X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Futils.c;h=a1443920e394dcf4a0349e7d31c2f67437f093cd;hb=e61f39849c2e2b7f492c17b42058242ed2fa4d57;hp=e078a11408399ebe4a3d099c55942de2e67f74fd;hpb=95a8a5aca60ce37d3abdf121a0285c2e317cf521;p=ffmpeg

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index e078a114083..a1443920e39 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -39,8 +39,9 @@
 #include "libavutil/samplefmt.h"
 #include "libavutil/dict.h"
 #include "avcodec.h"
-#include "dsputil.h"
 #include "libavutil/opt.h"
+#include "me_cmp.h"
+#include "mpegvideo.h"
 #include "thread.h"
 #include "internal.h"
 #include "bytestream.h"
@@ -55,18 +56,6 @@ static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
 static void *codec_mutex;
 static void *avformat_mutex;
 
-#if FF_API_FAST_MALLOC && CONFIG_SHARED && HAVE_SYMVER
-FF_SYMVER(void*, av_fast_realloc, (void *ptr, unsigned int *size, size_t min_size), "LIBAVCODEC_55")
-{
-    return av_fast_realloc(ptr, size, min_size);
-}
-
-FF_SYMVER(void, av_fast_malloc, (void *ptr, unsigned int *size, size_t min_size), "LIBAVCODEC_55")
-{
-    av_fast_malloc(ptr, size, min_size);
-}
-#endif
-
 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
 {
     void **p = ptr;
@@ -99,8 +88,8 @@ static av_cold void avcodec_init(void)
         return;
     initialized = 1;
 
-    if (CONFIG_DSPUTIL)
-        ff_dsputil_static_init();
+    if (CONFIG_ME_CMP)
+        ff_me_cmp_init_static();
 }
 
 int av_codec_is_encoder(const AVCodec *codec)
@@ -118,7 +107,7 @@ av_cold void avcodec_register(AVCodec *codec)
     AVCodec **p;
     avcodec_init();
     p = &first_avcodec;
-    while (*p != NULL)
+    while (*p)
         p = &(*p)->next;
     *p          = codec;
     codec->next = NULL;
@@ -127,10 +116,12 @@ av_cold void avcodec_register(AVCodec *codec)
         codec->init_static_data(codec);
 }
 
+#if FF_API_EMU_EDGE
 unsigned avcodec_get_edge_width(void)
 {
     return EDGE_WIDTH;
 }
+#endif
 
 #if FF_API_SET_DIMENSIONS
 void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
@@ -151,7 +142,42 @@ int ff_set_dimensions(AVCodecContext *s, int width, int height)
     return ret;
 }
 
-#if HAVE_NEON || ARCH_PPC || HAVE_MMX
+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: %d/%d\n",
+               sar.num, sar.den);
+        avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
+        return ret;
+    } else {
+        avctx->sample_aspect_ratio = sar;
+    }
+    return 0;
+}
+
+int ff_side_data_update_matrix_encoding(AVFrame *frame,
+                                        enum AVMatrixEncoding matrix_encoding)
+{
+    AVFrameSideData *side_data;
+    enum AVMatrixEncoding *data;
+
+    side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
+    if (!side_data)
+        side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
+                                           sizeof(enum AVMatrixEncoding));
+
+    if (!side_data)
+        return AVERROR(ENOMEM);
+
+    data  = (enum AVMatrixEncoding*)side_data->data;
+    *data = matrix_encoding;
+
+    return 0;
+}
+
+#if HAVE_SIMD_ALIGN_16
 #   define STRIDE_ALIGN 16
 #else
 #   define STRIDE_ALIGN 8
@@ -167,11 +193,13 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
     switch (s->pix_fmt) {
     case AV_PIX_FMT_YUV420P:
     case AV_PIX_FMT_YUYV422:
+    case AV_PIX_FMT_YVYU422:
     case AV_PIX_FMT_UYVY422:
     case AV_PIX_FMT_YUV422P:
     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:
@@ -190,10 +218,14 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
     case AV_PIX_FMT_YUV422P9BE:
     case AV_PIX_FMT_YUV422P10LE:
     case AV_PIX_FMT_YUV422P10BE:
+    case AV_PIX_FMT_YUVA422P10LE:
+    case AV_PIX_FMT_YUVA422P10BE:
     case AV_PIX_FMT_YUV444P9LE:
     case AV_PIX_FMT_YUV444P9BE:
     case AV_PIX_FMT_YUV444P10LE:
     case AV_PIX_FMT_YUV444P10BE:
+    case AV_PIX_FMT_YUVA444P10LE:
+    case AV_PIX_FMT_YUVA444P10BE:
     case AV_PIX_FMT_GBRP9LE:
     case AV_PIX_FMT_GBRP9BE:
     case AV_PIX_FMT_GBRP10LE:
@@ -317,11 +349,6 @@ static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
 
         avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
 
-        if (!(avctx->flags & CODEC_FLAG_EMU_EDGE)) {
-            w += EDGE_WIDTH * 2;
-            h += EDGE_WIDTH * 2;
-        }
-
         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
@@ -445,12 +472,9 @@ fail:
 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
 {
     FramePool *pool = s->internal->pool;
-    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
-    int pixel_size = desc->comp[0].step_minus1 + 1;
-    int h_chroma_shift, v_chroma_shift;
     int i;
 
-    if (pic->data[0] != NULL) {
+    if (pic->data[0]) {
         av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
         return -1;
     }
@@ -458,26 +482,14 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
     memset(pic->data, 0, sizeof(pic->data));
     pic->extended_data = pic->data;
 
-    av_pix_fmt_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
-
     for (i = 0; i < 4 && pool->pools[i]; i++) {
-        const int h_shift = i == 0 ? 0 : h_chroma_shift;
-        const int v_shift = i == 0 ? 0 : v_chroma_shift;
-
         pic->linesize[i] = pool->linesize[i];
 
         pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
         if (!pic->buf[i])
             goto fail;
 
-        // no edge if EDGE EMU or not planar YUV
-        if ((s->flags & CODEC_FLAG_EMU_EDGE) || !pool->pools[2])
-            pic->data[i] = pic->buf[i]->data;
-        else {
-            pic->data[i] = pic->buf[i]->data +
-                FFALIGN((pic->linesize[i] * EDGE_WIDTH >> v_shift) +
-                        (pixel_size * EDGE_WIDTH >> h_shift), pool->stride_align[i]);
-        }
+        pic->data[i] = pic->buf[i]->data;
     }
     for (; i < AV_NUM_DATA_POINTERS; i++) {
         pic->data[i] = NULL;
@@ -546,19 +558,77 @@ static void compat_release_buffer(void *opaque, uint8_t *data)
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif
 
+int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
+{
+    AVPacket *pkt = avctx->internal->pkt;
+    int i;
+    struct {
+        enum AVPacketSideDataType packet;
+        enum AVFrameSideDataType frame;
+    } sd[] = {
+        { 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;
+    frame->color_trc       = avctx->color_trc;
+    frame->colorspace      = avctx->colorspace;
+    frame->color_range     = avctx->color_range;
+    frame->chroma_location = avctx->chroma_sample_location;
+
+    frame->reordered_opaque = avctx->reordered_opaque;
+    if (!pkt) {
+        frame->pkt_pts = AV_NOPTS_VALUE;
+        return 0;
+    }
+
+    frame->pkt_pts = pkt->pts;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
+        int size;
+        uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
+        if (packet_sd) {
+            AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
+                                                               sd[i].frame,
+                                                               size);
+            if (!frame_sd)
+                return AVERROR(ENOMEM);
+
+            memcpy(frame_sd->data, packet_sd, size);
+        }
+    }
+
+    return 0;
+}
+
 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
 {
+    const AVHWAccel *hwaccel = avctx->hwaccel;
+    int override_dimensions = 1;
     int ret;
 
     switch (avctx->codec_type) {
     case AVMEDIA_TYPE_VIDEO:
-        frame->width  = FFMAX(avctx->width, avctx->coded_width);
-        frame->height = FFMAX(avctx->height, avctx->coded_height);
+        if (frame->width <= 0 || frame->height <= 0) {
+            frame->width  = FFMAX(avctx->width, avctx->coded_width);
+            frame->height = FFMAX(avctx->height, avctx->coded_height);
+            override_dimensions = 0;
+        }
         if (frame->format < 0)
             frame->format              = avctx->pix_fmt;
         if (!frame->sample_aspect_ratio.num)
             frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
 
+        if (av_image_check_sar(frame->width, frame->height,
+                               frame->sample_aspect_ratio) < 0) {
+            av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
+                   frame->sample_aspect_ratio.num,
+                   frame->sample_aspect_ratio.den);
+            frame->sample_aspect_ratio = (AVRational){ 0, 1 };
+        }
+
         if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
             return ret;
         break;
@@ -593,8 +663,17 @@ int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
     default: return AVERROR(EINVAL);
     }
 
-    frame->pkt_pts = avctx->internal->pkt ? avctx->internal->pkt->pts : AV_NOPTS_VALUE;
-    frame->reordered_opaque = avctx->reordered_opaque;
+    ret = ff_decode_frame_props(avctx, frame);
+    if (ret < 0)
+        return ret;
+
+    if (hwaccel) {
+        if (hwaccel->alloc_frame) {
+            ret = hwaccel->alloc_frame(avctx, frame);
+            goto end;
+        }
+    } else
+        avctx->sw_pix_fmt = avctx->pix_fmt;
 
 #if FF_API_GET_BUFFER
 FF_DISABLE_DEPRECATION_WARNINGS
@@ -648,6 +727,7 @@ do {                                                                    \
     ref_out = av_buffer_create(data, data_size, compat_release_buffer,  \
                                dummy_ref, 0);                           \
     if (!ref_out) {                                                     \
+        av_buffer_unref(&dummy_ref);                                    \
         av_frame_unref(frame);                                          \
         ret = AVERROR(ENOMEM);                                          \
         goto fail;                                                      \
@@ -714,7 +794,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
     ret = avctx->get_buffer2(avctx, frame, flags);
 
-    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+end:
+    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
         frame->width  = avctx->width;
         frame->height = avctx->height;
     }
@@ -724,7 +805,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
 int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
 {
-    AVFrame tmp;
+    AVFrame *tmp;
     int ret;
 
     av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
@@ -733,20 +814,22 @@ int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
         return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
 
     if (av_frame_is_writable(frame))
-        return 0;
+        return ff_decode_frame_props(avctx, frame);
+
+    tmp = av_frame_alloc();
+    if (!tmp)
+        return AVERROR(ENOMEM);
 
-    av_frame_move_ref(&tmp, frame);
+    av_frame_move_ref(tmp, frame);
 
     ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
     if (ret < 0) {
-        av_frame_unref(&tmp);
+        av_frame_free(&tmp);
         return ret;
     }
 
-    av_image_copy(frame->data, frame->linesize, tmp.data, tmp.linesize,
-                  frame->format, frame->width, frame->height);
-
-    av_frame_unref(&tmp);
+    av_frame_copy(frame, tmp);
+    av_frame_free(&tmp);
 
     return 0;
 }
@@ -801,6 +884,105 @@ enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const en
     return fmt[0];
 }
 
+static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
+                               enum AVPixelFormat pix_fmt)
+{
+    AVHWAccel *hwaccel = NULL;
+
+    while ((hwaccel = av_hwaccel_next(hwaccel)))
+        if (hwaccel->id == codec_id
+            && hwaccel->pix_fmt == pix_fmt)
+            return hwaccel;
+    return NULL;
+}
+
+static int setup_hwaccel(AVCodecContext *avctx,
+                         const enum AVPixelFormat fmt,
+                         const char *name)
+{
+    AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
+    int ret        = 0;
+
+    if (!hwa) {
+        av_log(avctx, AV_LOG_ERROR,
+               "Could not find an AVHWAccel for the pixel format: %s",
+               name);
+        return AVERROR(ENOENT);
+    }
+
+    if (hwa->priv_data_size) {
+        avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
+        if (!avctx->internal->hwaccel_priv_data)
+            return AVERROR(ENOMEM);
+    }
+
+    if (hwa->init) {
+        ret = hwa->init(avctx);
+        if (ret < 0) {
+            av_freep(&avctx->internal->hwaccel_priv_data);
+            return ret;
+        }
+    }
+
+    avctx->hwaccel = hwa;
+
+    return 0;
+}
+
+int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
+{
+    const AVPixFmtDescriptor *desc;
+    enum AVPixelFormat *choices;
+    enum AVPixelFormat ret;
+    unsigned n = 0;
+
+    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;
+
+    memcpy(choices, fmt, (n + 1) * sizeof(*choices));
+
+    for (;;) {
+        if (avctx->hwaccel && avctx->hwaccel->uninit)
+            avctx->hwaccel->uninit(avctx);
+        av_freep(&avctx->internal->hwaccel_priv_data);
+        avctx->hwaccel = NULL;
+
+        ret = avctx->get_format(avctx, choices);
+
+        desc = av_pix_fmt_desc_get(ret);
+        if (!desc) {
+            ret = AV_PIX_FMT_NONE;
+            break;
+        }
+
+        if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
+            break;
+
+        if (!setup_hwaccel(avctx, ret, desc->name))
+            break;
+
+        /* Remove failed hwaccel from choices */
+        for (n = 0; choices[n] != ret; n++)
+            av_assert0(choices[n] != AV_PIX_FMT_NONE);
+
+        do
+            choices[n] = choices[n + 1];
+        while (choices[n++] != AV_PIX_FMT_NONE);
+    }
+
+    av_freep(&choices);
+    return ret;
+}
+
+#if FF_API_AVFRAME_LAVC
 void avcodec_get_frame_defaults(AVFrame *frame)
 {
     if (frame->extended_data != frame->data)
@@ -815,15 +997,16 @@ void avcodec_get_frame_defaults(AVFrame *frame)
     frame->extended_data       = frame->data;
 }
 
-#if FF_API_AVFRAME_LAVC
 AVFrame *avcodec_alloc_frame(void)
 {
     AVFrame *frame = av_mallocz(sizeof(AVFrame));
 
-    if (frame == NULL)
+    if (!frame)
         return NULL;
 
+FF_DISABLE_DEPRECATION_WARNINGS
     avcodec_get_frame_defaults(frame);
+FF_ENABLE_DEPRECATION_WARNINGS
 
     return frame;
 }
@@ -867,8 +1050,12 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
     }
 
     entangled_thread_counter++;
-    if (entangled_thread_counter != 1) {
-        av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
+    if (entangled_thread_counter != 1 &&
+        !(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE)) {
+        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;
     }
@@ -925,6 +1112,16 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
         ff_set_dimensions(avctx, 0, 0);
     }
 
+    if (avctx->width > 0 && avctx->height > 0) {
+        if (av_image_check_sar(avctx->width, avctx->height,
+                               avctx->sample_aspect_ratio) < 0) {
+            av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
+                   avctx->sample_aspect_ratio.num,
+                   avctx->sample_aspect_ratio.den);
+            avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
+        }
+    }
+
     /* if the decoder init function was already called previously,
      * free the already allocated subtitle_header before overwriting it */
     if (av_codec_is_decoder(codec))
@@ -998,6 +1195,11 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
                 ret = AVERROR(EINVAL);
                 goto free_and_end;
             }
+            if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
+                avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
+                avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
+                avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
+                avctx->color_range = AVCOL_RANGE_JPEG;
         }
         if (avctx->codec->supported_samplerates) {
             for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
@@ -1044,6 +1246,11 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
         }
     }
 
+#if FF_API_AUDIOENC_DELAY
+    if (av_codec_is_encoder(avctx->codec))
+        avctx->delay = avctx->initial_padding;
+#endif
+
     if (av_codec_is_decoder(avctx->codec)) {
         /* validate channel layout from the decoder */
         if (avctx->channel_layout) {
@@ -1061,6 +1268,11 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
             ret = AVERROR(EINVAL);
             goto free_and_end;
         }
+
+#if FF_API_AVCTX_TIMEBASE
+        if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
+            avctx->time_base = av_inv_q(avctx->framerate);
+#endif
     }
 end:
     entangled_thread_counter--;
@@ -1076,10 +1288,20 @@ 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);
+
     av_dict_free(&tmp);
     av_freep(&avctx->priv_data);
-    if (avctx->internal)
+    if (avctx->internal) {
+        av_frame_free(&avctx->internal->to_free);
         av_freep(&avctx->internal->pool);
+    }
     av_freep(&avctx->internal);
     avctx->codec = NULL;
     goto end;
@@ -1188,6 +1410,13 @@ 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) {
@@ -1249,6 +1478,10 @@ int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
 end:
     av_frame_free(&padded_frame);
 
+#if FF_API_AUDIOENC_DELAY
+    avctx->delay = avctx->initial_padding;
+#endif
+
     return ret;
 }
 
@@ -1467,6 +1700,11 @@ int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
     } else
         ret = 0;
 
+#if FF_API_AVCTX_TIMEBASE
+    if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
+        avctx->time_base = av_inv_q(avctx->framerate);
+#endif
+
     return ret;
 }
 
@@ -1552,19 +1790,6 @@ void avsubtitle_free(AVSubtitle *sub)
 
 av_cold int avcodec_close(AVCodecContext *avctx)
 {
-    /* If there is a user-supplied mutex locking routine, call it. */
-    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");
-        entangled_thread_counter--;
-        return -1;
-    }
-
     if (avcodec_is_open(avctx)) {
         FramePool *pool = avctx->internal->pool;
         int i;
@@ -1577,6 +1802,11 @@ av_cold int avcodec_close(AVCodecContext *avctx)
         for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
             av_buffer_pool_uninit(&pool->pools[i]);
         av_freep(&avctx->internal->pool);
+
+        if (avctx->hwaccel && avctx->hwaccel->uninit)
+            avctx->hwaccel->uninit(avctx);
+        av_freep(&avctx->internal->hwaccel_priv_data);
+
         av_freep(&avctx->internal);
     }
 
@@ -1588,12 +1818,7 @@ av_cold int avcodec_close(AVCodecContext *avctx)
         av_freep(&avctx->extradata);
     avctx->codec = NULL;
     avctx->active_thread_type = 0;
-    entangled_thread_counter--;
 
-    /* Release any user-supplied mutex. */
-    if (lockmgr_cb) {
-        (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
-    }
     return 0;
 }
 
@@ -1702,6 +1927,7 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
     const AVCodec *p;
     char buf1[32];
     int bitrate;
+    int new_line = 0;
     AVRational display_aspect_ratio;
 
     if (enc->codec)
@@ -1718,8 +1944,6 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
         /* fake mpeg2 transport stream codec (currently not
          * registered) */
         codec_name = "mpeg2ts";
-    } else if (enc->codec_name[0] != '\0') {
-        codec_name = enc->codec_name;
     } else {
         /* output avi tags */
         char tag_buf[32];
@@ -1736,15 +1960,48 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
         if (profile)
             snprintf(buf + strlen(buf), buf_size - strlen(buf),
                      " (%s)", profile);
-        if (enc->pix_fmt != AV_PIX_FMT_NONE) {
+        if (enc->codec_tag) {
+            char tag_buf[32];
+            av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
             snprintf(buf + strlen(buf), buf_size - strlen(buf),
-                     ", %s",
+                     " [%s / 0x%04X]", tag_buf, enc->codec_tag);
+        }
+
+        av_strlcat(buf, "\n      ", buf_size);
+        snprintf(buf + strlen(buf), buf_size - strlen(buf),
+                 "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
                      av_get_pix_fmt_name(enc->pix_fmt));
+
+        if (enc->color_range != AVCOL_RANGE_UNSPECIFIED)
+            snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
+                     av_color_range_name(enc->color_range));
+        if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
+            enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
+            enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
+            new_line = 1;
+            snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s",
+                     av_color_space_name(enc->colorspace),
+                     av_color_primaries_name(enc->color_primaries),
+                     av_color_transfer_name(enc->color_trc));
         }
+        if (av_log_get_level() >= AV_LOG_DEBUG &&
+            enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED)
+            snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s",
+                     av_chroma_location_name(enc->chroma_sample_location));
+
         if (enc->width) {
+            av_strlcat(buf, new_line ? "\n      " : ", ", buf_size);
+
             snprintf(buf + strlen(buf), buf_size - strlen(buf),
-                     ", %dx%d",
+                     "%dx%d",
                      enc->width, enc->height);
+
+            if (av_log_get_level() >= AV_LOG_VERBOSE &&
+                (enc->width != enc->coded_width ||
+                 enc->height != enc->coded_height))
+                snprintf(buf + strlen(buf), buf_size - strlen(buf),
+                         " (%dx%d)", enc->coded_width, enc->coded_height);
+
             if (enc->sample_aspect_ratio.num) {
                 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
                           enc->width * enc->sample_aspect_ratio.num,
@@ -1774,11 +2031,18 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
         if (profile)
             snprintf(buf + strlen(buf), buf_size - strlen(buf),
                      " (%s)", profile);
+        if (enc->codec_tag) {
+            char tag_buf[32];
+            av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
+            snprintf(buf + strlen(buf), buf_size - strlen(buf),
+                     " [%s / 0x%04X]", tag_buf, enc->codec_tag);
+        }
+
+        av_strlcat(buf, "\n      ", buf_size);
         if (enc->sample_rate) {
             snprintf(buf + strlen(buf), buf_size - strlen(buf),
-                     ", %d Hz", enc->sample_rate);
+                     "%d Hz, ", enc->sample_rate);
         }
-        av_strlcat(buf, ", ", buf_size);
         av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
         if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
             snprintf(buf + strlen(buf), buf_size - strlen(buf),
@@ -1870,6 +2134,7 @@ 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:
@@ -2132,42 +2397,40 @@ void av_register_hwaccel(AVHWAccel *hwaccel)
     hwaccel->next = NULL;
 }
 
-AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
+AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
 {
     return hwaccel ? hwaccel->next : first_hwaccel;
 }
 
-AVHWAccel *ff_find_hwaccel(AVCodecContext *avctx)
-{
-    enum AVCodecID codec_id = avctx->codec->id;
-    enum AVPixelFormat pix_fmt = avctx->pix_fmt;
-
-    AVHWAccel *hwaccel = NULL;
-
-    while ((hwaccel = av_hwaccel_next(hwaccel)))
-        if (hwaccel->id == codec_id
-            && hwaccel->pix_fmt == pix_fmt)
-            return hwaccel;
-    return NULL;
-}
-
 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
 {
     if (lockmgr_cb) {
-        if (lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
-            return -1;
-        if (lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
-            return -1;
+        // There is no good way to rollback a failure to destroy the
+        // mutex, so we ignore failures.
+        lockmgr_cb(&codec_mutex,    AV_LOCK_DESTROY);
+        lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY);
+        lockmgr_cb     = NULL;
+        codec_mutex    = NULL;
+        avformat_mutex = NULL;
+    }
+
+    if (cb) {
+        void *new_codec_mutex    = NULL;
+        void *new_avformat_mutex = NULL;
+        int err;
+        if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
+            return err > 0 ? AVERROR_UNKNOWN : err;
+        }
+        if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
+            // Ignore failures to destroy the newly created mutex.
+            cb(&new_codec_mutex, AV_LOCK_DESTROY);
+            return err > 0 ? AVERROR_UNKNOWN : err;
+        }
+        lockmgr_cb     = cb;
+        codec_mutex    = new_codec_mutex;
+        avformat_mutex = new_avformat_mutex;
     }
 
-    lockmgr_cb = cb;
-
-    if (lockmgr_cb) {
-        if (lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
-            return -1;
-        if (lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
-            return -1;
-    }
     return 0;
 }
 
@@ -2226,7 +2489,8 @@ int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
 
 void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
 {
-    av_frame_unref(f->f);
+    if (f->f)
+        av_frame_unref(f->f);
 }
 
 void ff_thread_finish_setup(AVCodecContext *avctx)