&options);
+                goto error;
             }
 
-            p_context->codec = NULL;
-            vlc_avcodec_lock();
-            ret = avcodec_open2( p_context, p_codec, NULL /* options */ );
-            vlc_avcodec_unlock();
-            if( ret )
+            for ( i = 1; i < 14; i++ )
+                if (fmt->i_bitrate/1000 <= mpa_bitrate_tab[i_frequency / 3][i])
+                    break;
+
+            if (fmt->i_bitrate / 1000 != mpa_bitrate_tab[i_frequency / 3][i])
             {
-                msg_Err( p_enc, "cannot open encoder" );
-                dialog_Fatal( p_enc,
-                                _("Streaming / Transcoding failed"),
-                                "%s", _("VLC could not open the encoder.") );
-                free( p_sys );
-                return VLC_EGENERIC;
+                msg_Warn( p_enc,
+                        "MPEG audio doesn't support bitrate=%d, using %d",
+                        fmt->i_bitrate,
+                        mpa_bitrate_tab[i_frequency / 3][i] * 1000 );
+                fmt->i_bitrate = mpa_bitrate_tab[i_frequency / 3][i] * 1000;
+                p_context->bit_rate = fmt->i_bitrate;
             }
         }
-        else
-        {
-            msg_Err( p_enc, "cannot open encoder" );
-            dialog_Fatal( p_enc, _("Streaming / Transcoding failed"),
-                            "%s", _("VLC could not open the encoder.") );
-            free( p_sys );
-            return VLC_EGENERIC;
-        }
+
+        p_context->codec = NULL;
+        vlc_avcodec_lock();
+        ret = avcodec_open2( p_context, p_codec, options ? &options : NULL );
+        vlc_avcodec_unlock();
+        if( ret )
+            goto errmsg;
     }
 
+    av_dict_free(&options);
+
     if( i_codec_id == AV_CODEC_ID_FLAC )
     {
         p_enc->fmt_out.i_extra = 4 + 1 + 3 + p_context->extradata_size;
@@ -821,20 +962,31 @@ int OpenEncoder( vlc_object_t *p_this )
         p_enc->fmt_in.i_codec = GetVlcAudioFormat( p_sys->p_context->sample_fmt );
         p_enc->fmt_in.audio.i_bitspersample = aout_BitsPerSample( p_enc->fmt_in.i_codec );
 
-        p_sys->i_sample_bytes = (p_enc->fmt_in.audio.i_bitspersample / 8) *
-                                p_context->channels;
+        p_sys->i_sample_bytes = (p_enc->fmt_in.audio.i_bitspersample / 8);
         p_sys->i_frame_size = p_context->frame_size > 1 ?
                                     p_context->frame_size :
                                     FF_MIN_BUFFER_SIZE;
-        p_sys->p_buffer = malloc( p_sys->i_frame_size * p_sys->i_sample_bytes );
+        p_sys->i_buffer_out = av_samples_get_buffer_size(NULL,
+                p_sys->p_context->channels, p_sys->i_frame_size,
+                p_sys->p_context->sample_fmt, DEFAULT_ALIGN);
+        p_sys->p_buffer = av_malloc( p_sys->i_buffer_out );
         if ( unlikely( p_sys->p_buffer == NULL ) )
         {
             goto error;
         }
+        p_enc->fmt_out.audio.i_frame_length = p_context->frame_size;
         p_enc->fmt_out.audio.i_blockalign = p_context->block_align;
         p_enc->fmt_out.audio.i_bitspersample = aout_BitsPerSample( p_enc->fmt_out.i_codec );
+        //b_variable tells if we can feed any size frames to encoder
+        p_sys->b_variable = p_context->frame_size ? false : true;
 
-        p_sys->i_buffer_out = p_sys->i_frame_size * p_sys->i_sample_bytes;
+
+        if( p_sys->b_planar )
+        {
+            p_sys->p_interleave_buf = av_malloc( p_sys->i_buffer_out );
+            if( unlikely( p_sys->p_interleave_buf == NULL ) )
+                goto error;
+        }
     }
 
     p_sys->frame = avcodec_alloc_frame();
@@ -843,7 +995,7 @@ int OpenEncoder( vlc_object_t *p_this )
         goto error;
     }
     msg_Dbg( p_enc, "found encoder %s", psz_namecodec );
-    
+
     p_enc->pf_encode_video = EncodeVideo;
     p_enc->pf_encode_audio = EncodeAudio;
 
@@ -851,37 +1003,60 @@ int OpenEncoder( vlc_object_t *p_this )
     return VLC_SUCCESS;
 error:
     free( p_enc->fmt_out.p_extra );
-    free( p_sys->p_buffer );
+    av_free( p_sys->p_buffer );
+    av_free( p_sys->p_interleave_buf );
     free( p_sys );
     return VLC_ENOMEM;
 }
 
+typedef struct
+{
+    block_t self;
+    AVPacket packet;
+} vlc_av_packet_t;
+
+static void vlc_av_packet_Release(block_t *block)
+{
+    vlc_av_packet_t *b = (void *) block;
+
+    av_free_packet(&b->packet);
+    free(b);
+}
+
+static block_t *vlc_av_packet_Wrap(AVPacket *packet, mtime_t i_length)
+{
+    vlc_av_packet_t *b = malloc( sizeof( *b ) );
+    if( unlikely(b == NULL) )
+        return NULL;
+
+    block_t *p_block = &b->self;
+
+    block_Init( p_block, packet->data, packet->size );
+    p_block->i_nb_samples = 0;
+    p_block->pf_release = vlc_av_packet_Release;
+    b->packet = *packet;
+
+    p_block->i_length = i_length;
+    p_block->i_pts = packet->pts;
+    p_block->i_dts = packet->dts;
+    if( unlikely( packet->flags & AV_PKT_FLAG_CORRUPT ) )
+        p_block->i_flags |= BLOCK_FLAG_CORRUPTED;
+
+    return p_block;
+}
+
 /****************************************************************************
  * EncodeVideo: the whole thing
  ****************************************************************************/
 static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
 {
     encoder_sys_t *p_sys = p_enc->p_sys;
-    int i_out, i_plane, i_got_packet=1;
-    AVPacket av_pkt;
-
-    /* Initialize the video output buffer the first time.
-     * This is done here instead of OpenEncoder() because we need the actual
-     * bits_per_pixel value, without having to assume anything.
-     */
-    const int bytesPerPixel = p_enc->fmt_out.video.i_bits_per_pixel ?
-                         p_enc->fmt_out.video.i_bits_per_pixel / 8 : 3;
-    const int blocksize = __MAX( FF_MIN_BUFFER_SIZE,bytesPerPixel * p_sys->p_context->height * p_sys->p_context->width + 200 );
-    block_t *p_block = block_Alloc( blocksize );
+    int i_plane;
 
-#if (LIBAVCODEC_VERSION_MAJOR >= 54)
-    /*We don't use av_pkt with major_version < 54, so no point init it*/
-    av_init_packet( &av_pkt );
-    av_pkt.data = p_block->p_buffer;
-    av_pkt.size = p_block->i_buffer;
-#endif
+    AVFrame *frame = NULL;
     if( likely(p_pict) ) {
-        avcodec_get_frame_defaults( p_sys->frame );
+        frame = p_sys->frame;
+        avcodec_get_frame_defaults( frame );
         for( i_plane = 0; i_plane < p_pict->i_planes; i_plane++ )
         {
             p_sys->frame->data[i_plane] = p_pict->p[i_plane].p_pixels;
@@ -889,20 +1064,20 @@ static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
         }
 
         /* Let libavcodec select the frame type */
-        p_sys->frame->pict_type = 0;
+        frame->pict_type = 0;
 
-        p_sys->frame->repeat_pict = p_pict->i_nb_fields - 2;
-        p_sys->frame->interlaced_frame = !p_pict->b_progressive;
-        p_sys->frame->top_field_first = !!p_pict->b_top_field_first;
+        frame->repeat_pict = p_pict->i_nb_fields - 2;
+        frame->interlaced_frame = !p_pict->b_progressive;
+        frame->top_field_first = !!p_pict->b_top_field_first;
 
         /* Set the pts of the frame being encoded */
-        p_sys->frame->pts = p_pict->date ? p_pict->date : (int64_t)AV_NOPTS_VALUE;
+        frame->pts = (p_pict->date == VLC_TS_INVALID) ? AV_NOPTS_VALUE : p_pict->date;
 
-        if ( p_sys->b_hurry_up && p_sys->frame->pts != (int64_t)AV_NOPTS_VALUE )
+        if ( p_sys->b_hurry_up && frame->pts != AV_NOPTS_VALUE )
         {
             mtime_t current_date = mdate();
 
-            if ( current_date + HURRY_UP_GUARD3 > p_sys->frame->pts )
+            if ( current_date + HURRY_UP_GUARD3 > frame->pts )
             {
                 p_sys->p_context->mb_decision = FF_MB_DECISION_SIMPLE;
                 p_sys->p_context->trellis = 0;
@@ -912,11 +1087,11 @@ static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
             {
                 p_sys->p_context->mb_decision = p_sys->i_hq;
 
-                if ( current_date + HURRY_UP_GUARD2 > p_sys->frame->pts )
+                if ( current_date + HURRY_UP_GUARD2 > frame->pts )
                 {
                     p_sys->p_context->trellis = 0;
                     p_sys->p_context->noise_reduction = p_sys->i_noise_reduction
-                        + (HURRY_UP_GUARD2 + current_date - p_sys->frame->pts) / 500;
+                        + (HURRY_UP_GUARD2 + current_date - frame->pts) / 500;
                     msg_Dbg( p_enc, "hurry up mode 2" );
                 }
                 else
@@ -928,114 +1103,55 @@ static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
                 }
             }
 
-            if ( current_date + HURRY_UP_GUARD1 > p_sys->frame->pts )
+            if ( current_date + HURRY_UP_GUARD1 > frame->pts )
             {
-                p_sys->frame->pict_type = AV_PICTURE_TYPE_P;
+                frame->pict_type = AV_PICTURE_TYPE_P;
                 /* msg_Dbg( p_enc, "hurry up mode 1 %lld", current_date + HURRY_UP_GUARD1 - frame.pts ); */
             }
         }
 
-        if ( p_sys->frame->pts != (int64_t)AV_NOPTS_VALUE && p_sys->frame->pts != 0 )
+        if ( ( frame->pts != AV_NOPTS_VALUE ) && ( frame->pts != VLC_TS_INVALID ) )
         {
-            if ( p_sys->i_last_pts == p_sys->frame->pts )
+            if ( p_sys->i_last_pts == frame->pts )
             {
-                msg_Warn( p_enc, "almost fed libavcodec with two frames with the "
-                         "same PTS (%"PRId64 ")", p_sys->frame->pts );
+                msg_Warn( p_enc, "almost fed libavcodec with two frames with "
+                          "the same PTS (%"PRId64 ")", frame->pts );
                 return NULL;
             }
-            else if ( p_sys->i_last_pts > p_sys->frame->pts )
+            else if ( p_sys->i_last_pts > frame->pts )
             {
                 msg_Warn( p_enc, "almost fed libavcodec with a frame in the "
                          "past (current: %"PRId64 ", last: %"PRId64")",
-                         p_sys->frame->pts, p_sys->i_last_pts );
+                         frame->pts, p_sys->i_last_pts );
                 return NULL;
             }
             else
-            {
-                p_sys->i_last_pts = p_sys->frame->pts;
-            }
+                p_sys->i_last_pts = frame->pts;
         }
 
-        p_sys->frame->quality = p_sys->i_quality;
-
-#if (LIBAVCODEC_VERSION_MAJOR < 54)
-        i_out = avcodec_encode_video( p_sys->p_context, p_block->p_buffer, p_block->i_buffer, p_sys->frame );
-#else
-        i_out = avcodec_encode_video2( p_sys->p_context, &av_pkt, p_sys->frame, &i_got_packet );
-#endif
+        frame->quality = p_sys->i_quality;
     }
-    else
-    {
-#if (LIBAVCODEC_VERSION_MAJOR < 54)
-        i_out = avcodec_encode_video( p_sys->p_context, p_block->p_buffer, p_block->i_buffer, NULL);
-#else
-        i_out = avcodec_encode_video2( p_sys->p_context, &av_pkt, NULL, &i_got_packet );
-#endif
-    }
-
-    if( unlikely( i_out < 0 || i_got_packet == 0 ) )
-    {
-        block_Release( p_block );
-        return NULL;
-    }
-
 
-#if (LIBAVCODEC_VERSION_MAJOR < 54)
-    p_block->i_buffer = i_out;
+    AVPacket av_pkt;
+    av_pkt.data = NULL;
+    av_pkt.size = 0;
+    int is_data;
 
-    /* FIXME, 3-2 pulldown is not handled correctly */
-    p_block->i_length = INT64_C(1000000) *
-        p_enc->fmt_in.video.i_frame_rate_base /
-            p_enc->fmt_in.video.i_frame_rate;
+    av_init_packet( &av_pkt );
 
-    if( !p_sys->p_context->max_b_frames || !p_sys->p_context->delay )
+    if( avcodec_encode_video2( p_sys->p_context, &av_pkt, frame, &is_data ) < 0
+     || is_data == 0 )
     {
-        /* No delay -> output pts == input pts */
-        if( p_pict )
-            p_block->i_dts = p_pict->date;
-        p_block->i_pts = p_block->i_dts;
+        return NULL;
     }
-    else if( p_sys->p_context->coded_frame->pts != (int64_t)AV_NOPTS_VALUE &&
-        p_sys->p_context->coded_frame->pts != 0 &&
-        p_sys->i_buggy_pts_detect != p_sys->p_context->coded_frame->pts )
-    {
-        p_sys->i_buggy_pts_detect = p_sys->p_context->coded_frame->pts;
-        p_block->i_pts = p_sys->p_context->coded_frame->pts;
 
-        if( p_sys->p_context->coded_frame->pict_type != AV_PICTURE_TYPE_I &&
-            p_sys->p_context->coded_frame->pict_type != AV_PICTURE_TYPE_P )
-        {
-            p_block->i_dts = p_block->i_pts;
-        }
-        else
-        {
-            if( p_sys->i_last_ref_pts )
-            {
-                p_block->i_dts = p_sys->i_last_ref_pts;
-            }
-            else
-            {
-                /* Let's put something sensible */
-                p_block->i_dts = p_block->i_pts;
-            }
-
-            p_sys->i_last_ref_pts = p_block->i_pts;
-        }
-    }
-    else if( p_pict )
+    block_t *p_block = vlc_av_packet_Wrap( &av_pkt,
+            av_pkt.duration / p_sys->p_context->time_base.den );
+    if( unlikely(p_block == NULL) )
     {
-        /* Buggy libavcodec which doesn't update coded_frame->pts
-         * correctly */
-        p_block->i_dts = p_block->i_pts = p_pict->date;
+        av_free_packet( &av_pkt );
+        return NULL;
     }
-#else
-    p_block->i_buffer = av_pkt.size;
-
-    p_block->i_length = av_pkt.duration / p_sys->p_context->time_base.den;
-
-    p_block->i_pts = av_pkt.pts;
-    p_block->i_dts = av_pkt.dts;
-#endif
 
     switch ( p_sys->p_context->coded_frame->pict_type )
     {
@@ -1058,184 +1174,217 @@ static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
     return p_block;
 }
 
-/****************************************************************************
- * EncodeAudio: the whole thing
- ****************************************************************************/
-static block_t *EncodeAudio( encoder_t *p_enc, block_t *p_aout_buf )
+static block_t *encode_audio_buffer( encoder_t *p_enc, encoder_sys_t *p_sys,  AVFrame *frame )
 {
-    encoder_sys_t *p_sys = p_enc->p_sys;
+    int got_packet, i_out;
+    got_packet=i_out=0;
+    AVPacket packet = {0};
+    block_t *p_block = block_Alloc( p_sys->i_buffer_out );
+    av_init_packet( &packet );
+    packet.data = p_block->p_buffer;
+    packet.size = p_block->i_buffer;
+
+    i_out = avcodec_encode_audio2( p_sys->p_context, &packet, frame, &got_packet );
+    if( unlikely( !got_packet || ( i_out < 0 ) ) )
+    {
+        if( i_out < 0 )
+        {
+            msg_Err( p_enc,"Encoding problem..");
+        }
+        block_Release( p_block );
+        return NULL;
+    }
+    p_block->i_buffer = packet.size;
 
-    block_t *p_block, *p_chain = NULL;
-    int got_packet,i_out,i_samples_left=0,i_data_offset = 0;
+    p_block->i_length = (mtime_t)CLOCK_FREQ *
+     (mtime_t)p_sys->i_frame_size /
+     (mtime_t)p_sys->p_context->sample_rate;
 
-    //i_samples_left is amount of samples we get
-    i_samples_left = p_aout_buf ? p_aout_buf->i_nb_samples : 0;
+    if( likely( packet.pts != AV_NOPTS_VALUE ) )
+        p_block->i_dts = p_block->i_pts = packet.pts;
+    else
+        p_block->i_dts = p_block->i_pts = VLC_TS_INVALID;
+    return p_block;
+}
+
+static block_t *handle_delay_buffer( encoder_t *p_enc, encoder_sys_t *p_sys, int buffer_delay, block_t *p_aout_buf, int leftover_samples )
+{
+    block_t *p_block = NULL;
+    //How much we need to copy from new packet
+    const int leftover = leftover_samples * p_sys->p_context->channels * p_sys->i_sample_bytes;
+
+    avcodec_get_frame_defaults( p_sys->frame );
+    p_sys->frame->format     = p_sys->p_context->sample_fmt;
+    p_sys->frame->nb_samples = leftover_samples + p_sys->i_samples_delay;
 
-    if( p_sys->i_samples_delay > 0 )
+
+    p_sys->frame->pts        = date_Get( &p_sys->buffer_date );
+
+    if( likely( p_sys->frame->pts != AV_NOPTS_VALUE) )
+        date_Increment( &p_sys->buffer_date, p_sys->frame->nb_samples );
+
+    if( likely( p_aout_buf ) )
     {
-        AVPacket packet;
-        //How much we need to copy from new packet
-        const int leftover = __MAX(0,__MIN(i_samples_left, (p_sys->i_frame_size - p_sys->i_samples_delay)));
 
-        avcodec_get_frame_defaults( p_sys->frame );
-        p_sys->frame->nb_samples = p_sys->i_samples_delay + leftover;
-        p_sys->frame->format     = p_sys->p_context->sample_fmt;
+        p_aout_buf->i_nb_samples -= leftover_samples;
+        memcpy( p_sys->p_buffer+buffer_delay, p_aout_buf->p_buffer, leftover );
 
-        //Copy samples from new packet to buffer to get frame size
-        if( likely( leftover ) )
-        {
-            if( av_sample_fmt_is_planar( p_sys->p_context->sample_fmt ) )
-                aout_Deinterleave( p_sys->p_buffer+(p_sys->i_samples_delay*p_sys->i_sample_bytes*p_enc->fmt_in.audio.i_channels ),
-                                  p_aout_buf->p_buffer, leftover, p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.i_codec );
-            else
-                memcpy( p_sys->p_buffer+(p_sys->i_samples_delay*p_sys->i_sample_bytes),
-                        p_aout_buf->p_buffer,
-                        leftover * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels
-                       );
-        }
+        // We need to deinterleave from p_aout_buf to p_buffer the leftover bytes
+        if( p_sys->b_planar )
+            aout_Deinterleave( p_sys->p_interleave_buf, p_sys->p_buffer,
+                p_sys->i_frame_size, p_sys->p_context->channels, p_enc->fmt_in.i_codec );
+        else
+            memcpy( p_sys->p_buffer + buffer_delay, p_aout_buf->p_buffer, leftover);
+
+        p_aout_buf->p_buffer     += leftover;
+        p_aout_buf->i_buffer     -= leftover;
+        if( likely( p_sys->frame->pts != AV_NOPTS_VALUE) )
+            p_aout_buf->i_pts         = date_Get( &p_sys->buffer_date );
+    }
 
-        if( avcodec_fill_audio_frame( p_sys->frame, p_enc->fmt_in.audio.i_channels,
-                              p_sys->p_context->sample_fmt,
-                              p_sys->p_buffer,
-                              (p_sys->i_samples_delay + leftover) * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels,
-                              0) < 0 )
-            msg_Err( p_enc, "Filling on leftovers error i_leftover %d i_samples_left %d samples_delay %d frame size %d", leftover, i_samples_left, p_sys->i_samples_delay, p_sys->i_frame_size );
+    if(unlikely( ( (leftover + buffer_delay) < p_sys->i_buffer_out ) &&
+                 !(p_sys->p_codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME )))
+    {
+        msg_Dbg( p_enc, "No small last frame support, padding");
+        size_t padding_size = p_sys->i_buffer_out - (leftover+buffer_delay);
+        memset( p_sys->p_buffer + (leftover+buffer_delay), 0, padding_size );
+        buffer_delay += padding_size;
+    }
+    if( avcodec_fill_audio_frame( p_sys->frame, p_sys->p_context->channels,
+            p_sys->p_context->sample_fmt, p_sys->b_planar ? p_sys->p_interleave_buf : p_sys->p_buffer,
+            p_sys->i_buffer_out,
+            DEFAULT_ALIGN) < 0 )
+    {
+        msg_Err( p_enc, "filling error on fillup" );
+        p_sys->frame->nb_samples = 0;
+    }
 
-        if( likely( p_aout_buf ) )
-            p_sys->frame->pts = p_aout_buf->i_pts -
-                     (mtime_t)1000000 * (mtime_t)p_sys->i_samples_delay /
-                     (mtime_t)p_enc->fmt_in.audio.i_rate;
 
-        p_sys->i_samples_delay = 0;
-        i_data_offset += leftover * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels;
-        i_samples_left -= leftover;
+    p_sys->i_samples_delay = 0;
 
-        p_block = block_Alloc( p_sys->i_buffer_out );
-        av_init_packet( &packet );
-        packet.data = p_block->p_buffer;
-        packet.size = p_block->i_buffer;
+    p_block = encode_audio_buffer( p_enc, p_sys, p_sys->frame );
 
-        i_out = avcodec_encode_audio2( p_sys->p_context, &packet, p_sys->frame, &got_packet );
-        p_block->i_buffer = packet.size;
+    return p_block;
+}
 
+/****************************************************************************
+ * EncodeAudio: the whole thing
+ ****************************************************************************/
+static block_t *EncodeAudio( encoder_t *p_enc, block_t *p_aout_buf )
+{
+    encoder_sys_t *p_sys = p_enc->p_sys;
 
-        if( unlikely( !got_packet || ( i_out < 0 ) ) )
-        {
-            if( i_out < 0 )
-            {
-                msg_Err( p_enc,"Encoding problem...");
-                return p_chain;
-            }
-        } else {
-            p_block->i_buffer = packet.size;
+    block_t *p_block, *p_chain = NULL;
+    size_t buffer_delay = 0, i_samples_left = 0;
 
-            p_block->i_length = (mtime_t)1000000 *
-             (mtime_t)p_sys->i_frame_size /
-             (mtime_t)p_sys->p_context->sample_rate;
 
-            p_block->i_dts = p_block->i_pts = packet.pts;
+    //i_bytes_left is amount of bytes we get
+    i_samples_left = p_aout_buf ? p_aout_buf->i_nb_samples : 0;
+    buffer_delay = p_sys->i_samples_delay * p_sys->i_sample_bytes * p_sys->p_context->channels;
 
-            block_ChainAppend( &p_chain, p_block );
-        }
+    //p_sys->i_buffer_out = p_sys->i_frame_size * chan * p_sys->i_sample_bytes
+    //Calculate how many bytes we would need from current buffer to fill frame
+    size_t leftover_samples = __MAX(0,__MIN((ssize_t)i_samples_left, (ssize_t)(p_sys->i_frame_size - p_sys->i_samples_delay)));
+
+    if( p_aout_buf && ( p_aout_buf->i_pts > VLC_TS_INVALID ) )
+    {
+        date_Set( &p_sys->buffer_date, p_aout_buf->i_pts );
+        /* take back amount we have leftover from previous buffer*/
+        if( p_sys->i_samples_delay > 0 )
+            date_Decrement( &p_sys->buffer_date, p_sys->i_samples_delay );
+    }
+    /* Handle reordering here so we have p_sys->p_buffer always in correct
+     * order already */
+    if( p_aout_buf && p_sys->i_channels_to_reorder > 0 )
+    {
+        aout_ChannelReorder( p_aout_buf->p_buffer, p_aout_buf->i_buffer,
+             p_sys->i_channels_to_reorder, p_sys->pi_reorder_layout,
+             p_enc->fmt_in.i_codec );
+    }
+
+    // Check if we have enough samples in delay_buffer and current p_aout_buf to fill frame
+    // Or if we are cleaning up
+    if( ( buffer_delay > 0 ) &&
+            ( ( p_aout_buf && ( leftover_samples <= p_aout_buf->i_nb_samples ) &&
+               ( (leftover_samples + p_sys->i_samples_delay ) >= p_sys->i_frame_size )
+              ) ||
+             ( !p_aout_buf )
+            )
+         )
+    {
+        p_chain = handle_delay_buffer( p_enc, p_sys, buffer_delay, p_aout_buf, leftover_samples );
+        buffer_delay = 0;
+        if( unlikely( !p_chain ) )
+            return NULL;
     }
 
     if( unlikely( !p_aout_buf ) )
     {
         msg_Dbg(p_enc,"Flushing..");
         do {
-            AVPacket packet;
-            p_block = block_Alloc( p_sys->i_buffer_out );
-            av_init_packet( &packet );
-            packet.data = p_block->p_buffer;
-            packet.size = p_block->i_buffer;
-
-            i_out = avcodec_encode_audio2( p_sys->p_context, &packet, NULL, &got_packet );
-            p_block->i_buffer = packet.size;
-
-            p_block->i_length = (mtime_t)1000000 *
-             (mtime_t)p_sys->i_frame_size /
-             (mtime_t)p_sys->p_context->sample_rate;
-
-            p_block->i_dts = p_block->i_pts = packet.pts;
-
-            if( !i_out && got_packet )
+            p_block = encode_audio_buffer( p_enc, p_sys, NULL );
+            if( likely( p_block ) )
+            {
                 block_ChainAppend( &p_chain, p_block );
-        } while( got_packet && !i_out );
+            }
+        } while( p_block );
         return p_chain;
     }
 
-    while( i_samples_left >= p_sys->i_frame_size )
-    {
-        AVPacket packet = {0};
 
-        p_sys->frame->nb_samples = p_sys->i_frame_size;
+    while( ( p_aout_buf->i_nb_samples >= p_sys->i_frame_size ) ||
+           ( p_sys->b_variable && p_aout_buf->i_nb_samples ) )
+    {
+        avcodec_get_frame_defaults( p_sys->frame );
+        if( p_sys->b_variable )
+            p_sys->frame->nb_samples = p_aout_buf->i_nb_samples;
+        else
+            p_sys->frame->nb_samples = p_sys->i_frame_size;
         p_sys->frame->format     = p_sys->p_context->sample_fmt;
+        p_sys->frame->pts        = date_Get( &p_sys->buffer_date );
 
-        if( av_sample_fmt_is_planar( p_sys->p_context->sample_fmt ) )
-        {
-            aout_Deinterleave( p_sys->p_buffer, p_aout_buf->p_buffer+i_data_offset,
-                              p_sys->i_frame_size, p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.i_codec );
-            if( avcodec_fill_audio_frame( p_sys->frame, p_enc->fmt_in.audio.i_channels,
-                                    p_sys->p_context->sample_fmt,
-                                    p_sys->p_buffer,
-                                    p_sys->i_frame_size * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels,
-                                    0) < 0 )
-                 msg_Err( p_enc, "filling error on encode" );
-        } else {
-            if( avcodec_fill_audio_frame( p_sys->frame, p_enc->fmt_in.audio.i_channels,
-                                    p_sys->p_context->sample_fmt,
-                                    p_aout_buf->p_buffer+i_data_offset,
-                                    p_sys->i_frame_size * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels,
-                                    0) < 0 )
-                 msg_Err( p_enc, "filling error on encode" );
-        }
-
-        i_samples_left -= p_sys->i_frame_size;
-        i_data_offset += p_sys->i_frame_size * p_sys->i_sample_bytes * p_enc->fmt_in.audio.i_channels;
-
-        p_sys->frame->pts = p_aout_buf->i_pts;
+        const int in_bytes = p_sys->frame->nb_samples *
+            p_sys->p_context->channels * p_sys->i_sample_bytes;
 
-        p_block = block_Alloc( p_sys->i_buffer_out );
-        av_init_packet( &packet );
-        packet.data = p_block->p_buffer;
-        packet.size = p_block->i_buffer;
-
-        i_out = avcodec_encode_audio2( p_sys->p_context, &packet, p_sys->frame, &got_packet );
-        p_block->i_buffer = packet.size;
+        if( p_sys->b_planar )
+        {
+            aout_Deinterleave( p_sys->p_buffer, p_aout_buf->p_buffer,
+                               p_sys->frame->nb_samples, p_sys->p_context->channels, p_enc->fmt_in.i_codec );
 
-        if( unlikely( !got_packet || ( i_out < 0 ) ) )
+        }
+        else
         {
-            if( i_out < 0 )
-            {
-                msg_Err( p_enc,"Encoding problem..");
-                return p_chain;
-            }
-            block_Release( p_block );
-            continue;
+            memcpy(p_sys->p_buffer, p_aout_buf->p_buffer, in_bytes);
         }
 
-        p_block->i_buffer = packet.size;
-
-        p_block->i_length = (mtime_t)1000000 *
-            (mtime_t)p_sys->i_frame_size /
-            (mtime_t)p_sys->p_context->sample_rate;
+        if( avcodec_fill_audio_frame( p_sys->frame, p_sys->p_context->channels,
+                                    p_sys->p_context->sample_fmt,
+                                    p_sys->p_buffer,
+                                    p_sys->i_buffer_out,
+                                    DEFAULT_ALIGN) < 0 )
+        {
+                 msg_Err( p_enc, "filling error on encode" );
+                 p_sys->frame->nb_samples = 0;
+        }
 
-        p_block->i_dts = p_block->i_pts = packet.pts;
+        p_aout_buf->p_buffer     += in_bytes;
+        p_aout_buf->i_buffer     -= in_bytes;
+        p_aout_buf->i_nb_samples -= p_sys->frame->nb_samples;
+        if( likely( p_sys->frame->pts != AV_NOPTS_VALUE) )
+            date_Increment( &p_sys->buffer_date, p_sys->frame->nb_samples );
 
-        block_ChainAppend( &p_chain, p_block );
+        p_block = encode_audio_buffer( p_enc, p_sys, p_sys->frame );
+        if( likely( p_block ) )
+            block_ChainAppend( &p_chain, p_block );
     }
-    if( i_samples_left < 0 )
-        msg_Err( p_enc, "I_data_left overflow");
 
     // We have leftover samples that don't fill frame_size, and libavcodec doesn't seem to like
     // that frame has more data than p_sys->i_frame_size most of the cases currently.
-    if( i_samples_left > 0 )
+    if( p_aout_buf->i_nb_samples > 0 )
     {
-        if( av_sample_fmt_is_planar( p_sys->p_context->sample_fmt ) )
-            aout_Deinterleave( p_sys->p_buffer, p_aout_buf->p_buffer+i_data_offset, i_samples_left, p_enc->fmt_in.audio.i_channels, p_enc->fmt_in.i_codec );
-        else
-            memcpy( p_sys->p_buffer, p_aout_buf->p_buffer+i_data_offset , i_samples_left*p_sys->i_sample_bytes*p_enc->fmt_in.audio.i_channels);
-        p_sys->i_samples_delay = i_samples_left;
+       memcpy( p_sys->p_buffer + buffer_delay, p_aout_buf->p_buffer,
+               p_aout_buf->i_nb_samples * p_sys->i_sample_bytes * p_sys->p_context->channels);
+       p_sys->i_samples_delay += p_aout_buf->i_nb_samples;
     }
 
     return p_chain;
@@ -1258,7 +1407,8 @@ void CloseEncoder( vlc_object_t *p_this )
     av_free( p_sys->p_context );
 
 
-    free( p_sys->p_buffer );
+    av_free( p_sys->p_interleave_buf );
+    av_free( p_sys->p_buffer );
 
     free( p_sys );
 }