1 files changed, 102 insertions, 20 deletions

diff --git a/media/ffvpx/libavcodec/decode.c b/media/ffvpx/libavcodec/decode.c
index 421a8f1a35..9a6c57b7b8 100644
--- a/media/ffvpx/libavcodec/decode.c
+++ b/media/ffvpx/libavcodec/decode.c
@@ -36,6 +36,7 @@
 #include "libavutil/imgutils.h"
 #include "libavutil/internal.h"
 #include "libavutil/intmath.h"
+#include "libavutil/opt.h"
 
 #include "avcodec.h"
 #include "bytestream.h"
@@ -181,7 +182,7 @@ static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
     return 0;
 }
 
-static int bsfs_init(AVCodecContext *avctx)
+int ff_decode_bsfs_init(AVCodecContext *avctx)
 {
     AVCodecInternal *avci = avctx->internal;
     DecodeFilterContext *s = &avci->filter;
@@ -195,27 +196,33 @@ static int bsfs_init(AVCodecContext *avctx)
     while (bsfs_str && *bsfs_str) {
         AVBSFContext **tmp;
         const AVBitStreamFilter *filter;
-        char *bsf;
+        char *bsf, *bsf_options_str, *bsf_name;
 
         bsf = av_get_token(&bsfs_str, ",");
         if (!bsf) {
             ret = AVERROR(ENOMEM);
             goto fail;
         }
+        bsf_name = av_strtok(bsf, "=", &bsf_options_str);
+        if (!bsf_name) {
+            av_freep(&bsf);
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
 
-        filter = av_bsf_get_by_name(bsf);
+        filter = av_bsf_get_by_name(bsf_name);
         if (!filter) {
             av_log(avctx, AV_LOG_ERROR, "A non-existing bitstream filter %s "
                    "requested by a decoder. This is a bug, please report it.\n",
-                   bsf);
-            ret = AVERROR_BUG;
+                   bsf_name);
             av_freep(&bsf);
+            ret = AVERROR_BUG;
             goto fail;
         }
-        av_freep(&bsf);
 
         tmp = av_realloc_array(s->bsfs, s->nb_bsfs + 1, sizeof(*s->bsfs));
         if (!tmp) {
+            av_freep(&bsf);
             ret = AVERROR(ENOMEM);
             goto fail;
         }
@@ -223,8 +230,10 @@ static int bsfs_init(AVCodecContext *avctx)
         s->nb_bsfs++;
 
         ret = av_bsf_alloc(filter, &s->bsfs[s->nb_bsfs - 1]);
-        if (ret < 0)
+        if (ret < 0) {
+            av_freep(&bsf);
             goto fail;
+        }
 
         if (s->nb_bsfs == 1) {
             /* We do not currently have an API for passing the input timebase into decoders,
@@ -238,12 +247,38 @@ static int bsfs_init(AVCodecContext *avctx)
             ret = avcodec_parameters_copy(s->bsfs[s->nb_bsfs - 1]->par_in,
                                           s->bsfs[s->nb_bsfs - 2]->par_out);
         }
-        if (ret < 0)
+        if (ret < 0) {
+            av_freep(&bsf);
             goto fail;
+        }
+
+        if (bsf_options_str && filter->priv_class) {
+            const AVOption *opt = av_opt_next(s->bsfs[s->nb_bsfs - 1]->priv_data, NULL);
+            const char * shorthand[2] = {NULL};
+
+            if (opt)
+                shorthand[0] = opt->name;
+
+            ret = av_opt_set_from_string(s->bsfs[s->nb_bsfs - 1]->priv_data, bsf_options_str, shorthand, "=", ":");
+            if (ret < 0) {
+                if (ret != AVERROR(ENOMEM)) {
+                    av_log(avctx, AV_LOG_ERROR, "Invalid options for bitstream filter %s "
+                           "requested by the decoder. This is a bug, please report it.\n",
+                           bsf_name);
+                    ret = AVERROR_BUG;
+                }
+                av_freep(&bsf);
+                goto fail;
+            }
+        }
+        av_freep(&bsf);
 
         ret = av_bsf_init(s->bsfs[s->nb_bsfs - 1]);
         if (ret < 0)
             goto fail;
+
+        if (*bsfs_str)
+            bsfs_str++;
     }
 
     return 0;
@@ -653,10 +688,6 @@ int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacke
     if (avpkt && !avpkt->size && avpkt->data)
         return AVERROR(EINVAL);
 
-    ret = bsfs_init(avctx);
-    if (ret < 0)
-        return ret;
-
     av_packet_unref(avci->buffer_pkt);
     if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
         ret = av_packet_ref(avci->buffer_pkt, avpkt);
@@ -709,17 +740,13 @@ static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
 {
     AVCodecInternal *avci = avctx->internal;
-    int ret;
+    int ret, changed;
 
     av_frame_unref(frame);
 
     if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
         return AVERROR(EINVAL);
 
-    ret = bsfs_init(avctx);
-    if (ret < 0)
-        return ret;
-
     if (avci->buffer_frame->buf[0]) {
         av_frame_move_ref(frame, avci->buffer_frame);
     } else {
@@ -738,6 +765,51 @@ int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *fr
 
     avctx->frame_number++;
 
+    if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) {
+
+        if (avctx->frame_number == 1) {
+            avci->initial_format = frame->format;
+            switch(avctx->codec_type) {
+            case AVMEDIA_TYPE_VIDEO:
+                avci->initial_width  = frame->width;
+                avci->initial_height = frame->height;
+                break;
+            case AVMEDIA_TYPE_AUDIO:
+                avci->initial_sample_rate = frame->sample_rate ? frame->sample_rate :
+                                                                 avctx->sample_rate;
+                avci->initial_channels       = frame->channels;
+                avci->initial_channel_layout = frame->channel_layout;
+                break;
+            }
+        }
+
+        if (avctx->frame_number > 1) {
+            changed = avci->initial_format != frame->format;
+
+           switch(avctx->codec_type) {
+            case AVMEDIA_TYPE_VIDEO:
+                changed |= avci->initial_width  != frame->width ||
+                           avci->initial_height != frame->height;
+                break;
+            case AVMEDIA_TYPE_AUDIO:
+                changed |= avci->initial_sample_rate    != frame->sample_rate ||
+                           avci->initial_sample_rate    != avctx->sample_rate ||
+                           avci->initial_channels       != frame->channels ||
+                           avci->initial_channel_layout != frame->channel_layout;
+                break;
+            }
+
+            if (changed) {
+                avci->changed_frames_dropped++;
+                av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64
+                                            " drop count: %d \n",
+                                            avctx->frame_number, frame->pts,
+                                            avci->changed_frames_dropped);
+                av_frame_unref(frame);
+                return AVERROR_INPUT_CHANGED;
+            }
+        }
+    }
     return 0;
 }
 
@@ -1351,6 +1423,7 @@ int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
         if (i == n) {
             av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
                    "%s not in possible list.\n", desc->name);
+            ret = AV_PIX_FMT_NONE;
             break;
         }
 
@@ -1469,7 +1542,7 @@ static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
         tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
                                          NULL, linesize);
         if (tmpsize < 0)
-            return -1;
+            return tmpsize;
 
         for (i = 0; i < 3 && data[i + 1]; i++)
             size[i] = data[i + 1] - data[i];
@@ -1837,7 +1910,8 @@ static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
     int ret;
 
     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
-        if ((ret = av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) {
+        if ((unsigned)avctx->width > INT_MAX - STRIDE_ALIGN ||
+            (ret = av_image_check_size2(FFALIGN(avctx->width, STRIDE_ALIGN), avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) {
             av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
             return AVERROR(EINVAL);
         }
@@ -1943,6 +2017,14 @@ int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
     return ret;
 }
 
+static void bsfs_flush(AVCodecContext *avctx)
+{
+    DecodeFilterContext *s = &avctx->internal->filter;
+
+    for (int i = 0; i < s->nb_bsfs; i++)
+        av_bsf_flush(s->bsfs[i]);
+}
+
 void avcodec_flush_buffers(AVCodecContext *avctx)
 {
     avctx->internal->draining      = 0;
@@ -1963,7 +2045,7 @@ void avcodec_flush_buffers(AVCodecContext *avctx)
     avctx->pts_correction_last_pts =
     avctx->pts_correction_last_dts = INT64_MIN;
 
-    ff_decode_bsfs_uninit(avctx);
+    bsfs_flush(avctx);
 
     if (!avctx->refcounted_frames)
         av_frame_unref(avctx->internal->to_free);