2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
12 /* This is a simple program showing how to initialize the decoder in XMA mode */
17 #define VPX_CODEC_DISABLE_COMPAT 1
18 #include "vpx_config.h"
19 #include "vpx/vpx_decoder.h"
20 #include "vpx/vpx_integer.h"
21 #if CONFIG_VP8_DECODER
22 #include "vpx/vp8dx.h"
25 static char *exec_name;
26 static int verbose = 0;
31 const vpx_codec_iface_t *iface;
34 #if CONFIG_VP8_DECODER
35 {"vp8", &vpx_codec_vp8_dx_algo},
39 static void usage_exit(void)
43 printf("Usage: %s <options>\n\n"
45 "\t--codec <name>\tCodec to use (default=%s)\n"
46 "\t-h <height>\tHeight of the simulated video frame, in pixels\n"
47 "\t-w <width> \tWidth of the simulated video frame, in pixels\n"
48 "\t-v \tVerbose mode (show individual segment sizes)\n"
49 "\t--help \tShow this message\n"
51 "Included decoders:\n"
56 for (i = 0; i < sizeof(ifaces) / sizeof(ifaces[0]); i++)
57 printf(" %-6s - %s\n",
59 vpx_codec_iface_name(ifaces[i].iface));
64 static void usage_error(const char *fmt, ...)
73 void my_mem_dtor(vpx_codec_mmap_t *mmap)
76 printf("freeing segment %d\n", mmap->id);
81 int main(int argc, char **argv)
83 vpx_codec_ctx_t decoder;
84 vpx_codec_iface_t *iface = ifaces[0].iface;
85 vpx_codec_iter_t iter;
86 vpx_codec_dec_cfg_t cfg;
87 vpx_codec_err_t res = VPX_CODEC_OK;
88 unsigned int alloc_sz = 0;
95 for (i = 1; i < argc; i++)
97 if (!strcmp(argv[i], "--codec"))
105 for (j = 0; j < sizeof(ifaces) / sizeof(ifaces[0]); j++)
106 if (!strcmp(ifaces[j].name, argv[i]))
110 iface = ifaces[k].iface;
112 usage_error("Error: Unrecognized argument (%s) to --codec\n",
116 usage_error("Error: Option --codec requires argument.\n");
118 else if (!strcmp(argv[i], "-v"))
120 else if (!strcmp(argv[i], "-h"))
126 usage_error("Error: Option -h requires argument.\n");
127 else if (!strcmp(argv[i], "-w"))
133 usage_error("Error: Option -w requires argument.\n");
134 else if (!strcmp(argv[i], "--help"))
137 usage_error("Error: Unrecognized option %s\n\n", argv[i]);
141 printf("Using built-in defaults. For options, rerun with --help\n\n");
143 /* XMA mode is not supported on all decoders! */
144 if (!(vpx_codec_get_caps(iface) & VPX_CODEC_CAP_XMA))
146 printf("%s does not support XMA mode!\n", vpx_codec_iface_name(iface));
150 /* The codec knows how much memory to allocate based on the size of the
151 * encoded frames. This data can be parsed from the bitstream with
152 * vpx_codec_peek_stream_info() if a bitstream is available. Otherwise,
153 * a fixed size can be used that will be the upper limit on the frame
154 * size the decoder can decode.
159 /* Initialize the decoder in XMA mode. */
160 if (vpx_codec_dec_init(&decoder, iface, &cfg, VPX_CODEC_USE_XMA))
162 printf("Failed to initialize decoder in XMA mode: %s\n", vpx_codec_error(&decoder));
166 /* Iterate through the list of memory maps, allocating them with the
167 * requested alignment.
173 vpx_codec_mmap_t mmap;
176 res = vpx_codec_get_mem_map(&decoder, &mmap, &iter);
177 align = mmap.align ? mmap.align - 1 : 0;
182 printf("Allocating segment %u, size %lu, align %u %s\n",
183 mmap.id, mmap.sz, mmap.align,
184 mmap.flags & VPX_CODEC_MEM_ZERO ? "(ZEROED)" : "");
186 if (mmap.flags & VPX_CODEC_MEM_ZERO)
187 mmap.priv = calloc(1, mmap.sz + align);
189 mmap.priv = malloc(mmap.sz + align);
191 mmap.base = (void *)((((uintptr_t)mmap.priv) + align) & ~(uintptr_t)align);
192 mmap.dtor = my_mem_dtor;
193 alloc_sz += mmap.sz + align;
195 if (vpx_codec_set_mem_map(&decoder, &mmap, 1))
197 printf("Failed to set mmap: %s\n", vpx_codec_error(&decoder));
201 else if (res != VPX_CODEC_LIST_END)
203 printf("Failed to get mmap: %s\n", vpx_codec_error(&decoder));
207 while (res != VPX_CODEC_LIST_END);
209 printf("%s\n %d bytes external memory required for %dx%d.\n",
210 decoder.name, alloc_sz, cfg.w, cfg.h);
211 vpx_codec_destroy(&decoder);