avconv: Generic device setup

Not yet enabled for any hwaccels.

avtools/Makefile

@@ -8,7 +8,8 @@ PROGS      += $(AVPROGS)
 AVBASENAMES = avconv avplay avprobe
 ALLAVPROGS  = $(AVBASENAMES:%=%$(EXESUF))
 
-OBJS-avconv                   += avtools/avconv_opt.o avtools/avconv_filter.o
+OBJS-avconv                   += avtools/avconv_opt.o avtools/avconv_filter.o \
+                                 avtools/avconv_hw.o
 OBJS-avconv-$(CONFIG_LIBMFX)  += avtools/avconv_qsv.o
 OBJS-avconv-$(CONFIG_VAAPI)   += avtools/avconv_vaapi.o
 OBJS-avconv-$(CONFIG_VDA)     += avtools/avconv_vda.o

avtools/avconv.c

@@ -1704,6 +1704,17 @@ static int init_input_stream(int ist_index, char *error, int error_len)
 
         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
+
+        ret = hw_device_setup_for_decode(ist);
+        if (ret < 0) {
+            char errbuf[128];
+            av_strerror(ret, errbuf, sizeof(errbuf));
+            snprintf(error, error_len, "Device setup failed for "
+                     "decoder on input stream #%d:%d : %s",
+                     ist->file_index, ist->st->index, errbuf);
+            return ret;
+        }
+
         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
             char errbuf[128];
             if (ret == AVERROR_EXPERIMENTAL)
@@ -2046,6 +2057,16 @@ static int init_output_stream(OutputStream *ost, char *error, int error_len)
             ost->enc_ctx->hw_frames_ctx = av_buffer_ref(ost->filter->filter->inputs[0]->hw_frames_ctx);
             if (!ost->enc_ctx->hw_frames_ctx)
                 return AVERROR(ENOMEM);
+        } else {
+            ret = hw_device_setup_for_encode(ost);
+            if (ret < 0) {
+                char errbuf[128];
+                av_strerror(ret, errbuf, sizeof(errbuf));
+                snprintf(error, error_len, "Device setup failed for "
+                         "encoder on output stream #%d:%d : %s",
+                     ost->file_index, ost->index, errbuf);
+                return ret;
+            }
         }
 
         if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
@@ -2795,6 +2816,7 @@ static int transcode(void)
     }
 
     av_buffer_unref(&hw_device_ctx);
+    hw_device_free_all();
 
     /* finished ! */
     ret = 0;

avtools/avconv.h

@@ -40,6 +40,7 @@
 #include "libavutil/avutil.h"
 #include "libavutil/dict.h"
 #include "libavutil/fifo.h"
+#include "libavutil/hwcontext.h"
 #include "libavutil/pixfmt.h"
 #include "libavutil/rational.h"
 
@@ -63,8 +64,15 @@ typedef struct HWAccel {
     int (*init)(AVCodecContext *s);
     enum HWAccelID id;
     enum AVPixelFormat pix_fmt;
+    enum AVHWDeviceType device_type;
 } HWAccel;
 
+typedef struct HWDevice {
+    char *name;
+    enum AVHWDeviceType type;
+    AVBufferRef *device_ref;
+} HWDevice;
+
 /* select an input stream for an output stream */
 typedef struct StreamMap {
     int disabled;           /* 1 is this mapping is disabled by a negative map */
@@ -510,4 +518,13 @@ int qsv_transcode_init(OutputStream *ost);
 int vaapi_decode_init(AVCodecContext *avctx);
 int vaapi_device_init(const char *device);
 
+HWDevice *hw_device_get_by_name(const char *name);
+int hw_device_init_from_string(const char *arg, HWDevice **dev);
+void hw_device_free_all(void);
+
+int hw_device_setup_for_decode(InputStream *ist);
+int hw_device_setup_for_encode(OutputStream *ost);
+
+int hwaccel_decode_init(AVCodecContext *avctx);
+
 #endif /* AVCONV_H */

avtools/avconv_opt.c

@@ -57,19 +57,24 @@
 
 const HWAccel hwaccels[] = {
 #if HAVE_VDPAU_X11
-    { "vdpau", vdpau_init, HWACCEL_VDPAU, AV_PIX_FMT_VDPAU },
+    { "vdpau", vdpau_init, HWACCEL_VDPAU, AV_PIX_FMT_VDPAU,
+      AV_HWDEVICE_TYPE_NONE },
 #endif
 #if HAVE_DXVA2_LIB
-    { "dxva2", dxva2_init, HWACCEL_DXVA2, AV_PIX_FMT_DXVA2_VLD },
+    { "dxva2", dxva2_init, HWACCEL_DXVA2, AV_PIX_FMT_DXVA2_VLD,
+      AV_HWDEVICE_TYPE_NONE },
 #endif
 #if CONFIG_VDA
-    { "vda",   vda_init,   HWACCEL_VDA,   AV_PIX_FMT_VDA },
+    { "vda",   vda_init,   HWACCEL_VDA,   AV_PIX_FMT_VDA,
+      AV_HWDEVICE_TYPE_NONE },
 #endif
 #if CONFIG_LIBMFX
-    { "qsv",   qsv_init,   HWACCEL_QSV,   AV_PIX_FMT_QSV },
+    { "qsv",   qsv_init,   HWACCEL_QSV,   AV_PIX_FMT_QSV,
+      AV_HWDEVICE_TYPE_NONE },
 #endif
 #if CONFIG_VAAPI
-    { "vaapi", vaapi_decode_init, HWACCEL_VAAPI, AV_PIX_FMT_VAAPI },
+    { "vaapi", vaapi_decode_init, HWACCEL_VAAPI, AV_PIX_FMT_VAAPI,
+      AV_HWDEVICE_TYPE_NONE },
 #endif
     { 0 },
 };
@@ -337,6 +342,21 @@ static int opt_vaapi_device(void *optctx, const char *opt, const char *arg)
 }
 #endif
 
+static int opt_init_hw_device(void *optctx, const char *opt, const char *arg)
+{
+    if (!strcmp(arg, "list")) {
+        enum AVHWDeviceType type = AV_HWDEVICE_TYPE_NONE;
+        printf("Supported hardware device types:\n");
+        while ((type = av_hwdevice_iterate_types(type)) !=
+               AV_HWDEVICE_TYPE_NONE)
+            printf("%s\n", av_hwdevice_get_type_name(type));
+        printf("\n");
+        exit_program(0);
+    } else {
+        return hw_device_init_from_string(arg, NULL);
+    }
+}
+
 /**
  * Parse a metadata specifier passed as 'arg' parameter.
  * @param arg  metadata string to parse
@@ -2741,5 +2761,8 @@ const OptionDef options[] = {
         "set VAAPI hardware device (DRM path or X11 display name)", "device" },
 #endif
 
+    { "init_hw_device", HAS_ARG | OPT_EXPERT, { .func_arg = opt_init_hw_device },
+        "initialise hardware device", "args" },
+
     { NULL, },
 };