[video_core, host1x] Revert problematic ffmpeg commits

- c4a26be180.
- 2fe728766e.

src/video_core/host1x/ffmpeg/ffmpeg.cpp

@@ -214,42 +214,48 @@ bool DecoderContext::OpenContext(const Decoder& decoder) {
 }
 
 bool DecoderContext::SendPacket(const Packet& packet) {
-	m_temp_frame = std::make_shared<Frame>();
-	
-    if (const int ret = avcodec_send_packet(m_codec_context, packet.GetPacket()); ret < 0) {
+    m_temp_frame = std::make_shared<Frame>();
+    m_got_frame = 0;
+
+    if (const int ret = avcodec_send_packet(m_codec_context, packet.GetPacket()); ret < 0 && ret != AVERROR_EOF) {
         LOG_ERROR(HW_GPU, "avcodec_send_packet error: {}", AVError(ret));
         return false;
     }
-	
+
     return true;
 }
 
 std::shared_ptr<Frame> DecoderContext::ReceiveFrame() {
-	auto ReceiveImpl = [&](AVFrame* frame) -> bool {
-		if (const int ret = avcodec_receive_frame(m_codec_context, frame); ret < 0) {
-			LOG_ERROR(HW_GPU, "avcodec_receive_frame error: {}", AVError(ret));
-			return false;
-		}
-		return true;
-	};
+    auto receive = [&](AVFrame* dst) -> bool {
+        if (const int ret = avcodec_receive_frame(m_codec_context, dst); ret < 0) {
+            LOG_ERROR(HW_GPU, "avcodec_receive_frame error: {}", AVError(ret));
+            return false;
+        }
+        return true;
+    };
 
-	std::shared_ptr<Frame> intermediate_frame = std::make_shared<Frame>();
-	if (!ReceiveImpl(intermediate_frame->GetFrame())) {
-		return {};
-	}
+    if (m_codec_context->hw_device_ctx) {
+        // If we have a hardware context, make a separate frame here to receive the
+        // hardware result before sending it to the output.
+        Frame intermediate_frame;
 
-	const auto desc = av_pix_fmt_desc_get(intermediate_frame->GetPixelFormat());
-	if (m_codec_context->hw_device_ctx && (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) {
-		m_temp_frame->SetFormat(PreferredGpuFormat);
-		if (int ret = av_hwframe_transfer_data(m_temp_frame->GetFrame(), intermediate_frame->GetFrame(), 0); ret < 0) {
-			LOG_ERROR(HW_GPU, "av_hwframe_transfer_data error: {}", AVError(ret));
-			return {};
+        if (!receive(intermediate_frame.GetFrame())) {
+            return {};
 		}
-	} else {
-		m_temp_frame = std::move(intermediate_frame);
-	}
+		
+		m_temp_frame->SetFormat(PreferredGpuFormat);
+        if (int ret = av_hwframe_transfer_data(m_temp_frame->GetFrame(), intermediate_frame.GetFrame(), 0); ret < 0) {
+            LOG_ERROR(HW_GPU, "av_hwframe_transfer_data error: {}", AVError(ret));
+            return {};
+        }
+    } else {
+        // Otherwise, decode the frame as normal.
+        if (!receive(m_temp_frame->GetFrame())) {
+            return {};
+        }
+    }
 
-	return std::move(m_temp_frame);
+    return std::move(m_temp_frame);
 }
 
 void DecodeApi::Reset() {

src/video_core/host1x/ffmpeg/ffmpeg.h

@@ -24,7 +24,6 @@ extern "C" {
 
 #include <libavcodec/avcodec.h>
 #include <libavutil/opt.h>
-#include <libavutil/pixdesc.h>
 #include <libavcodec/codec_internal.h>
 
 #if defined(__GNUC__) || defined(__clang__)
@@ -194,6 +193,7 @@ public:
 private:
     const Decoder& m_decoder;
     AVCodecContext* m_codec_context{};
+    s32 m_got_frame{};
     std::shared_ptr<Frame> m_temp_frame{};
     bool m_decode_order{};
 };