X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Futils.c;h=bc1beee4626d339717d328c605b60bd564580447;hb=32c8359093d1ff4f45ed19518b449b3ac3769d27;hp=8cbd47b84d7bae15ce08f8717743af26b83c74bb;hpb=e3e317e0c015b164b6c2eb8913e393216d78de23;p=ffmpeg

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 8cbd47b84d7..bc1beee4626 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -32,6 +32,7 @@
 #include "libavutil/channel_layout.h"
 #include "libavutil/crc.h"
 #include "libavutil/frame.h"
+#include "libavutil/hwcontext.h"
 #include "libavutil/internal.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/pixdesc.h"
@@ -59,14 +60,14 @@ static void *avformat_mutex;
 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
 {
     void **p = ptr;
-    if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
+    if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
         av_freep(p);
         *size = 0;
         return;
     }
-    av_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
+    av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
     if (*size)
-        memset((uint8_t *)*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
+        memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
 }
 
 /* encoder management */
@@ -94,12 +95,12 @@ static av_cold void avcodec_init(void)
 
 int av_codec_is_encoder(const AVCodec *codec)
 {
-    return codec && (codec->encode_sub || codec->encode2);
+    return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
 }
 
 int av_codec_is_decoder(const AVCodec *codec)
 {
-    return codec && codec->decode;
+    return codec && (codec->decode || codec->send_packet);
 }
 
 av_cold void avcodec_register(AVCodec *codec)
@@ -147,7 +148,7 @@ int ff_set_sar(AVCodecContext *avctx, AVRational sar)
     int ret = av_image_check_sar(avctx->width, avctx->height, sar);
 
     if (ret < 0) {
-        av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
+        av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
                sar.num, sar.den);
         avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
         return ret;
@@ -199,6 +200,7 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
     case AV_PIX_FMT_YUV440P:
     case AV_PIX_FMT_YUV444P:
     case AV_PIX_FMT_GBRP:
+    case AV_PIX_FMT_GBRAP:
     case AV_PIX_FMT_GRAY8:
     case AV_PIX_FMT_GRAY16BE:
     case AV_PIX_FMT_GRAY16LE:
@@ -336,7 +338,8 @@ static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
 
     switch (avctx->codec_type) {
     case AVMEDIA_TYPE_VIDEO: {
-        AVPicture picture;
+        uint8_t *data[4];
+        int linesize[4];
         int size[4] = { 0 };
         int w = frame->width;
         int h = frame->height;
@@ -351,27 +354,27 @@ static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
         do {
             // NOTE: do not align linesizes individually, this breaks e.g. assumptions
             // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
-            av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
+            av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
             // increase alignment of w for next try (rhs gives the lowest bit set in w)
             w += w & ~(w - 1);
 
             unaligned = 0;
             for (i = 0; i < 4; i++)
-                unaligned |= picture.linesize[i] % pool->stride_align[i];
+                unaligned |= linesize[i] % pool->stride_align[i];
         } while (unaligned);
 
-        tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
-                                         NULL, picture.linesize);
+        tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
+                                         NULL, linesize);
         if (tmpsize < 0)
             return -1;
 
-        for (i = 0; i < 3 && picture.data[i + 1]; i++)
-            size[i] = picture.data[i + 1] - picture.data[i];
-        size[i] = tmpsize - (picture.data[i] - picture.data[0]);
+        for (i = 0; i < 3 && data[i + 1]; i++)
+            size[i] = data[i + 1] - data[i];
+        size[i] = tmpsize - (data[i] - data[0]);
 
         for (i = 0; i < 4; i++) {
             av_buffer_pool_uninit(&pool->pools[i]);
-            pool->linesize[i] = picture.linesize[i];
+            pool->linesize[i] = linesize[i];
             if (size[i]) {
                 pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
                 if (!pool->pools[i]) {
@@ -510,15 +513,12 @@ int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags
 {
     int ret;
 
+    if (avctx->hw_frames_ctx)
+        return av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
+
     if ((ret = update_frame_pool(avctx, frame)) < 0)
         return ret;
 
-#if FF_API_GET_BUFFER
-FF_DISABLE_DEPRECATION_WARNINGS
-    frame->type = FF_BUFFER_TYPE_INTERNAL;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
     switch (avctx->codec_type) {
     case AVMEDIA_TYPE_VIDEO:
         return video_get_buffer(avctx, frame);
@@ -529,34 +529,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
     }
 }
 
-#if FF_API_GET_BUFFER
-FF_DISABLE_DEPRECATION_WARNINGS
-int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
-{
-    return avcodec_default_get_buffer2(avctx, frame, 0);
-}
-
-typedef struct CompatReleaseBufPriv {
-    AVCodecContext avctx;
-    AVFrame frame;
-} CompatReleaseBufPriv;
-
-static void compat_free_buffer(void *opaque, uint8_t *data)
-{
-    CompatReleaseBufPriv *priv = opaque;
-    if (priv->avctx.release_buffer)
-        priv->avctx.release_buffer(&priv->avctx, &priv->frame);
-    av_freep(&priv);
-}
-
-static void compat_release_buffer(void *opaque, uint8_t *data)
-{
-    AVBufferRef *buf = opaque;
-    av_buffer_unref(&buf);
-}
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
 int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
 {
     AVPacket *pkt = avctx->internal->pkt;
@@ -568,6 +540,7 @@ int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
         { AV_PKT_DATA_REPLAYGAIN ,   AV_FRAME_DATA_REPLAYGAIN },
         { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
         { AV_PKT_DATA_STEREO3D,      AV_FRAME_DATA_STEREO3D },
+        { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
     };
 
     frame->color_primaries = avctx->color_primaries;
@@ -578,11 +551,21 @@ int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
 
     frame->reordered_opaque = avctx->reordered_opaque;
     if (!pkt) {
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
         frame->pkt_pts = AV_NOPTS_VALUE;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+        frame->pts     = AV_NOPTS_VALUE;
         return 0;
     }
 
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
     frame->pkt_pts = pkt->pts;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+    frame->pts     = pkt->pts;
 
     for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
         int size;
@@ -665,126 +648,13 @@ int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
     if (ret < 0)
         return ret;
 
-    if (hwaccel && hwaccel->alloc_frame) {
-        ret = hwaccel->alloc_frame(avctx, frame);
-        goto end;
-    }
-
-#if FF_API_GET_BUFFER
-FF_DISABLE_DEPRECATION_WARNINGS
-    /*
-     * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
-     * We wrap each plane in its own AVBuffer. Each of those has a reference to
-     * a dummy AVBuffer as its private data, unreffing it on free.
-     * When all the planes are freed, the dummy buffer's free callback calls
-     * release_buffer().
-     */
-    if (avctx->get_buffer) {
-        CompatReleaseBufPriv *priv = NULL;
-        AVBufferRef *dummy_buf = NULL;
-        int planes, i, ret;
-
-        if (flags & AV_GET_BUFFER_FLAG_REF)
-            frame->reference    = 1;
-
-        ret = avctx->get_buffer(avctx, frame);
-        if (ret < 0)
-            return ret;
-
-        /* return if the buffers are already set up
-         * this would happen e.g. when a custom get_buffer() calls
-         * avcodec_default_get_buffer
-         */
-        if (frame->buf[0])
-            return 0;
-
-        priv = av_mallocz(sizeof(*priv));
-        if (!priv) {
-            ret = AVERROR(ENOMEM);
-            goto fail;
+    if (hwaccel) {
+        if (hwaccel->alloc_frame) {
+            ret = hwaccel->alloc_frame(avctx, frame);
+            goto end;
         }
-        priv->avctx = *avctx;
-        priv->frame = *frame;
-
-        dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
-        if (!dummy_buf) {
-            ret = AVERROR(ENOMEM);
-            goto fail;
-        }
-
-#define WRAP_PLANE(ref_out, data, data_size)                            \
-do {                                                                    \
-    AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf);                  \
-    if (!dummy_ref) {                                                   \
-        ret = AVERROR(ENOMEM);                                          \
-        goto fail;                                                      \
-    }                                                                   \
-    ref_out = av_buffer_create(data, data_size, compat_release_buffer,  \
-                               dummy_ref, 0);                           \
-    if (!ref_out) {                                                     \
-        av_frame_unref(frame);                                          \
-        ret = AVERROR(ENOMEM);                                          \
-        goto fail;                                                      \
-    }                                                                   \
-} while (0)
-
-        if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
-            const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
-
-            planes = av_pix_fmt_count_planes(frame->format);
-            /* workaround for AVHWAccel plane count of 0, buf[0] is used as
-               check for allocated buffers: make libavcodec happy */
-            if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
-                planes = 1;
-            if (!desc || planes <= 0) {
-                ret = AVERROR(EINVAL);
-                goto fail;
-            }
-
-            for (i = 0; i < planes; i++) {
-                int v_shift    = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
-                int plane_size = (frame->height >> v_shift) * frame->linesize[i];
-
-                WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
-            }
-        } else {
-            int planar = av_sample_fmt_is_planar(frame->format);
-            planes = planar ? avctx->channels : 1;
-
-            if (planes > FF_ARRAY_ELEMS(frame->buf)) {
-                frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
-                frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
-                                                frame->nb_extended_buf);
-                if (!frame->extended_buf) {
-                    ret = AVERROR(ENOMEM);
-                    goto fail;
-                }
-            }
-
-            for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
-                WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
-
-            for (i = 0; i < frame->nb_extended_buf; i++)
-                WRAP_PLANE(frame->extended_buf[i],
-                           frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
-                           frame->linesize[0]);
-        }
-
-        av_buffer_unref(&dummy_buf);
-
-        frame->width  = avctx->width;
-        frame->height = avctx->height;
-
-        return 0;
-
-fail:
-        avctx->release_buffer(avctx, frame);
-        av_freep(&priv);
-        av_buffer_unref(&dummy_buf);
-        return ret;
-    }
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
+    } else
+        avctx->sw_pix_fmt = avctx->pix_fmt;
 
     ret = avctx->get_buffer2(avctx, frame, flags);
 
@@ -828,19 +698,6 @@ int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
     return 0;
 }
 
-#if FF_API_GET_BUFFER
-void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
-{
-    av_frame_unref(pic);
-}
-
-int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
-{
-    av_assert0(0);
-    return AVERROR_BUG;
-}
-#endif
-
 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
 {
     int i;
@@ -933,6 +790,10 @@ int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
     while (fmt[n] != AV_PIX_FMT_NONE)
         ++n;
 
+    av_assert0(n >= 1);
+    avctx->sw_pix_fmt = fmt[n - 1];
+    av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
+
     choices = av_malloc_array(n + 1, sizeof(*choices));
     if (!choices)
         return AV_PIX_FMT_NONE;
@@ -945,6 +806,8 @@ int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
         av_freep(&avctx->internal->hwaccel_priv_data);
         avctx->hwaccel = NULL;
 
+        av_buffer_unref(&avctx->hw_frames_ctx);
+
         ret = avctx->get_format(avctx, choices);
 
         desc = av_pix_fmt_desc_get(ret);
@@ -956,6 +819,16 @@ int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
             break;
 
+        if (avctx->hw_frames_ctx) {
+            AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
+            if (hw_frames_ctx->format != ret) {
+                av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() "
+                       "does not match the format of provided AVHWFramesContext\n");
+                ret = AV_PIX_FMT_NONE;
+                break;
+            }
+        }
+
         if (!setup_hwaccel(avctx, ret, desc->name))
             break;
 
@@ -972,41 +845,6 @@ int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
     return ret;
 }
 
-#if FF_API_AVFRAME_LAVC
-void avcodec_get_frame_defaults(AVFrame *frame)
-{
-    if (frame->extended_data != frame->data)
-        av_freep(&frame->extended_data);
-
-    memset(frame, 0, sizeof(AVFrame));
-
-    frame->pts                 = AV_NOPTS_VALUE;
-    frame->key_frame           = 1;
-    frame->sample_aspect_ratio = (AVRational) {0, 1 };
-    frame->format              = -1; /* unknown */
-    frame->extended_data       = frame->data;
-}
-
-AVFrame *avcodec_alloc_frame(void)
-{
-    AVFrame *frame = av_mallocz(sizeof(AVFrame));
-
-    if (!frame)
-        return NULL;
-
-FF_DISABLE_DEPRECATION_WARNINGS
-    avcodec_get_frame_defaults(frame);
-FF_ENABLE_DEPRECATION_WARNINGS
-
-    return frame;
-}
-
-void avcodec_free_frame(AVFrame **frame)
-{
-    av_frame_free(frame);
-}
-#endif
-
 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
 {
     int ret = 0;
@@ -1034,16 +872,21 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
         av_dict_copy(&tmp, *options, 0);
 
     /* If there is a user-supplied mutex locking routine, call it. */
-    if (lockmgr_cb) {
-        if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
-            return -1;
-    }
+    if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
+        if (lockmgr_cb) {
+            if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
+                return -1;
+        }
 
-    entangled_thread_counter++;
-    if (entangled_thread_counter != 1) {
-        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
-        ret = -1;
-        goto end;
+        entangled_thread_counter++;
+        if (entangled_thread_counter != 1) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "Insufficient thread locking. At least %d threads are "
+                   "calling avcodec_open2() at the same time right now.\n",
+                   entangled_thread_counter);
+            ret = -1;
+            goto end;
+        }
     }
 
     avctx->internal = av_mallocz(sizeof(AVCodecInternal));
@@ -1064,6 +907,18 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
         goto free_and_end;
     }
 
+    avctx->internal->buffer_frame = av_frame_alloc();
+    if (!avctx->internal->buffer_frame) {
+        ret = AVERROR(ENOMEM);
+        goto free_and_end;
+    }
+
+    avctx->internal->buffer_pkt = av_packet_alloc();
+    if (!avctx->internal->buffer_pkt) {
+        ret = AVERROR(ENOMEM);
+        goto free_and_end;
+    }
+
     if (codec->priv_data_size > 0) {
         if (!avctx->priv_data) {
             avctx->priv_data = av_mallocz(codec->priv_data_size);
@@ -1132,7 +987,7 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
     }
     avctx->frame_number = 0;
 
-    if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
+    if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
         avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
         ret = AVERROR_EXPERIMENTAL;
         goto free_and_end;
@@ -1150,11 +1005,27 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
             goto free_and_end;
         }
     }
-    if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
+    if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
         avctx->thread_count = 1;
 
     if (av_codec_is_encoder(avctx->codec)) {
         int i;
+#if FF_API_CODED_FRAME
+FF_DISABLE_DEPRECATION_WARNINGS
+        avctx->coded_frame = av_frame_alloc();
+        if (!avctx->coded_frame) {
+            ret = AVERROR(ENOMEM);
+            goto free_and_end;
+        }
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+        if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
+            av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
+            ret = AVERROR(EINVAL);
+            goto free_and_end;
+        }
+
         if (avctx->codec->sample_fmts) {
             for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
                 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
@@ -1223,6 +1094,26 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
 
         if (!avctx->rc_initial_buffer_occupancy)
             avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
+
+        if (avctx->ticks_per_frame &&
+            avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "ticks_per_frame %d too large for the timebase %d/%d.",
+                   avctx->ticks_per_frame,
+                   avctx->time_base.num,
+                   avctx->time_base.den);
+            goto free_and_end;
+        }
+
+        if (avctx->hw_frames_ctx) {
+            AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
+            if (frames_ctx->format != avctx->pix_fmt) {
+                av_log(avctx, AV_LOG_ERROR,
+                       "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
+                ret = AVERROR(EINVAL);
+                goto free_and_end;
+            }
+        }
     }
 
     if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
@@ -1261,12 +1152,15 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
 #endif
     }
 end:
-    entangled_thread_counter--;
+    if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) {
+        entangled_thread_counter--;
 
-    /* Release any user-supplied mutex. */
-    if (lockmgr_cb) {
-        (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
+        /* Release any user-supplied mutex. */
+        if (lockmgr_cb) {
+            (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
+        }
     }
+
     if (options) {
         av_dict_free(options);
         *options = tmp;
@@ -1274,6 +1168,20 @@ end:
 
     return ret;
 free_and_end:
+    if (avctx->codec &&
+        (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
+        avctx->codec->close(avctx);
+
+    if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
+        av_opt_free(avctx->priv_data);
+    av_opt_free(avctx);
+
+#if FF_API_CODED_FRAME
+FF_DISABLE_DEPRECATION_WARNINGS
+    av_frame_free(&avctx->coded_frame);
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
     av_dict_free(&tmp);
     av_freep(&avctx->priv_data);
     if (avctx->internal) {
@@ -1287,26 +1195,16 @@ free_and_end:
 
 int ff_alloc_packet(AVPacket *avpkt, int size)
 {
-    if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
+    if (size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
         return AVERROR(EINVAL);
 
     if (avpkt->data) {
         AVBufferRef *buf = avpkt->buf;
-#if FF_API_DESTRUCT_PACKET
-FF_DISABLE_DEPRECATION_WARNINGS
-        void *destruct = avpkt->destruct;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
 
         if (avpkt->size < size)
             return AVERROR(EINVAL);
 
         av_init_packet(avpkt);
-#if FF_API_DESTRUCT_PACKET
-FF_DISABLE_DEPRECATION_WARNINGS
-        avpkt->destruct = destruct;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
         avpkt->buf      = buf;
         avpkt->size     = size;
         return 0;
@@ -1366,8 +1264,13 @@ int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
 
     *got_packet_ptr = 0;
 
-    if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
-        av_free_packet(avpkt);
+    if (!avctx->codec->encode2) {
+        av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
+        return AVERROR(ENOSYS);
+    }
+
+    if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
+        av_packet_unref(avpkt);
         av_init_packet(avpkt);
         return 0;
     }
@@ -1388,12 +1291,19 @@ int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
         frame = &tmp;
     }
 
+    /* extract audio service type metadata */
+    if (frame) {
+        AVFrameSideData *sd = av_frame_get_side_data(frame, AV_FRAME_DATA_AUDIO_SERVICE_TYPE);
+        if (sd && sd->size >= sizeof(enum AVAudioServiceType))
+            avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
+    }
+
     /* check for valid frame size */
     if (frame) {
-        if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
+        if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) {
             if (frame->nb_samples > avctx->frame_size)
                 return AVERROR(EINVAL);
-        } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
+        } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
             if (frame->nb_samples < avctx->frame_size &&
                 !avctx->internal->last_audio_frame) {
                 ret = pad_last_frame(avctx, &padded_frame, frame);
@@ -1414,7 +1324,7 @@ int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
     ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
     if (!ret) {
         if (*got_packet_ptr) {
-            if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
+            if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
                 if (avpkt->pts == AV_NOPTS_VALUE)
                     avpkt->pts = frame->pts;
                 if (!avpkt->duration)
@@ -1436,7 +1346,7 @@ int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
     }
 
     if (ret < 0 || !*got_packet_ptr) {
-        av_free_packet(avpkt);
+        av_packet_unref(avpkt);
         av_init_packet(avpkt);
         goto end;
     }
@@ -1466,8 +1376,13 @@ int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
 
     *got_packet_ptr = 0;
 
-    if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
-        av_free_packet(avpkt);
+    if (!avctx->codec->encode2) {
+        av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
+        return AVERROR(ENOSYS);
+    }
+
+    if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
+        av_packet_unref(avpkt);
         av_init_packet(avpkt);
         avpkt->size = 0;
         return 0;
@@ -1482,7 +1397,7 @@ int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
     if (!ret) {
         if (!*got_packet_ptr)
             avpkt->size = 0;
-        else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
+        else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
             avpkt->pts = avpkt->dts = frame->pts;
 
         if (!user_packet && avpkt->size) {
@@ -1495,7 +1410,7 @@ int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
     }
 
     if (ret < 0 || !*got_packet_ptr)
-        av_free_packet(avpkt);
+        av_packet_unref(avpkt);
 
     emms_c();
     return ret;
@@ -1526,10 +1441,11 @@ static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
     if (!data)
         return 0;
 
-    if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
+    if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
         av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
                "changes, but PARAM_CHANGE side data was sent to it.\n");
-        return AVERROR(EINVAL);
+        ret = AVERROR(EINVAL);
+        goto fail2;
     }
 
     if (size < 4)
@@ -1564,13 +1480,20 @@ static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
         size -= 8;
         ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
         if (ret < 0)
-            return ret;
+            goto fail2;
     }
 
     return 0;
 fail:
     av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
-    return AVERROR_INVALIDDATA;
+    ret = AVERROR_INVALIDDATA;
+fail2:
+    if (ret < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
+        if (avctx->err_recognition & AV_EF_EXPLODE)
+            return ret;
+    }
+    return 0;
 }
 
 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
@@ -1629,26 +1552,30 @@ int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
     if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
         return -1;
 
+    if (!avctx->codec->decode) {
+        av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
+        return AVERROR(ENOSYS);
+    }
+
     avctx->internal->pkt = avpkt;
     ret = apply_param_change(avctx, avpkt);
-    if (ret < 0) {
-        av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
-        if (avctx->err_recognition & AV_EF_EXPLODE)
-            return ret;
-    }
+    if (ret < 0)
+        return ret;
 
     av_frame_unref(picture);
 
-    if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
+    if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
+        (avctx->active_thread_type & FF_THREAD_FRAME)) {
         if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
             ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
                                          avpkt);
         else {
             ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
                                        avpkt);
-            picture->pkt_dts = avpkt->dts;
+            if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
+                picture->pkt_dts = avpkt->dts;
             /* get_buffer is supposed to set frame parameters */
-            if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
+            if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
                 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
                 picture->width               = avctx->width;
                 picture->height              = avctx->height;
@@ -1689,6 +1616,11 @@ int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
 
     *got_frame_ptr = 0;
 
+    if (!avctx->codec->decode) {
+        av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
+        return AVERROR(ENOSYS);
+    }
+
     avctx->internal->pkt = avpkt;
 
     if (!avpkt->data && avpkt->size) {
@@ -1697,15 +1629,12 @@ int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
     }
 
     ret = apply_param_change(avctx, avpkt);
-    if (ret < 0) {
-        av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
-        if (avctx->err_recognition & AV_EF_EXPLODE)
-            return ret;
-    }
+    if (ret < 0)
+        return ret;
 
     av_frame_unref(frame);
 
-    if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
+    if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
         ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
         if (ret >= 0 && *got_frame_ptr) {
             avctx->frame_number++;
@@ -1745,10 +1674,10 @@ void avsubtitle_free(AVSubtitle *sub)
     int i;
 
     for (i = 0; i < sub->num_rects; i++) {
-        av_freep(&sub->rects[i]->pict.data[0]);
-        av_freep(&sub->rects[i]->pict.data[1]);
-        av_freep(&sub->rects[i]->pict.data[2]);
-        av_freep(&sub->rects[i]->pict.data[3]);
+        av_freep(&sub->rects[i]->data[0]);
+        av_freep(&sub->rects[i]->data[1]);
+        av_freep(&sub->rects[i]->data[2]);
+        av_freep(&sub->rects[i]->data[3]);
         av_freep(&sub->rects[i]->text);
         av_freep(&sub->rects[i]->ass);
         av_freep(&sub->rects[i]);
@@ -1759,17 +1688,257 @@ void avsubtitle_free(AVSubtitle *sub)
     memset(sub, 0, sizeof(AVSubtitle));
 }
 
+static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
+{
+    int got_frame;
+    int ret;
+
+    av_assert0(!avctx->internal->buffer_frame->buf[0]);
+
+    if (!pkt)
+        pkt = avctx->internal->buffer_pkt;
+
+    // This is the lesser evil. The field is for compatibility with legacy users
+    // of the legacy API, and users using the new API should not be forced to
+    // even know about this field.
+    avctx->refcounted_frames = 1;
+
+    // Some codecs (at least wma lossless) will crash when feeding drain packets
+    // after EOF was signaled.
+    if (avctx->internal->draining_done)
+        return AVERROR_EOF;
+
+    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+        ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
+                                    &got_frame, pkt);
+        if (ret >= 0)
+            ret = pkt->size;
+    } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
+        ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
+                                    &got_frame, pkt);
+    } else {
+        ret = AVERROR(EINVAL);
+    }
+
+    if (ret < 0)
+        return ret;
+
+    if (avctx->internal->draining && !got_frame)
+        avctx->internal->draining_done = 1;
+
+    if (ret >= pkt->size) {
+        av_packet_unref(avctx->internal->buffer_pkt);
+    } else {
+        int consumed = ret;
+
+        if (pkt != avctx->internal->buffer_pkt) {
+            av_packet_unref(avctx->internal->buffer_pkt);
+            if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
+                return ret;
+        }
+
+        avctx->internal->buffer_pkt->data += consumed;
+        avctx->internal->buffer_pkt->size -= consumed;
+        avctx->internal->buffer_pkt->pts   = AV_NOPTS_VALUE;
+        avctx->internal->buffer_pkt->dts   = AV_NOPTS_VALUE;
+    }
+
+    if (got_frame)
+        av_assert0(avctx->internal->buffer_frame->buf[0]);
+
+    return 0;
+}
+
+int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
+{
+    int ret;
+
+    if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
+        return AVERROR(EINVAL);
+
+    if (avctx->internal->draining)
+        return AVERROR_EOF;
+
+    if (!avpkt || !avpkt->size) {
+        avctx->internal->draining = 1;
+        avpkt = NULL;
+
+        if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
+            return 0;
+    }
+
+    if (avctx->codec->send_packet) {
+        if (avpkt) {
+            ret = apply_param_change(avctx, (AVPacket *)avpkt);
+            if (ret < 0)
+                return ret;
+        }
+        return avctx->codec->send_packet(avctx, avpkt);
+    }
+
+    // Emulation via old API. Assume avpkt is likely not refcounted, while
+    // decoder output is always refcounted, and avoid copying.
+
+    if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
+        return AVERROR(EAGAIN);
+
+    // The goal is decoding the first frame of the packet without using memcpy,
+    // because the common case is having only 1 frame per packet (especially
+    // with video, but audio too). In other cases, it can't be avoided, unless
+    // the user is feeding refcounted packets.
+    return do_decode(avctx, (AVPacket *)avpkt);
+}
+
+int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
+{
+    int ret;
+
+    av_frame_unref(frame);
+
+    if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
+        return AVERROR(EINVAL);
+
+    if (avctx->codec->receive_frame) {
+        if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
+            return AVERROR_EOF;
+        return avctx->codec->receive_frame(avctx, frame);
+    }
+
+    // Emulation via old API.
+
+    if (!avctx->internal->buffer_frame->buf[0]) {
+        if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
+            return AVERROR(EAGAIN);
+
+        while (1) {
+            if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
+                av_packet_unref(avctx->internal->buffer_pkt);
+                return ret;
+            }
+            // Some audio decoders may consume partial data without returning
+            // a frame (fate-wmapro-2ch). There is no way to make the caller
+            // call avcodec_receive_frame() again without returning a frame,
+            // so try to decode more in these cases.
+            if (avctx->internal->buffer_frame->buf[0] ||
+                !avctx->internal->buffer_pkt->size)
+                break;
+        }
+    }
+
+    if (!avctx->internal->buffer_frame->buf[0])
+        return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
+
+    av_frame_move_ref(frame, avctx->internal->buffer_frame);
+    return 0;
+}
+
+static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
+{
+    int ret;
+    *got_packet = 0;
+
+    av_packet_unref(avctx->internal->buffer_pkt);
+    avctx->internal->buffer_pkt_valid = 0;
+
+    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+        ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
+                                    frame, got_packet);
+    } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
+        ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
+                                    frame, got_packet);
+    } else {
+        ret = AVERROR(EINVAL);
+    }
+
+    if (ret >= 0 && *got_packet) {
+        // Encoders must always return ref-counted buffers.
+        // Side-data only packets have no data and can be not ref-counted.
+        av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
+        avctx->internal->buffer_pkt_valid = 1;
+        ret = 0;
+    } else {
+        av_packet_unref(avctx->internal->buffer_pkt);
+    }
+
+    return ret;
+}
+
+int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
+{
+    if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
+        return AVERROR(EINVAL);
+
+    if (avctx->internal->draining)
+        return AVERROR_EOF;
+
+    if (!frame) {
+        avctx->internal->draining = 1;
+
+        if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
+            return 0;
+    }
+
+    if (avctx->codec->send_frame)
+        return avctx->codec->send_frame(avctx, frame);
+
+    // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
+    // 1. if the AVFrame is not refcounted, the copying will be much more
+    //    expensive than copying the packet data
+    // 2. assume few users use non-refcounted AVPackets, so usually no copy is
+    //    needed
+
+    if (avctx->internal->buffer_pkt_valid)
+        return AVERROR(EAGAIN);
+
+    return do_encode(avctx, frame, &(int){0});
+}
+
+int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
+{
+    av_packet_unref(avpkt);
+
+    if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
+        return AVERROR(EINVAL);
+
+    if (avctx->codec->receive_packet) {
+        if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
+            return AVERROR_EOF;
+        return avctx->codec->receive_packet(avctx, avpkt);
+    }
+
+    // Emulation via old API.
+
+    if (!avctx->internal->buffer_pkt_valid) {
+        int got_packet;
+        int ret;
+        if (!avctx->internal->draining)
+            return AVERROR(EAGAIN);
+        ret = do_encode(avctx, NULL, &got_packet);
+        if (ret < 0)
+            return ret;
+        if (ret >= 0 && !got_packet)
+            return AVERROR_EOF;
+    }
+
+    av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
+    avctx->internal->buffer_pkt_valid = 0;
+    return 0;
+}
+
 av_cold int avcodec_close(AVCodecContext *avctx)
 {
+    int i;
+
     if (avcodec_is_open(avctx)) {
         FramePool *pool = avctx->internal->pool;
-        int i;
+
         if (HAVE_THREADS && avctx->internal->thread_ctx)
             ff_thread_free(avctx);
         if (avctx->codec && avctx->codec->close)
             avctx->codec->close(avctx);
-        avctx->coded_frame = NULL;
         av_frame_free(&avctx->internal->to_free);
+        av_frame_free(&avctx->internal->buffer_frame);
+        av_packet_free(&avctx->internal->buffer_pkt);
         for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
             av_buffer_pool_uninit(&pool->pools[i]);
         av_freep(&avctx->internal->pool);
@@ -1781,12 +1950,25 @@ av_cold int avcodec_close(AVCodecContext *avctx)
         av_freep(&avctx->internal);
     }
 
+    for (i = 0; i < avctx->nb_coded_side_data; i++)
+        av_freep(&avctx->coded_side_data[i].data);
+    av_freep(&avctx->coded_side_data);
+    avctx->nb_coded_side_data = 0;
+
+    av_buffer_unref(&avctx->hw_frames_ctx);
+
     if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
         av_opt_free(avctx->priv_data);
     av_opt_free(avctx);
     av_freep(&avctx->priv_data);
-    if (av_codec_is_encoder(avctx->codec))
+    if (av_codec_is_encoder(avctx->codec)) {
         av_freep(&avctx->extradata);
+#if FF_API_CODED_FRAME
+FF_DISABLE_DEPRECATION_WARNINGS
+        av_frame_free(&avctx->coded_frame);
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+    }
     avctx->codec = NULL;
     avctx->active_thread_type = 0;
 
@@ -1800,7 +1982,7 @@ static AVCodec *find_encdec(enum AVCodecID id, int encoder)
     while (p) {
         if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
             p->id == id) {
-            if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
+            if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
                 experimental = p;
             } else
                 return p;
@@ -1895,22 +2077,15 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
 {
     const char *codec_name;
     const char *profile = NULL;
-    const AVCodec *p;
     char buf1[32];
     int bitrate;
     int new_line = 0;
     AVRational display_aspect_ratio;
+    const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
 
-    if (enc->codec)
-        p = enc->codec;
-    else if (encode)
-        p = avcodec_find_encoder(enc->codec_id);
-    else
-        p = avcodec_find_decoder(enc->codec_id);
-
-    if (p) {
-        codec_name = p->name;
-        profile = av_get_profile_name(p, enc->profile);
+    if (desc) {
+        codec_name = desc->name;
+        profile = avcodec_profile_name(enc->codec_id, enc->profile);
     } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
         /* fake mpeg2 transport stream codec (currently not
          * registered) */
@@ -2034,10 +2209,10 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
         return;
     }
     if (encode) {
-        if (enc->flags & CODEC_FLAG_PASS1)
+        if (enc->flags & AV_CODEC_FLAG_PASS1)
             snprintf(buf + strlen(buf), buf_size - strlen(buf),
                      ", pass 1");
-        if (enc->flags & CODEC_FLAG_PASS2)
+        if (enc->flags & AV_CODEC_FLAG_PASS2)
             snprintf(buf + strlen(buf), buf_size - strlen(buf),
                      ", pass 2");
     }
@@ -2061,6 +2236,21 @@ const char *av_get_profile_name(const AVCodec *codec, int profile)
     return NULL;
 }
 
+const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
+{
+    const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
+    const AVProfile *p;
+
+    if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
+        return NULL;
+
+    for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
+        if (p->profile == profile)
+            return p->name;
+
+    return NULL;
+}
+
 unsigned avcodec_version(void)
 {
     return LIBAVCODEC_VERSION_INT;
@@ -2079,6 +2269,12 @@ const char *avcodec_license(void)
 
 void avcodec_flush_buffers(AVCodecContext *avctx)
 {
+    avctx->internal->draining      = 0;
+    avctx->internal->draining_done = 0;
+    av_frame_unref(avctx->internal->buffer_frame);
+    av_packet_unref(avctx->internal->buffer_pkt);
+    avctx->internal->buffer_pkt_valid = 0;
+
     if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
         ff_thread_flush(avctx);
     else if (avctx->codec->flush)
@@ -2105,6 +2301,7 @@ int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
     case AV_CODEC_ID_PCM_ZORK:
         return 8;
     case AV_CODEC_ID_PCM_S16BE:
+    case AV_CODEC_ID_PCM_S16BE_PLANAR:
     case AV_CODEC_ID_PCM_S16LE:
     case AV_CODEC_ID_PCM_S16LE_PLANAR:
     case AV_CODEC_ID_PCM_U16BE:
@@ -2151,21 +2348,15 @@ int av_get_bits_per_sample(enum AVCodecID codec_id)
     }
 }
 
-int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
+static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
+                                    uint32_t tag, int bits_per_coded_sample, int frame_bytes)
 {
-    int id, sr, ch, ba, tag, bps;
-
-    id  = avctx->codec_id;
-    sr  = avctx->sample_rate;
-    ch  = avctx->channels;
-    ba  = avctx->block_align;
-    tag = avctx->codec_tag;
-    bps = av_get_exact_bits_per_sample(avctx->codec_id);
+    int bps = av_get_exact_bits_per_sample(id);
 
     /* codecs with an exact constant bits per sample */
     if (bps > 0 && ch > 0 && frame_bytes > 0)
         return (frame_bytes * 8) / (bps * ch);
-    bps = avctx->bits_per_coded_sample;
+    bps = bits_per_coded_sample;
 
     /* codecs with a fixed packet duration */
     switch (id) {
@@ -2269,7 +2460,7 @@ int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
             if (ba > 0) {
                 /* calc from frame_bytes, channels, and block_align */
                 int blocks = frame_bytes / ba;
-                switch (avctx->codec_id) {
+                switch (id) {
                 case AV_CODEC_ID_ADPCM_IMA_WAV:
                     return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
                 case AV_CODEC_ID_ADPCM_IMA_DK3:
@@ -2283,7 +2474,7 @@ int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
 
             if (bps > 0) {
                 /* calc from frame_bytes, channels, and bits_per_coded_sample */
-                switch (avctx->codec_id) {
+                switch (id) {
                 case AV_CODEC_ID_PCM_DVD:
                     return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
                 case AV_CODEC_ID_PCM_BLURAY:
@@ -2298,6 +2489,22 @@ int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
     return 0;
 }
 
+int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
+{
+    return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
+                                    avctx->channels, avctx->block_align,
+                                    avctx->codec_tag, avctx->bits_per_coded_sample,
+                                    frame_bytes);
+}
+
+int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
+{
+    return get_audio_frame_duration(par->codec_id, par->sample_rate,
+                                    par->channels, par->block_align,
+                                    par->codec_tag, par->bits_per_coded_sample,
+                                    frame_bytes);
+}
+
 #if !HAVE_THREADS
 int ff_thread_init(AVCodecContext *s)
 {
@@ -2477,20 +2684,6 @@ void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
 
 #endif
 
-enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
-{
-    if (codec_id <= AV_CODEC_ID_NONE)
-        return AVMEDIA_TYPE_UNKNOWN;
-    else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
-        return AVMEDIA_TYPE_VIDEO;
-    else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
-        return AVMEDIA_TYPE_AUDIO;
-    else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
-        return AVMEDIA_TYPE_SUBTITLE;
-
-    return AVMEDIA_TYPE_UNKNOWN;
-}
-
 int avcodec_is_open(AVCodecContext *s)
 {
     return !!s->internal;
@@ -2528,3 +2721,195 @@ const uint8_t *avpriv_find_start_code(const uint8_t *restrict p,
 
     return p + 4;
 }
+
+AVCPBProperties *av_cpb_properties_alloc(size_t *size)
+{
+    AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
+    if (!props)
+        return NULL;
+
+    if (size)
+        *size = sizeof(*props);
+
+    props->vbv_delay = UINT64_MAX;
+
+    return props;
+}
+
+AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
+{
+    AVPacketSideData *tmp;
+    AVCPBProperties  *props;
+    size_t size;
+
+    props = av_cpb_properties_alloc(&size);
+    if (!props)
+        return NULL;
+
+    tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
+    if (!tmp) {
+        av_freep(&props);
+        return NULL;
+    }
+
+    avctx->coded_side_data = tmp;
+    avctx->nb_coded_side_data++;
+
+    avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
+    avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
+    avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
+
+    return props;
+}
+
+static void codec_parameters_reset(AVCodecParameters *par)
+{
+    av_freep(&par->extradata);
+
+    memset(par, 0, sizeof(*par));
+
+    par->codec_type          = AVMEDIA_TYPE_UNKNOWN;
+    par->codec_id            = AV_CODEC_ID_NONE;
+    par->format              = -1;
+    par->field_order         = AV_FIELD_UNKNOWN;
+    par->color_range         = AVCOL_RANGE_UNSPECIFIED;
+    par->color_primaries     = AVCOL_PRI_UNSPECIFIED;
+    par->color_trc           = AVCOL_TRC_UNSPECIFIED;
+    par->color_space         = AVCOL_SPC_UNSPECIFIED;
+    par->chroma_location     = AVCHROMA_LOC_UNSPECIFIED;
+    par->sample_aspect_ratio = (AVRational){ 0, 1 };
+}
+
+AVCodecParameters *avcodec_parameters_alloc(void)
+{
+    AVCodecParameters *par = av_mallocz(sizeof(*par));
+
+    if (!par)
+        return NULL;
+    codec_parameters_reset(par);
+    return par;
+}
+
+void avcodec_parameters_free(AVCodecParameters **ppar)
+{
+    AVCodecParameters *par = *ppar;
+
+    if (!par)
+        return;
+    codec_parameters_reset(par);
+
+    av_freep(ppar);
+}
+
+int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
+{
+    codec_parameters_reset(dst);
+    memcpy(dst, src, sizeof(*dst));
+
+    dst->extradata      = NULL;
+    dst->extradata_size = 0;
+    if (src->extradata) {
+        dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+        if (!dst->extradata)
+            return AVERROR(ENOMEM);
+        memcpy(dst->extradata, src->extradata, src->extradata_size);
+        dst->extradata_size = src->extradata_size;
+    }
+
+    return 0;
+}
+
+int avcodec_parameters_from_context(AVCodecParameters *par,
+                                    const AVCodecContext *codec)
+{
+    codec_parameters_reset(par);
+
+    par->codec_type = codec->codec_type;
+    par->codec_id   = codec->codec_id;
+    par->codec_tag  = codec->codec_tag;
+
+    par->bit_rate              = codec->bit_rate;
+    par->bits_per_coded_sample = codec->bits_per_coded_sample;
+    par->profile               = codec->profile;
+    par->level                 = codec->level;
+
+    switch (par->codec_type) {
+    case AVMEDIA_TYPE_VIDEO:
+        par->format              = codec->pix_fmt;
+        par->width               = codec->width;
+        par->height              = codec->height;
+        par->field_order         = codec->field_order;
+        par->color_range         = codec->color_range;
+        par->color_primaries     = codec->color_primaries;
+        par->color_trc           = codec->color_trc;
+        par->color_space         = codec->colorspace;
+        par->chroma_location     = codec->chroma_sample_location;
+        par->sample_aspect_ratio = codec->sample_aspect_ratio;
+        break;
+    case AVMEDIA_TYPE_AUDIO:
+        par->format          = codec->sample_fmt;
+        par->channel_layout  = codec->channel_layout;
+        par->channels        = codec->channels;
+        par->sample_rate     = codec->sample_rate;
+        par->block_align     = codec->block_align;
+        par->initial_padding = codec->initial_padding;
+        break;
+    }
+
+    if (codec->extradata) {
+        par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+        if (!par->extradata)
+            return AVERROR(ENOMEM);
+        memcpy(par->extradata, codec->extradata, codec->extradata_size);
+        par->extradata_size = codec->extradata_size;
+    }
+
+    return 0;
+}
+
+int avcodec_parameters_to_context(AVCodecContext *codec,
+                                  const AVCodecParameters *par)
+{
+    codec->codec_type = par->codec_type;
+    codec->codec_id   = par->codec_id;
+    codec->codec_tag  = par->codec_tag;
+
+    codec->bit_rate              = par->bit_rate;
+    codec->bits_per_coded_sample = par->bits_per_coded_sample;
+    codec->profile               = par->profile;
+    codec->level                 = par->level;
+
+    switch (par->codec_type) {
+    case AVMEDIA_TYPE_VIDEO:
+        codec->pix_fmt                = par->format;
+        codec->width                  = par->width;
+        codec->height                 = par->height;
+        codec->field_order            = par->field_order;
+        codec->color_range            = par->color_range;
+        codec->color_primaries        = par->color_primaries;
+        codec->color_trc              = par->color_trc;
+        codec->colorspace             = par->color_space;
+        codec->chroma_sample_location = par->chroma_location;
+        codec->sample_aspect_ratio    = par->sample_aspect_ratio;
+        break;
+    case AVMEDIA_TYPE_AUDIO:
+        codec->sample_fmt      = par->format;
+        codec->channel_layout  = par->channel_layout;
+        codec->channels        = par->channels;
+        codec->sample_rate     = par->sample_rate;
+        codec->block_align     = par->block_align;
+        codec->initial_padding = par->initial_padding;
+        break;
+    }
+
+    if (par->extradata) {
+        av_freep(&codec->extradata);
+        codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+        if (!codec->extradata)
+            return AVERROR(ENOMEM);
+        memcpy(codec->extradata, par->extradata, par->extradata_size);
+        codec->extradata_size = par->extradata_size;
+    }
+
+    return 0;
+}